SiP32430
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28 V, 99 m, Load Switch with Programmable Current Limit and
Slew Rate Control
OPERATION DESCRIPTION
The SiP32430 is a load switch integrates multiple control
features that simplify the design and increase the reliability
of the circuitry connected to the switch. The SiP32430 is
designed to operate in the 6 V to 28 V range.
An internally generated gate drive voltage ensures low
switch resistance over the wind input voltage operating
range.
The SiP32430 has a slew rate control circuit that programs
the switch turn-on time to the value set by an external
capacitor.
An over-current protection circuit (OCP) continuously
monitors the current through the load switch. When the over
current protection is triggered, the circuit controls the switch
impedance to clamp the current to the level programmed by
an external resistor. The trigger current is typically 8 % over
the set current limit. In case the over-current condition
persists for more than 7 ms, the switch shuts off
automatically.
The SiP32430 has an over temperature protection circuit
(OTP) which will shut the switch off immediately if the
junction temperature exceeds over temperature limit of
typically 150 °C. The OTP circuit will release the switch
when the temperature has decreased by about 20 °C of
hysteresis.
When an OCP or an OTP fault condition is detected the FLG
pin is pulled low. The fault flag will release 150 ms after the
fault condition is cleared, and the switch will automatically
turn on at the programmed slew rate.
The SiP32430 features a low voltage control logic interface
which can be controlled without the need for level shifting. It
also includes a power good flag.
The SiP32430 is available in a space efficient DFN10 of
3 mm x 3 mm package.
FEATURES
• 6 V to 28 V operation
• Programmable soft start
• Programmable current limit
• Over temperature protection
• On resistance 99 m
• Power good, when VOUT reaches 90 % of VIN
• OCP / OTP fault flag
• Under voltage lockout: 4.8 V / 5.4 V (typ. / max.)
• If no OTP, auto re-try to soft turn on 150 ms after the
switch protected off
• Package: DFN10 3 mm x 3 mm
• Material categorization: for definitions of compliance
please see www.vishay.com/doc?99912
APPLICATIONS
• Personal computers
• Lighting
• Flat panel displays
• Game consoles
• Industrial
• Network communication
• Data storage
TYPICAL APPLICATION CIRCUIT
Fig. 1 - SiP32430 Typical Application Circuit
Available
SiP32430
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Note
• -GE4 denotes halogen-free and RoHS-compliant
Notes
a. Device mounted with all lead and power pad soldered or welded to PCB
b. Derate 11.4 mW/°C above TA = 25 °C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation
of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum
rating conditions for extended periods may affect device reliability.
ORDERING INFORMATION
TEMPERATURE RANGE PACKAGE MARKING PART NUMBER
-40 °C to +85 °C DFN10 3 mm x 3 mm 2430 SiP32430DN-T1-GE4
ABSOLUTE MAXIMUM RATINGS
PARAMETER LIMIT UNIT
Input voltage (VIN)-0.3 to 30
V
Output voltage (VOUT)-0.3 to VIN + 0.3 V
