DSP Switcher™ Power Modules
88MG815/88MG816, 1A Rated Output Current
88MG830/88MG831, 2A Rated Output Current
Non Isolated, Step-Down Switching Regulator Module
with AnyVoltage™ Technology. Single and Dual Output
Voltage Versions
Preliminary Specifications, Patent Pending
Doc. No. MV-S101948-00, Rev. D
February 21, 2006
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88MG815/88MG816/88MG830/88MG831
Non Isolated, Step -Down Switching Regulator Module with AnyVoltage™ Technology.
Single and Dual Output Voltage Versions
Doc. No. MV-S101948-00 Rev. D Copyright@ 2005 Marvell
Page 2 Document Classification: Proprietary Information February 21, 2006, Preliminary
Document Status
Advance
Information This document contains design specifications for initial product development. S pecifications may change
without notice. Contact Marvell Field Application Engineers for more information.
Preliminary
Information This document contains preliminary data, and a revision of this document will be published at a later date.
Specifications may change without notice. Contact Marvell Field Application Engineers for more information.
Final
Information This document contains specifications on a product that is in final release. Specifications may change without
notice. Contact Marvell Field Applicatio n Engineers for more information.
Revision Code: Rev. D
Preliminary Technical Publication: 2.0
Non Isolated, Step-Down Switching Regulator Module with AnyVoltage™ Technology.
Single and Dual Output Voltage Versions
88MG815/88MG816/88MG830/88MG831
Copyright@ 2005 Marvell Doc. No. MV-S101948-00, Rev. D
February 21, 2006, Preliminary Document Classification: Proprietary Information Page 3
FEATURES/BENEFITS
•True lead- free "plug-n-play" solution
•No external components required - except a sin-
gle voltage programming resistor
•Tiny fo otprint, vertical and horizontal options
•Input voltage range: 3V to 5.5V
•Programmable output voltage: 0.72V to 3.63V
•2% output voltage tolerance
•1 MHz switching frequency
•95% efficiency—no heatsink required
•2.5V and 3.3V LDO Secondary Voltage Versions
•Ultra-fast transient respo nse
•Low output ripple and noise
•AnyVoltage™ Technology provides 64 output
selections and shortens design cycles
•Output voltage margining capability for easy sys-
tem testing and qual ification
•High reliability - lowest component count
•Works with any external capacitive load (low
ESR, high ESR)
•Built-in undervoltage lockout, thermal protection,
and current limit
•Control IC and passive kit components are avail-
able for high volume user
SIP Package
DIP Package (TBD)
SMT Package
Doc. No. MV-S100649-00, Rev A Copyright@ 2005 Marvell
Page 4 Document Classification: Proprietary Information February 21, 2006, Preliminary
88MG815/88MG816/88MG830/88MG831
Non Isolat ed, Step-Down Switching Regulator Module with AnyVoltage™ Technology.
Single and Dual Output Voltage Versions
OVERVIEW
The 88MG815/88MG816/88MG830/88MG831 is a
high-performance, non-isolated, DC-DC conv erter
module for point-of-load (POL) applications. It func-
tions as a synchronous step-down (buck) switching
regulator in a small form factor . The module includes a
proprietary Marvell® integrated re gulator device. The
switching frequency for the regulator is 1 MHz, and no
external components are required (except one voltage
programming resistor , see Section 2.1 "Output V oltage
- AnyVoltage™ Technology" on page 14).
Ultra-high conversion efficiency (typically 95%) allows
for the use of the 88MG815/88MG816/88MG830/
88MG831 without any heatsink. Additionally, the
88MG815/88MG816/88MG830/88MG831 includes an
innovative single resistor method1 to program the out-
put voltage. This voltage is defined by the user with an
external resistor.
The 88MG815/88MG816/88MG830/88MG831 oper-
ates from an input voltage range of 3V to 5.5V, making
the device well suited for portable applications. The
output voltage range is 0.72V to 3.63V, supporting
future devices down to 65 nm geometries.
Other key features include an internal current limit, an
undervoltage lockout, a thermal shutdown, and an
ambient temperature range of -40°C to 85°C
APPLICATIONS
•Point-of-load power su pplies
•Networking/Datacom systems
•Portable computing
•Workstation and Servers
•DSP power supplies
•LAN/WAN
•Enterprise Networks
•Industrial Controls
1. Patent Pending
Copyright@ 2005 Marvell Doc. No. MV-S101948-00, Rev. D
February 21, 2006, Preliminary Document Classification: Proprietary Information Page 5
DEVICE FEATURE DIFFERENCES
Table below summarizes the feature differences between 88MG815/88MG816/88MG830/88MG831.
PRODUCT SELECTOR TABLE
Features 88MG815z-x 88MG816-x 88MG830z-x 88MG831-x
Rated Output Current 1.0A 1.0A 2.0A 2.0A
Packages
("-x" package code
options
-S ->SIP
-D ->DIP
-T ->SMT)
•8-Pin SIP
•7-Pin DIP
•7-Pin SMT
•7-Pin SIP
•6-Pin DIP
•6-Pin SMT
•8-Pin SIP
•7-Pin DIP
•7-Pin SMT
•7-Pin SIP
•6-Pin DIP
•6-Pin SMT
LDO
"z" voltage option B = 3.3V
E = 2.5V No LDO B = 3.3V
E = 2.5V No LDO
Part
Number Description LDO
Output
Voltage
Rated
Output
Current1
1. The maximum continuous output current while maintaining output voltage regulation is determined by thermal con-
straints. Refer to the Output Current Temperature Derating Curves.
Package
88MG815B-S SIP Module: 1A Rated Output Switching Reg. with LDO 3.3V 1.0A 9-pin SIP
88MG815E-S SIP Module: 1A Rated Output Switching Reg. with LDO 2.5V 1.0A 9-pin SIP
88MG815B-D DIP Module: 1A Rated Output Switching Reg. with LDO 3.3V 1.0A 7-pin DIP
88MG815E-D DIP Module: 1A Rated Output Switching Reg. with LDO 2.5V 1.0A 7-pin DIP
88MG815B-T SMT Module: 1A Rated Out put Switching Reg. with L DO 3.3V 1.0A 7-pin SMT
88MG815E-T SMT Module: 1A Rated Out put Switching Reg. with L DO 2.5V 1.0A 7-pin SMT
88MG816-S SIP Module: 1A Rated Output Switching Reg. -- 1.0A 8-pin SIP
88MG816-D DIP Module: 1A Rated Output Swi tching Reg. -- 1.0A 6-pin DIP
88MG816-T SMT Module: 1A Rated Output Swi tching Reg. -- 1.0A 6-pin SMT
88MG830B-S SIP Module: 2A Rated Output Switching Reg. with LDO 3.3V 2.0A 9-pin SIP
88MG830E-S SIP Module: 2A Rated Output Switching Reg. with LDO 2.5V 2.0A 9-pin SIP
88MG830B-D DIP Module: 2A Rated Output Switching Reg. with LDO 3.3V 2.0A 7-pin DIP
88MG830E-D DIP Module: 2A Rated Output Switching Reg. with LDO 2.5V 2.0A 7-pin DIP
88MG830B-T SMT Module: 2A Rated Output Switching Reg. with LDO 3.3V 2.0A 7-pin SMT
88MG830E-T SMT Module: 2A Rated Output Switching Reg. with LDO 2.5V 2.0A 7-pin SMT
88MG831-S SIP Module: 2A Rated Output Switching Reg. -- 2.0A 8-pin SIP
88MG831-D DIP Module: 2A Rated Output Swi tching Reg. -- 2.0A 6-pin DIP
88MG831-T SMT Module: 2A Rated Output Swi tching Reg. -- 2.0A 6-pin SMT
88MG815/88MG816/88MG830/88MG831
Non Isolat ed, Step-Down Switching Regulator Module with AnyVoltage™ Technology.
Single and Dual Output Voltage Versions
Doc. No. MV -S101948-00, Rev. D Copyright © 2006 Marvell
Page 6 Document Classification: Proprietary Information February 21, 2006, Preliminary
Table of Contents
SECTION 1. SIGNAL DESCRIPTION................................................................. 10
1.1 Pin Diagram for 88MG815z & 88MG830z....................................................................10
1.2 Pin Diagram for 88MG816 & 88MG831........................................................................11
1.3 Pin Description.............................................................................................................12
1.4 Pin Assignment Table..................................................................................................13
SECTION 2. FUNCTIONAL DESCRIPTION......................................................... 14
2.1 Output Voltage - AnyVoltage™ Technology..............................................................14
2.2 Output Voltage Margining............................................................................................16
2.3 LDO Versions........ ................. ... ... ... .... ... ... ... ... ................. ... ... ... .... ... ... ... ... .... ................17
2.3.1 LDO Output Voltage.................... .......................................... ... ... .............. .. ... .............. ....17
2.4 Regulation and Start-up.... .... ... ... ... .... ... .......................................................................18
2.5 Digital Soft Start ...........................................................................................................18
2.6 Undervoltage Lockout (UVLO)....................................................................................19
2.7 Thermal Shutdown.......................................................................................................19
SECTION 3. ELECTRICAL SPECIFICATIONS..................................................... 20
3.1 Absolute Maximum Ratings .................... ................... .... ................... ... ... ....................20
3.2 Recommended Operating Conditions.......................................................................20
3.3 Electrical Characteristics.............................................................................................21
SECTION 4. FUNCTIONAL CHARACTERISTICS ................................................. 24
4.1 Startup Waveforms.......................................................................................................24
4.2 Load Transient Response Waveforms.......................................................................27
4.2.1 88MG830 Step-Down Regulator ...................................................................................... 27
4.2.2 LDO Regulator............ .............. ... .............. ... ... ............................ .. ............................ ....... 28
4.3 Switching Waveforms........... ... ... ... .... ... ... ... ... .... ................ ... ... .... ... ... ... ... .... ... ... ... .... ...29
4.4 Efficiency.......................................................................................................................30
4.5 Considerations for Bench Testing and Hot Plug Applications................................31
4.5.1 Hot Plug Solution......................... ............................ ... ............................ ... ....................... 31
Copyright © 2006 Marvell Doc. No. MV-S101948-00, Rev. D
February 21, 2006, Preliminary Document Classification: Proprietary Information Page 7
4.5.2 Hot Plug Protection for bench testing and Wall Wart Applications................................... 31
SECTION 5. MECHANICAL DRAWINGS ............................................................32
5.1 Mechanical Dimensions for 88MG815z & 88MG830z................................................32
5.2 Mechanical Dimensions for 88MG816 & 88MG831 ...................................................35
SECTION 6. ORDERING INFORMATION ............................................................38
6.1 Ordering Part Numbers and Package Markings .......................................................38
6.2 Sample Ordering Part Number ............... .... ... ... ... .... ... ................ ... ... .... ... ... ... .... ... ... ...39
6.3 Package Marking..........................................................................................................40
6.3.1 88MG815z Package Marking....... ... ...................................................................... ... ... ..... 40
Doc. No. MV-S101948-00 Rev. D Copyright@ 2005
Page 8 Document Classification: Proprietary Information February 21, 2006, Preliminary
88MG815/88MG816/88MG830/88MG831
Non Isolated, Step-Down Swi tching Regulator Module with AnyVoltage™ Technology.
Single and Dual Output Voltage Versions
List of Tables
Table 1: Any Voltage Programming Table for 5% Resistors ............................................................................. 14
Table 2: AnyVoltage™ Programming Table for 1% Resistors........................................................................... 15
Table 3: Absolute Maximum Ratings.................................................................................................................. 20
Table 4: Recommended Operating Conditions .................................................................................................. 20
Table 5: Electrical Characteristics...................................................................................................................... 21
Table 6: 88MG815/88MG816, 1A Rated Output Current Electrical Characteristics........................................... 22
Table 7: 88MG830/88MG831, 2A Rated Output Current Electrical Characteristics........................................... 22
Table 8: LDO Output Electrical Characteristics.................................................................................................. 23
Table 9: Ordering Part Numbers ........................................................................................................................ 39
Table 10: Marking Specification Table ................................................................................................................. 41
Copyright © 2006 Marvell Doc. No. MV-S101948-00 R ev. D
February 21, 2006, Preliminary Document Classification: Proprietary Information Page 9
List of Figures
Figure 1: 88MG815z & 88MG830z Package - Component View....................................................................... 10
Figure 2: Connection Block Con figuration Sample for 88MG815z & 88MG830z .............................................. 10
Figure 3: 88MG816 & 88MG831 Package - Component View............. ... .. ................. ................. ................. ..... 11
Figure 4: Connection Block Con figuration Sample for 88MG816 & 88MG831.................................................. 11
Figure 5: Output Voltage Margin ing for 88MG815z & 88MG830z..................................................................... 16
Figure 6: Output Voltage Margining for 88MG816 & 88MG831.........................................................................17
Figure 7: Output Voltage Window...................................................................................................................... 18
Figure 8: 88MG815z & 88MG830z SIP Series Mechanical Dimensions ........................................................... 32
Figure 9: 88MG815z & 88MG830z DIP Series Mechanical Dimensions........................................................... 33
Figure 10: 88MG815z & 88MG830z SMT Series Mechanical Dimension s ......................................................... 34
Figure 11: 88MG816 & 88MG831 SIP Series Mechanical Dimensions............................................................... 35
Figure 12: 88MG816 & 88MG831 DIP Series Mechanical Dimensions............................................................... 36
Figure 13: 88MG816 & 88MG831 SMT Series Mechanical Dimensions.............. ............................................... 37
Figure 14: 88MG815z & 88MG830z Part Number............................................................................................... 38
Figure 15: 88MG816 & 88MG831 Part Number .................................................................................................. 38
Figure 16: 88MG815z Package Marking ............................................................................................................. 40
88MG815/88MG816/88MG830/88MG831
Non Isolated, Step-Down Switching Regulator Module with AnyV olt age™ T echnology .