PG voltage -0.3 to 30
FLG voltage -0.3 to 30
EN voltage -0.3 to 6
Maximum continuous switch current 3.2 A
ESD rating (HBM) 4000 V
Maximum junction temperature 150 °C
Storage temperature -55 to +150
Thermal resistance (thJA) a88 °C/W
Power dissipation (PD) a, b 1.42 W
RECOMMENDED OPERATING RANGE
PARAMETER LIMIT UNIT
Input voltage (VIN)6 to 28
V
VSS 0 to 6
VOUT 0 to 28
EN 0 to 6
FLG. PG 0 to VIN
ILIM 0 to 6
Current limit 0.1 to 1 A
Operating temperature range -40 to +85 °C
SiP32430
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SPECIFICATIONS
PARAMETER SYMBOL
TEST CONDITIONS UNLESS
SPECIFIED
VIN = 12 V, VEN = 2.4 V, TA = 25 °C
TEMP. MIN. TYP. MAX. UNIT
Power input voltage VIN -6 -28V
Quiescent current IQIOUT = 0 A, and device enabled - - 163 300
µA
Shutdown current ISD IOUT = 0 A, and device disabled - - 11 20
Switch off leakage I(OFF)
VIN = 28 V, VOUT = 0 V
(current measured at output) -- - 1
Current limit clamp RSET = 12 k -40 °C
to +85 °C 0.28 0.35 0.42 A
Current limit trigger % above setting current -40 °C
to +85 °C -8-%
Switch on resistance RDS(on) ISW = 500 mA - - 99 120 m
Soft start charge current ISS Constant current source - - 4.5 - µA
Turn on delay time TON_DLY
50 % VEN to 50 % VOUT, CSS = open,
RL = 10 , COUT = 10 µF --0.8-
ms
50 % VEN to 50 % VOUT, CSS = 47 nF,
RL = 10 , COUT = 10 µF --6.7-
Turn on rise time TR
CSS = open, RL = 10 ,
COUT = 10 µF -- 1 -
CSS = 47 nF, RL = 10 ,
COUT = 10 µF --9.5-
CSS = 47 nF, no RL,
COUT = 10 µF --2.5-
Turn off delay TOFF_DLY -- 8 -
µsCurrent limit response time - - 20 -
Short circuit response time - - 1 -
OC flag blanking time /
switch off delay under OC
-40 °C
to +85 °C 4--
ms
Auto-retry time --150-
Input logic high voltage VENH
VIN = 6 V to 28 V
-40 °C
to +85 °C 1.5 - -
V
Input logic low voltage VENL -40 °C
to +85 °C --0.6
Input pull down resistor REN VEN = 5 V - - 2.5 - M
Power good trip voltage - - 90 % x VIN -
V
Power good hysteresis - - 3 % x VIN -
PG and FLG output logic low
voltage ISINK = 1 mA - - < 0.1 -
PG and FLG output high leakage VPG, VFLG = 28 V - - - 1 µA
UVLO threshold --4.85.4
V
UVLO hysteresis - - 0.28 -
Thermal shutdown threshold - - 150 - °C
Thermal shutdown hysteresis - - 20 -
SiP32430
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TIMING DIAGRAM
Fig. 2 - Timing Diagram
PIN CONFIGURATION
Fig. 3 - DFN10 3 mm x 3 mm Package
Top View
Over temperature or
end of blanking time
VOUT
Current limit mode
EN
/PG
IOUT
ILIM
/FLG
150 ms retry time. In case
of OT, it is OT protection
period plus 150 ms
Load current below limit
Short circuit response time
5 ms or OT which
ever occurs the rst
Programmable
slew rate Low switch ON
resistance
Thermal
shutdown &
over current
off latching
Programmable
over current protection
& 6 ms blanking
period
1 µs short circuit
response Auto retry
in 150 ms
VIN 1
VIN 2
SS 3
EN 4
ILIM 5
VOUT
10
VOUT
9
FLG8
PG7
GND6
SiP32430
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BLOCK DIAGRAM
Fig. 4 - Block Diagram
TYPICAL CHARACTERISTICS (internally regulated, 25 °C, unless otherwise noted)
Fig. 5 - Quiescent Current vs. Input Voltage Fig. 6 - Quiescent Current vs. Temperature