Single and Dual Output Voltage Versions
Doc. No. MV -S101948-00, Rev. D Copyright © 2006 Marvell
Page 10 Document Classification: Proprietary Information February 21, 2006, Preliminary
Section 1. Signal Description
1.1 Pin Diagram for 88MG815z & 88MG830z
Figure 1: 88MG815z & 88MG830z Package - Component View
Figure 2: Connection Block Configuration Sample for 88MG815z & 88MG830z
5
6
7
VOUT GND VIN
VSETPSET
SHDN
LDO_OUT
1234
z-D88MG815z-
88MG830 D
z-T
88MG815 -zT
88MG830
88MG815z-S
88MG830z-S
PSET
GND
VSET
VIN
SHDN
GND
176543289
TLDO_OU
VOUT
MISSING PIN
ponltOi a
z
z-
88MG
88 815
830MG S-S
3V-5.5V
LDO_OUT
VOUT
VSET
TPSE
NGD
Load
GND
VIN
SHDN
Copyright © 2006 Marvell Doc. No. MV-S101948-00, Rev. D
February 21, 2006, Preliminary Document Classification: Proprietary Information Page 11
Signal Description
Pin Diagram for 88MG816 & 88MG831
1.2 Pin Diagram for 88MG816 & 88MG831
Figure 3: 88MG816 & 88MG831 Package - Component View
Figure 4: Connection Block Configuration Sample for 88MG816 & 88MG831
VOUT VIN
GND
VSET
PSET
SHDN
654
123
88MG816-D
88MG831-D
88MG816-T
88MG831-T
VOUT
GND
VIN
SHDN
GND
VSET
PSET
17654328
88MG816-S
88MG831-S
MISSING PIN
O
P
Optional
Load
SET
GND
VSET
VUT
MISSIN G PIN
GND
VIN
SHDN
3V-5.5V
88MG
88MG816-S
831-S
88MG815/88MG816/88MG830/88MG831
Non Isolated, Step-Down Switching Regulator Module with AnyV olt age™ T echnology .
Single and Dual Output Voltage Versions
Doc. No. MV -S101948-00, Rev. D Copyright © 2006 Marvell
Page 12 Document Classification: Proprietary Information February 21, 2006, Preliminary
1.3 Pin Description
Name Pin Description
LDO_OUT1
1. This pin is present in 88MG815z & 88MG830z only.
Secondary Output Voltage. Connect directly to load with a short wide PCB trace.
PSET Percent Set.
An external resistor is connected to the ground to trim the set voltage by the percentage
value. See Table 1 in the Section 2.1 "Output Voltage - AnyVoltage™ Technology" on
page 14 for resistor values and percentage options.
A resistor with tolerance bet ter than 5% ca n be used . Th e total capacitance between thi s
pin and GND should be less than 25 pF. Shorting this pin to ground, floating this pin, or
using RPSET > 619K or RPSET < 7.68K does not affect the set voltage . If this pin is not
used, it should be tied to GND.
GND Power ground.
Connect all GND pins to a suitable low-impedance ground plane.
NC Not connected.
No pin.
VSET Voltage set.
An external resistor is connected to ground to set the output voltage of the switching reg-
ulator. See Table 1 in the Section 2.1 "Output Voltage - AnyVoltage™ Technology" on
page 14 for resistor values and output voltage options.
A resistor with tolerance better than 5% can be used. The total capacitance across this
pin and GND should be less than 25 pF. Shorting this pin to ground, floating this pin, or
using RVSET > 619K or RVSET < 7.68K disables the switching regulator.
VOUT Switch Output Voltage. Connect directly to load with a short wide PCB trace.
LDO_OUT LDO Output voltage.
Connect directly to load with a wide, low impedance PCB trace.
VIN 3V - 5.5V Input voltage.
SHDN Shutdown.
Logic low (≤ 0.8V) enables the regulator. Logic high (≥ 2.0V) disables the regulator. The
high signal has to be at least 20 µs long to disable the regulator.
Copyright © 2006 Marvell Doc. No. MV-S101948-00, Rev. D
February 21, 2006, Preliminary Document Classification: Proprietary Information Page 13
Signal Description
Pin Assignment Table
1.4 Pin Assignment Table
Name 88MG815z-S
88MG830z-S 88MG815z-D/T
88MG830z-D/T 88MG816-S
88MG831-S 88MG816-D/T
88MG831-D/T
LDO_OUT 1 1 - -
PSET 2 6 1 5
GND 3,7 3 2,6 2
MISSING PIN 4 - 3 -
VSET 5 5 4 4
VOUT6251
VIN 8 4 7 3
SHDN9786
88MG815/88MG816/88MG830/88MG831
Non Isolated, Step-Down Switching Regulator Module with AnyVoltage™ Technology.
Single and Dual Output Voltage Versions
Doc. No. MV -S101948-00, Rev. D Copyright © 2006 Marvell
Page 14 Document Classification: Proprietary Information February 21, 2006, Preliminary
Section 2. Functional Description
2.1 Output Voltage - AnyVoltage™ Technology
The output voltage of the 88MG815/88MG816/88MG830/88MG831 Series is programmed by using the look-up
Table 1 or Table 2 to select the resistor value for the VSET and PSET pins. The VSET pin sets the output voltage,
and the PSET pin trims the set voltage to a percentage value.
For example, Using Table 1 to program 2.25V output, a 165K resistor is selected for the VSET pin, and an 11K
resistor is selected for the PSET pin. The 160K resistor sets the output voltage to 2.5V and the 11K resistor trims
the set voltage off by 10% (or -10%). Using a resistor value greater than 619K or less than 7.68K for the VSET pin
disables the switching regulator and sets the SW pin to high impedance. Using a resistor value greater than 619K
or less than 7.68K for the PSET pin does not affect the set voltage. If not used, the PSET pin should be tied to
ground. Using the VSET resistor 's value greater than 619 kohm or less than 7.68 kohm disables the step-down
switching regulator and sets the SW pin to high impedance. if the VSET resistor's value is outside the 5% toler-
ance, the output can be either higher or lower than the set voltage.
Using resistor value greater than 619 kohm or less than 7.68 kohm for the PSET pin does not affect the set volt-
age. When the PSET pin is not used, it must be connected to ground. Like the VSER resistor, the percent value
can be either higher or lower if the PSER resistor's value is outside the 5% tolerance.
Table 1: Any Voltage Programming Table for 5% Resistors
PSET
-10.0% –7.5% –5.0% –2.5% 0% 2.5% 5.0% 7.5% 10.0%
11k 18k 30k 51k GND 100k 160k 270k 470k
VSET
11k 0.720 0.740 0.760 0.780 0.800 0.820 0.840 0.860 0.880
18k 0.900 0.925 0.950 0.975 1.000 1.025 1.050 1.075 1.100
30k 1.080 1.110 1.140 1.170 1.200 1.230 1.260 1.290 1.320
51k 1.350 1.388 1.425 1.463 1.500 1.538 1.575 1.613 1.650
100k 1.620 1.665 1.710 1.755 1.800 1.845 1.890 1.935 1.980
160k 2.250 2.313 2.375 2.438 2.500 2.563 2.625 2.688 2.750
270k 2.700 2.775 2.850 2.925 3.000 3.075 3.150 3.225 3.300
470k 2.970 3.053 3.135 3.218 3.300 3.383 3.465 3.548 3.630
Copyright © 2006 Marvell Doc. No. MV-S101948-00, Rev. D
February 21, 2006, Preliminary Document Classification: Proprietary Information Page 15
Functional Description
Output Voltage - AnyVoltage™ Technology
The VSET and PSET resistor are read once during start-up before the output voltage is turned on. Af ter the output
voltage is turned on, the VSET and PSET resisters are ignored.This ascertains that the output voltage tolerance is
not dependant upon the tolerance or thermal characteristics of these resistors.
Table 2: AnyVoltage™ Programming Table for 1% Resistors
PSET
-10.0% –7.5% –5.0% –2.5% 2.5% 5.0% 7.5% 10.0%
11k 18.7k 31.6k 53.6k Open
/GND 97.6k 165k 280k 475k
VSET
GND 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
11k 0.720 0.740 0.760 0.780 0.800 0.820 0.840 0.860 0.880
18.7k 0.900 0.925 0.950 0.975 1.000 1.025 1.050 1.075 1.100
31.6k 1.080 1.110 1.140 1.170 1.200 1.230 1.260 1.290 1.320
53.6k 1.350 1.388 1.425 1.463 1.500 1.538 1.575 1.613 1.650
97.6k 1.620 1.665 1.710 1.755 1.800 1.845 1.890 1.935 1.980
165k 2.250 2.313 2.375 2.438 2.500 2.563 2.625 2.688 2.750
280k 2.700 2.775 2.850 2.925 3.000 3.075 3.150 3.225 3.300
475k 2.970 3.053 3.135 3.218 3.300 3.383 3.465 3.548 3.630
Open 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
88MG815/88MG816/88MG830/88MG831
Non Isolated, Step-Down Switching Regulator Module with AnyVoltage™ Technology.
Single and Dual Output Voltage Versions
Doc. No. MV -S101948-00, Rev. D Copyright © 2006 Marvell
Page 16 Document Classification: Proprietary Information February 21, 2006, Preliminary
2.2 Output Voltage Margining
A useful application of the Marvell® AnyVoltage™ technology is “output voltage margining”. Voltage margining is
commonly used during system qualification to evaluate operation at “corner” conditions of voltage, temperature
etc. T ypically, output voltage will be offset up and down by some percentage (margin) of the nominal value. For the
88MG815/88MG816/88MG830/88MG831 Series the VSET pin/resistor controls the nominal voltage of the switch-
ing regulator output while the PSET pin/resistor controls the margin voltage. As can be seen in Table 1, the PSET
pin allows the margin to be set as high as 10% above and as low as -10% below the nominal setpoint established
by VSET. Depending on the value of the PSET resistor intermediate point s of ±7.5%, ±5% and ±2.5% can also be
accessed.
For example, if an application calls for a nominal output voltage of 1.5V then Table 1 prescribes a value of R1 for
the VSET resistor . This selection is shown in Figure 6 connected to the VSET pin. To of fset the voltage above and
below the nominal value, the PSET pin can be used with resistor values again from Table 1. Additionally, switches
S1 and S2 can be alternately closed to select from the two resistors - R3 and R2 (offset values) for PSET. If more
offsets are required more switches and resistors may be used. As shown in the figures below, if S1 is closed and
S2 opened a positive 5% offset would be added to the nominal 1.5V output yielding 1.575V. Conversely, if S1 is
opened and S2 closed the output would be offset to -5% from 1.5V, or 1.425V. Finally with both S1 and S2 opened
the output would return to the nominal 1.5V. Thus voltage margining can be simply and reliably implemented with
a minimum of components and design effort.
Figure 5: Output Voltage Margining for 88MG815z & 88MG830z
88MG815z
88MG830z
LDO_OUT
Load2
GND
VIN
SHDN
GND
3.0V-5.5V
VSET
PSET
Load1
BUCK_OUT
R1
R2
S1S2
R3
Copyright © 2006 Marvell Doc. No. MV-S101948-00, Rev. D
February 21, 2006, Preliminary Document Classification: Proprietary Information Page 17
Functional Description
LDO Versions
2.3 L DO Versions
The 88MG815z and 88MG830z versions have a second output voltage regulated as a Low Dropout Linear regula-
tor. This is identified by the LDO_OUT output. The LDO controller is part of the Marvell® power IC on the module.
The linear pass element is a small P-Channel MOSFET.
The LDO output is enabled immedia te ly after the SHDN pin is pulled low.
2.3.1 LDO Output Voltage
The fixed output voltage of the LDO is either 3.3V or 2.5V, depending upon the selected version of the module.The
“z” in the part number determines this. If z = B, then LDO_OUT = 3.3V, if z = E then LDO_OUT = 2.5V.
The LDO is short-circuit protected to a current of approximately 1A. The output current rating of the LDO is 450
mA continuous over the Industrial Temperature range. It is thermally limited because of the limited copper area
available on the module for heat dissipation. The module can deliver peak currents of 800 mA for very brief times,
such as 1 ms without damage.
Figure 6: Output Voltage Margining for 88MG816 & 88MG831
88MG816
88MG831
VOUT
Load
GND
VIN
SHDN
GND
3V-5.5V
VSET
PSET
R1
R2
S1S2
R3
88MG815/88MG816/88MG830/88MG831
Non Isolated, Step-Down Switching Regulator Module with AnyVoltage™ Technology.
Single and Dual Output Voltage Versions
Doc. No. MV -S101948-00, Rev. D Copyright © 2006 Marvell
Page 18 Document Classification: Proprietary Information February 21, 2006, Preliminary
2.4 Regulation and Start-up
The step-down switching regulator uses Pulse Width Modulation (PWM) And Pulse Frequency Modulation (PFM)
modes to regulate the output voltage using digital control. The mode of operation depends on the level of output
current and the output voltage.
In steady states, the step-down switching regulator monitors the current flowing through the inductor to determine
if the regulator is handling heavy or light load applications. For heavy load applications, the step-down regulator
operates in the PWM mode (B and C) to minimize the ripple current for optimum efficiency and to minimize the rip-
ple output voltage. The step-down regulator operates in the PFM and Discontinu ous Conduction Mode (DCM) (A
and D) to limit the switching action for optimum efficiency in light load applications. In this mode, the average out-
put voltage is slightly higher than the average output voltage for heavy transient load applications.
Figure 7: Output Voltage Window
2.5 Digital Soft Start
During start-up, the 88MG815/88MG816, 1A Rated Output Current provides a soft start function. Soft start
reduces surge currents from input voltage and provides a well-controlled output voltage rise characteristics. The
rate of the output voltage start-up is limited by the value of the output capacitor and the internal current limit cir-
cuitry. This combination forces the output voltage to come up slowly, providing a soft-start characteristic.
During soft start, the 88MG815/88MG816, 1A Rated Output Current feeds a constant current to the output capac-
itor in several steps. Figure 4 of the MVPG15x/16 datasheet shows th e inductor current waveform during startup.
The current limit is ramped up in 7 steps beginning at approximately 40% of the current limit rating and en ding at
100% at 25 µs per step. The buck regulator behaves like a current source during this time as the output ramps up
slowly.
Typical Vout
PFM Mode
PWM Moed
PFM Mode
A
B
D
C
Copyright © 2006 Marvell Doc. No. MV-S101948-00, Rev. D
February 21, 2006, Preliminary Document Classification: Proprietary Information Page 19
Functional Description
Undervoltage Lockout (UVLO)
2.6 Undervoltage Lockout (UVLO)
The 88MG815/88MG816/88MG830/88MG831 Series incorporates undervoltage-lockout circuitry to disable the
step-down regulator when the input voltage is below 2.75V (typical). The step-down regulator is enabled when the
input voltage is above 2.85V (typical).
2.7 Thermal Shutdown
If the junction temperature of the Control IC on 88MG815/88MG816/88MG830/88MG831 Series exceeds 150°C
(typical), the thermal shutdown circuitry disables the step-down regulator. The step-down regulator is enabled
when the jun c ti o n temperature fa ll s to 12 0°C (typ i cal ).
88MG815/88MG816/88MG830/88MG831
Non Isolated, Step-Down Switching Regulator Module with AnyVoltage™ Technology.
Single and Dual Output Voltage Versions
Doc. No. MV -S101948-00, Rev. D Copyright © 2006 Marvell
Page 20 Document Classification: Proprietary Information February 21, 2006, Preliminary
Section 3. Electrical Specifications
3.1 Absolute Maximum Ratings
3.2 Recommended Operating Conditions
Table 3: Absolute Maximum Ratings
Stresses above those listed in Absolute Maximum Ratings may cause permanent device failure. Functionality at or above those limits is not
implied. Exposure to absolute maximum ratings fo r extended periods may affect device reliability.
Parameter Symbol Range Units
Input Voltage to GND VIN -0.3 to 6.0 V
Voltage Set to GND VSET -0.6 to (VIN + 0.3) V
Percentage Set Voltage to GND VPSET -0.6 to (VIN + 0.3) V
Shutdown Voltage to GND VSHDN -0.6 to (VIN + 0.3) V
Storage Temperature Range TSTOR -65 to +150 °C
Output Current (Peak Switch Current) for 88MG815z &
88MG816 IPEAK 1.5 A
Output Current (Peak Switch Current) for 88MG830z &
88MG831 IPEAK 3.0 A
Rated Output Current for 88MG815z & 88MG816 IOUT 1A
Rated Output Current for 88MG830z & 88MG831 IOUT 2A
LDO Current IOUTLDO 450 mA
Table 4: Recommended Operating Conditions1
1. This device is not guaranteed to function outside the specified operating range.
Parameter Symbol Range Units
Input Volt age VIN 3 to 5.5 V
Operating Temperature Range2
2. This device is guaranteed to meet the specifications from 0°C to 70°C. Any specifications that per-
tains to the operating temperature range -40°C to +8 5°C are assured by design, characterization,
and correlation with statistical process controls.
TOP -40 to +85 °C
Copyright © 2006 Marvell Doc. No. MV-S101948-00, Rev. D
February 21, 2006, Preliminary Document Classification: Proprietary Information Page 21
Electrical Specifications
Electrical Characteristics
3.3 Electrical Characteristics
Table 5: Electrical Characteristics
The following applies unless otherwise noted: VIN = 5.0V. TA = 25°C. Bold values indicate –40°C ≤ TA ≤ 85°C.
Parameter Symbol Condition Min Typ Max Units
Input Voltage Range VIN 3.0 5.5 V
Tot al Quiescent Cu rrent (No
Load) IIN 1.3 mA
Shutdown Supply Current IIN VSHDN = VIN = 5.5V 1 10 µA
Undervolta ge Lockout VUVLO High thre shold, VIN
increasing 2.85 3.00 V
Low threshol d , VIN
decreasing 2.65 2.75 V
Shutdown Input Voltage
Logic VSHDN Enable regulator 0.8 V
Disable regulator 2.0 V
Shutdown Input Current ISHDN VSHDN = GND or 5.5V ±1 µA
Over-Temperature The rmal
Shutdown TOTS TJ increasing (disable
regulator) 150 °C
TJ decreasing (enable
regulator) 120 °C
Switching
Frequency fSW 1MHz
Electrical Material Rating
Flammabil it y Rati ng UL94V-0
Material Type TBD
88MG815/88MG816/88MG830/88MG831
Non Isolated, Step-Down Switching Regulator Module with AnyVoltage™ Technology.
Single and Dual Output Voltage Versions
Doc. No. MV -S101948-00, Rev. D Copyright © 2006 Marvell
Page 22 Document Classification: Proprietary Information February 21, 2006, Preliminary
Tab le 6: 88MG815/88MG816, 1A Rated Output Current Electrical Characteristics
Parameter Symbol Condition Min Typ Max Units
Line Regulation IOUT = 1A 0.2 %
VIN = 3.0V to 5.5V
Load Regulation IOUT = 0.2A to 2.0A 0.5 %
Line Regulati on LDO IOUT = 800 mA
VIN = 4.0V to 5.5V 0.2 %
Load Regulation LDO IOUT = 10 mA to 800 mA 0.5 %
Input Current Ripple IIN ripple VOUT = 0.8V
IOUT = 1A
(without external filter)
15 mA
pk-pk
Input Voltage Ripple VIN ripple 50 mV
pk-pk
Output Voltage Accuracy ±2 %
Output Voltage Noise IOUT = 2.0A
VOUT = 1.8V 8.0 mV
RMS
Tab le 7: 88MG830/88MG831, 2A Rated Output Current Electrical Characteristics
Parameter Symbol Condition Min Typ Max Units
Line Regulation IOUT = 2A 0.2 %
VIN = 3.0V to 5.5V
Load Regulation IOUT = 0.2A to 2.0A 0.5 %
Line Regulati on LDO IOUT = 800 mA
VIN = 4.0V to 5.5V 0.2 %
Load Regulation LDO IOUT = 10 mA to 800 mA 0.5 %
Input Current Ripple IIN ripple VOUT = 0.8V
IOUT = 2A
(without external filter)
15 mA
pk-pk
Input Voltage Ripple VIN ripple 50 mV
pk-pk
Output Voltage Accuracy ±2 %
Output Voltage Noise IOUT = 2.0A
VOUT = 1.8V 8.0 mV
RMS
Copyright © 2006 Marvell Doc. No. MV-S101948-00, Rev. D
February 21, 2006, Preliminary Document Classification: Proprietary Information Page 23
Electrical Specifications
Electrical Characteristics
Table 8: L D O Output Electrical Characteristics
Parameter Symbol Condition Min Typ Max Units
Line Regulat io n IOUT = 1A 0.2 %
VIN = 3.0V to 5.5V
Load Regulation IOUT = 0.25A to 1.0A 0.5 %
Output Voltage Accuracy ±2 %
88MG815/88MG816/88MG830/88MG831
Non Isolated, Step-Down Sw i tch in g Regu lator Module with AnyVoltage™ Technology.
Single and Dual Output Voltage Versions
Doc. No. MV-S101948-00 Rev. D Copyright © 2006 Marvell
Page 24 Document Classification: Proprietary Information February 21, 2006, Preliminary
Section 4. Functional Characteristics
4.1 Startup Waveforms
NOTE: There is a delay (3.5 ms typ) before the output voltage turns on. The actual threshold is before delay.
VLDO
VBUCK
VSHDN
Start-up Using the Shutdown Pin
2V/DIV
500mV/DIV
2V/DIV
VLDO
VBUCK
VSHDN
Turn Off Using the Shutdown Pin
2V/DIV
500mV/DIV
2V/DIV
1 ms/DIV 1 ms/DIV
VIN = 5.0V tDLY ~ 3.5 ms VIN = 5.0V
VLDO = 3.3V VLDO = 3.3V
VBUCK = 1.2V VBUCK = 1.2V
ILOAD = No Load ILOAD = No Load
VLDO
VBUCK
VSHDN
Enable Threshold at VIN = 3.0V
2V/DIV
1V/DIV
1V/DIV
VLDO
VBUCK
VSHDN
Enable Thresh old at VIN = 5.0V
2V/DIV
1V/DIV
1V/DIV
100 ms/DIV 100 ms/DIV
VIN = 5.0V VTH = 0.7V (Note) VIN = 5.0V VTH = 0.9V (Note)
VLDO = 3.3V VLDO = 3.3V
VBUCK = 1.2V VBUCK = 1.2V
ILOAD = 10 mA ILOAD = 10 mA
Functional Characteristics
S tar tup Waveforms
Copyright © 2006 Marvell Doc. No. MV-S101948-00 R ev. D
February 21, 2006, Preliminary Document Classification: Proprietary Information Page 25
NOTE: Graph shows the full range of Soft Start Current Limit. This test was conducted under an output overload condi-
tion and the output voltage is not in regulation. Realistically, this condition would result in thermal shutdown in a
short time.
VIN
VLDO
VBUCK
VIN Soft Start
5V/DIV
2V/DIV
1V/DIV
VIN
VLDO
VBUCK
VIN Hot Plug
5V/DIV
2V/DIV
1V/DIV
2 ms/DIV 1 ms/DIV
VIN = 5.0V VIN = 5.0V
VLDO = 3.3V VLDO = 3.3V
VBUCK = 1.2V VBUCK = 1.2V
ILOAD = No Load ILOAD = No Load
VOUT
IIND
88MG830 Step-down Output Rise Time
500mV/DIV
1A/DIV
IIND
88MG830 Soft Start Current Limit (See Note)
1A/DIV
5 μs/DIV 50 μs/DIV
VIN = 5.0V VIN = 5.0V
VOUT= 1.2V VOUT = 3.3V
ILOAD = 500 mA
_
88MG815/88MG816/88MG830/88MG831
Non Isolated, Step-Down Sw i tch in g Regu lator Module with AnyVoltage™ Technology.
Single and Dual Output Voltage Versions
Doc. No. MV-S101948-00 Rev. D Copyright © 2006 Marvell
Page 26 Document Classification: Proprietary Information February 21, 2006, Preliminary
VIN
VLDO
VBUCK
UVLO Thresholds
2V/DIV
2V/DIV
2V/DIV
10 ms/DIV
VIN = 5.0V VHTH = 2.966V
VLDO = 3.3V VLTH = 2.767V
VBUCK = 1.2V
ILOAD = 10 mA
Functional Characteristics
Load Transient Response Waveforms
Copyright © 2006 Marvell Doc. No. MV-S101948-00 R ev. D
February 21, 2006, Preliminary Document Classification: Proprietary Information Page 27
4.2 Load Transient Response Waveforms
4.2.1 88MG830 Step-Down Regulator
VBUCK
ILOAD
Load Transie nt Response
100mV/DIV
2A/DIV
VBUCK
ILOAD
Double-Pulsed Lo ad Response
100mV/DIV
2A/DIV
20 μs/DIV 20 μs/DIV
VIN = 5.0V ILOAD = 0.2A to 2A VIN = 5.0V ILOAD = 0.2A to 2A
VBUCK = 1.2V tRISE = 6A/μsV
BUCK = 1.2V tRISE = 6A/μs
COUT = 22 μFt
FALL = 129A/μsC
OUT = 22 μFt
FALL = 129A/μs
VBUCK
ILOAD
Load Transient Response (Additional
Output Capacitance)
100mV/DIV
2A/DIV
VBUCK
ILOAD
Double-Pulsed Lo ad Response
100mV/DIV
2A/DIV
20 μs/DIV 20 μs/DIV
VIN = 5.0V ILOAD = 0.2A to 2A VIN = 5.0V ILOAD = 0.2A to 2A
VBUCK = 1.2V tRISE ~ 6A/μSV
BUCK = 1. 2V tRISE ~ 6A/μS
Additional COUT = 22 μFt
FALL ~ 129A/μS Additional COUT = 22 μFt
FALL ~ 129A/μS
88MG815/88MG816/88MG830/88MG831
Non Isolated, Step-Down Sw i tch in g Regu lator Module with AnyVoltage™ Technology.
Single and Dual Output Voltage Versions
Doc. No. MV-S101948-00 Rev. D Copyright © 2006 Marvell
Page 28 Document Classification: Proprietary Information February 21, 2006, Preliminary
4.2.2 LDO Regulator
VBUCK
ILOAD
Load Transient Response (2 x Addi-
tional Output Capacitance)
100mV/DIV
2A/DIV
VBUCK
ILOAD
Double-Pulsed Lo ad Response
100mV/DIV
2A/DIV
20 μs/DIV 20 μs/DIV
VIN = 5.0V ILOAD = 0.2A to 2A VIN = 5.0 V ILOAD = 0.2A to 2A
VBUCK = 1.2V VBUCK = 1.2V
Additional COUT = 2X22 μF Additional COUT = 2X22 μF
VBUCK
ILOAD
Load Transie nt Response
50mV/DIV
1A/DIV
20 μs/DIV
VIN = 5.0V ILOAD = 0.2A to 0.8A
VLDO = 3.3V
Functional Characteristics
Switching Waveforms
Copyright © 2006 Marvell Doc. No. MV-S101948-00 R ev. D
February 21, 2006, Preliminary Document Classification: Proprietary Information Page 29
4.3 Switching Waveforms
NOTE: For repeatabili ty of measuring output ripple (VOUT(P-P)), the test procedure is to set the scope bandwidth to
20MHz and uses a coax cable with very short leads terminated into 50Ω. The coax leads must be routed away
from the switching node as much as possible.
VBUCK
PWM Output Ripple Voltage
20mV/DIV
2 ms/DIV
VIN = 5.0V
VBUCK = 1.2V
IOUT = 2A
VOUT(P-P) = 15.7 mV (Note)
_
88MG815/88MG816/88MG830/88MG831
Non Isolated, Step-Down Sw i tch in g Regu lator Module with AnyVoltage™ Technology.
Single and Dual Output Voltage Versions
Doc. No. MV-S101948-00 Rev. D Copyright © 2006 Marvell
Page 30 Document Classification: Proprietary Information February 21, 2006, Preliminary
4.4 Efficiency
88MG830 EFFICIENCY VS. OUTPUT CURRENT
VIN = 5.0V @ 25°C
88MG830 EFFICIENCY VS. OUTPUT CURRENT
VIN = 3.3V @ 25°C
50
60
70
80
90
100
00.511.52
Output Current (A)
Efficiency (%)
3.3V
2.5V
1.8V
1.5V
1.2V
1.0V
0.8V
50
60
70
80
90
100
00.511.52
Output Current (A)
Efficiency (%)
2.5V
1.8V
1.5V
1.2V
1.0V
0.8V
Functional Characteristics
Considerations for Bench Testing and Hot Plug Applications
Copyright © 2006 Marvell Doc. No. MV-S101948-00 R ev. D
February 21, 2006, Preliminary Document Classification: Proprietary Information Page 31
4.5 Considerations for Bench Testing and Hot Plug Appli-
cations
These power modules have an Absolute Maximum inp ut voltage rating of 6V. This means you must be careful
when bench testing or with applications that require “Hot Plugging” of VIN to the system. Hot Plug applications are
those that instantly apply voltage to a power module from a long cable. Common examples of this are: Bench top
power supplies that supply power to the module through lon g banana plug cords and power obtained from “wall
wart” linear supplies. It turns out that long cables or wires can act as “transmission cables” and when the power is
applied to the module input, the re sult is a reflected transient wave that can almost DOUBLE the input voltage.
This can have the consequence of destroying th e power module because its maximum input voltage rating has
been exceeded. This is not a power module “problem”, but an applica tion environment problem that can be over-
come.
4.5.1 Hot Plug Solution
The input voltage ringing on a long power cord occurs because the cable sees an AC short-circuit at the input of
the power module. This is because the input capacitor to the module is a ceramic capacitor with extremely low
ESR. To minimize or eliminate the amplitude of the ringing voltage it is necessary to add external capacitors in par-
allel to the module input capacitors. However, these capacitors need to have noticeable ESR – which is what
dampens the ringing.
When bench testing or working on a “hot plug” application, Marvell recommend s the followin g practice:
4.5.2 Hot Plug Protection for bench testing and Wall Wart Applica-
tions
•Add a 22uF – 100uF Tantalum capacitor located near the input connector of your system. The measurable
ESR of the Tantalum capacitor will help dissipate any potential ringing expected from the inp ut line.
The additional capacitance and use of capacitors with measurable ESR results in keeping any voltage overshoot
less than 6V.
88MG815/88MG816/88MG830/88MG831
Non Isolated, S tep-Down Switching Regulator Module with AnyVoltage™
Technology. Single and Dual Output Voltage Versions
Doc. No. MV -S101948-00, Rev. D Copyright © 2006 Marvell
Page 32 Document Classification: Proprietary Information February 21, 2006, Preliminary
Section 5. Mechanical Drawings
5.1 M echanical Dimensions for 88MG815z & 88MG830z
Figure 8: 88MG815z & 88MG830z SIP Series Mechanical Dimensions
(2.54)
(2.54) (2.54)
1 32
(2.54)
(2.54) (2.54)
4567
0.047(1.19)MAX.
PCB
8-Ø0.030(0.762)
8
0.025(0.64)
TOP VIEW
SIDE VIEW
Copyright © 2006 Marvell Doc. No. MV-S101948-00, Rev. D
February 21, 2006, Preliminary Document Classification: Proprietary Information Page 33
Mechanical Drawings
Mechanical Dimensions for 88MG815z & 88MG830z
Figure 9: 88MG815z & 88MG830z DIP Series Mechanical Dimensions
7-Ø0.028(0.71)
TOP VIEW
(3.23) (3.18) (3.18)
(3.18)
SIDE VIEW
PIN(7X)
PCB
88MG815/88MG816/88MG830/88MG831
Non Isolated, S tep-Down Switching Regulator Module with AnyVoltage™
Technology. Single and Dual Output Voltage Versions
Doc. No. MV -S101948-00, Rev. D Copyright © 2006 Marvell
Page 34 Document Classification: Proprietary Information February 21, 2006, Preliminary
Figure 10: 88MG815z & 88MG830z SMT Series Mechanical Dimensions
7-Ø0.079(2.0) Pad
(3.18)
(3.18)
(3.23)
TOP VIEW
1 2
7
34
(3.18)
65
SIDE VIEW
PCB
7-?0.079(2.0)?
0.079(2.0) Pad
Copyright © 2006 Marvell Doc. No. MV-S101948-00, Rev. D
February 21, 2006, Preliminary Document Classification: Proprietary Information Page 35
Mechanical Drawings
Mechanical Dimensions for 88MG816 & 88MG831
5.2 M echanical Dimensions for 88MG816 & 88MG831
Figure 11: 88MG816 & 88MG831 SIP Series Mechanical Dimensions
7-Ø0.030(0.762)
TOP VIEW
(2.5
4)
(2.5
4)
(2.5
4)
(2.5
4)
(2.5
4)
21 3 4 5 6 7
SIDE VIEW
0.025(0.64)
0.047(1.19)MAX.
PCB
88MG815/88MG816/88MG830/88MG831
Non Isolated, S tep-Down Switching Regulator Module with AnyVoltage™
Technology. Single and Dual Output Voltage Versions
Doc. No. MV -S101948-00, Rev. D Copyright © 2006 Marvell
Page 36 Document Classification: Proprietary Information February 21, 2006, Preliminary
Figure 12: 88MG816 & 88MG831 DIP Series Mechanical Dimensions
6-Ø0.028(0.71)
(3.18)
TOP VIEW
(3.23)
1
(3.23)
6
(3.18)
23
54
PIN(6X)
PCB
SIDE VIEW
Copyright © 2006 Marvell Doc. No. MV-S101948-00, Rev. D
February 21, 2006, Preliminary Document Classification: Proprietary Information Page 37
Mechanical Drawings
Mechanical Dimensions for 88MG816 & 88MG831
Figure 13: 88MG816 & 88MG831 SMT Series Mechanical Dimensions
TOP VIEW
(3.23)
1
6
(3.18)
2
5
3
4
(3.23) (3.18)
6-?0.079(2.0) Pad
6-Ø0.063(1.6) Pad
SIDE VIEW
PCB
88MG815/88MG816/88MG830/88MG831
Non Isolat ed, Step-Down Switching Regulator Module with AnyVoltage™ Technology.
Single and Dual Output Voltage Versions
Doc. No. MV -S101948-00, Rev. D Copyright © 2006 Marvell
Page 38 Document Classification: Proprietary Information February 21, 2006, Preliminary
Section 6. Ordering Information
6.1 Ordering Part Numbers and Package Markings
Figure 14 shows the ordering part numbering scheme for the 88MG815z & 88MG830z devices. Contact Marvell®
FAEs or sales representatives for complete ordering information.
Figure 14: 88MG815z & 88MG830z Part Number
Figure 15: 88MG816 & 88MG8 31 Par t Number
Part Number
88MG815
88MG830
Package Code
S- SIP
D-DIP
T-SMT
88MG815 z A0-x
LDO Output Voltage
Options
e.g., B = 3.3V
E = 2.5V Internal Code
Part Number
88MG816
88MG831
Package Code
S- SIP
D-DIP
T-SMT
88MG816 - A0 -x
Internal Code
Copyright © 2006 Marvell Doc. No. MV-S101948-00, Rev. D
February 21, 2006, Preliminary Document Classification: Proprietary Information Page 39
Ordering Information
Sample Ordering Part Number
6.2 Sample Ordering Part Number
The standard ordering part numbers for the respective solutions are as follows:
Table 9: Ordering Part Numbers
Part Number Switcher
Output
Voltage
LDO
Output
Voltage
Output
Current Ambient
Temperature
Range1
1. Any specifications that pertains to the operating temp erature range -4 0°C to 85°C are
assured by design, characterization, and correlation with statistical process controls.
Package
88MG815B -S Programmable 3.3V 1.0A -40°C to 85°C9-pin SIP
88MG815E-S Programmable 2.5V 1.0A -40°C to 85°C9-pin SIP
88MG815B-D Programmable 3.3V 1.0A -40°C to 85°C7-pin DIP
88MG815E-D Programmable 2.5V 1.0A -40°C to 85°C7-pin DIP
88MG815B-T Programmable 3.3V 1.0A -40°C to 85°C7-pin SMT
88MG815E-T Programmable 2.5V 1.0A -40°C to 85°C7-pin SMT
88MG816-S Programmable -- 1.0A -40°C to 85°C8-pin SIP
88MG816-D Programmable -- 1.0A -40°C to 85°C6-pin DIP
88MG816-T Programmable -- 1.0A -40°C to 85°C6-pin SMT
88MG830B-S Programmable 3.3V 2.0A -40°C to 85°C9-pin SIP
88MG830E-S Programmable 2.5V 2.0A -40°C to 85°C9-pin SIP
88MG830B-D Programmable 3.3V 2.0A -40°C to 85°C7-pin DIP
88MG830E-D Programmable 2.5V 2.0A -40°C to 85°C7-pin DIP
88MG830B-T Programmable 3.3V 2.0A -40°C to 85°C7-pin SMT
88MG830E-T Programmable 2.5V 2.0A -40°C to 85°C7-pin SMT
88MG831-S Programmable -- 2.0A -40°C to 85°C8-pin SIP
88MG831-D Programmable -- 2.0A -40°C to 85°C6-pin DIP
88MG831-T Programmable -- 2.0A -40°C to 85°C6-pin SMT
88MG815/88MG816/88MG830/88MG831
Non Isolat ed, Step-Down Switching Regulator Module with AnyVoltage™ Technology.
Single and Dual Output Voltage Versions
Doc. No. MV -S101948-00, Rev. D Copyright © 2006 Marvell
Page 40 Document Classification: Proprietary Information February 21, 2006, Preliminary
6.3 Package Marking
6.3.1 88MG815z Package Marking
Figure 16 is an example of the package marking for the 88MG815z part. Markings for the other variants are simi-
lar.
Figure 16: 88MG815z Package Marking
G15 zy
YWW$ Part Number
Year, Work week, Assembly code
Y = Last digit of year
WW = Work week
$ = Assembly code
Note: The above example is not drawn to scale. Locations of markings are approximat e.
LDO Output Voltage Options
Package Options
(S, D, or T)
Copyright © 2006 Marvell Doc. No. MV-S101948-00, Rev. D
February 21, 2006, Preliminary Document Classification: Proprietary Information Page 41
Ordering Information
Package Marking
Table 10: Marking Specification Table
Part Number Abbreviations
88MG815B-S G15BS
88MG815E-S G15ES
88MG815B-D G15BD
88MG815E-D G15ED
88MG815B-T G15BT
88MG815E-T G15ET
88MG816-S G16-S
88MG816-D G16-D
88MG816-T G16-T
88MG830B-S G30BS
88MG830E-S G30ES
88MG830B-D G30BD
88MG830E-D G30ED
88MG830B-T G30BT
88MG830E- T G30ET
88MG831-S G31-S
88MG831-D G31-D
88MG831-T G31-T
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