PIN DESCRIPTION
PIN NUMBER NAME FUNCTION
1V
IN Power input
2V
IN Power input
3SS
Soft-start pin. Connect a capacitor from SS to GND to program the soft-start
time. Leave SS open to set the default soft-start time of 400 µs
4 EN Enable input. Logic high enabled
5I
LIM Current limit setting pin. Connect RSET resistor to GND
6GNDGround
7PG
Power good
8FLG
Fault condition flag
9V
OUT Switch output
10 VOUT Switch output
Central pad Connect this pad to GND or leave it floating
Driver
Slew rate
control
Current
limit
Under
voltage
lockout
Regulator
Logic,
timing,
& control
Thermal
protection
/FLG
SS
/PG
EN
ILIM
VOUT
VIN
6 V to 28 V
CIN
COUT
28 V max.
To load
CSS
RSET
ON
OFF
GND
120
130
140
150
160
170
180
190
200
210
220
5 1015202530
IQ-Quiescent Current (µA)
VIN (V)
120
130
140
150
160
170
180
190
200
210
220
- 40 - 20 0 20 40 60 80 100
IQ-Quiescent Current (µA)
Temperature (°C)
VIN = 6 V
VIN = 12 V
VIN = 28 V
SiP32430
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TYPICAL CHARACTERISTICS (internally regulated, 25 °C, unless otherwise noted)
Fig. 7 - Shutdown Current vs. Input Voltage
Fig. 8 - Shutdown Current vs. Input Voltage
Fig. 9 - On Resistance vs. Input Voltage
Fig. 10 - Shutdown Current vs. Temperature
Fig. 11 - Switch Off Current vs. Temperature
Fig. 12 - On Resistance vs. Temperature
0
2
4
6
8
10
12
14
16
18
20
5 1015202530
ISD-Shutdown Current (μA)
VIN (V)
-1.8
-1.6
-1.4
-1.2
-1
-0.8
-0.6
-0.4
-0.2
0
5 1015202530
I(OFF) -Switch Off Current (nA)
VIN (V)
96
97
98
99
100
101
102
5 1015202530
RDS-On-Resistance (mΩ)
VIN (V)
ISW= 0.5 A
0
2
4
6
8
10
12
14
16
18
20
- 40- 200 20406080100
ISD-Shutdown Current (μA)
Temperature (°C)
VIN = 12 V
VIN = 28 V
VIN = 6 V
-175
-150
-125
-100
-75
-50
-25
0
25
- 40 - 20 0 20 40 60 80 100
I(OFF) -Switch Off Current (nA)
Temperature (°C)
VIN = 6 V
VIN = 28 V
VIN = 12 V
70
80
90
100
110
120
130
- 40 - 20 0 20 40 60 80 100
RDS-On-Resistance (mΩ)
Temperature (°C)
ISW= 0.5 A
VIN = 12 V
SiP32430
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TYPICAL CHARACTERISTICS (internally regulated, 25 °C, unless otherwise noted)
Fig. 13 - On Resistance vs. Output Current
Fig. 14 - Soft Start Current vs. Input Voltage
Fig. 15 - Threshold Voltage vs. Input Voltage
Fig. 16 - Soft Start Current vs. Temperature
Fig. 17 - EN Current vs. VEN
96
97
98
99
100
101
102
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
RDS-On-Resistance (mΩ)
IOUT (A)
VIN = 12 V
- 8
- 7
- 6
- 5
- 4
- 3
- 2
- 1
0
5 1015202530
ISS -Soft Start Current (μA)
VIN (V)
1
1.05
1.1
1.15
1.2
1.25
1.3
5 1015202530
EN Threshold Voltage (V)
VIN (V)
VIH
VIL
-4.7
-4.6
-4.5
-4.4
-4.3
-4.2
-4.1
-4.0
-3.9
- 40 - 20 0 20 40 60 80 100
ISS -Soft Start Current (μA)
Temperature (°C)
VIN = 12 V
0
0.5
1
1.5
2
2.5
0123456
IEN - EN Current (μA)
VEN (V)
VIN = 12 V
SiP32430
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TYPICAL CHARACTERISTICS (internally regulated, 25 °C, unless otherwise noted)
Fig. 18 - EN Resistance vs. Temperature
Fig. 19 - Rise Time vs. Temperature
Fig. 20 - Turn-On Delay Time vs. Temperature
Fig. 21 - Turn-Off Delay Time vs. Temperature
Fig. 22 - Rise Time vs. Temperature
Fig. 23 - Turn-On Delay Time vs. Temperature
1.5
1.75
2
2.25
2.5
2.75
3
3.25
3.5
- 40 - 20 0 20 40 60 80 100
REN -EN Resistance (MΩ)
Temperature (°C)
VIN = 12 V
VEN = 5V
0.90
0.95
1.00
1.05
1.10
1.15
1.20
- 40 - 20 0 20 40 60 80 100
tR-Rise Time (μs)
Temperature (°C)
VIN = 12 V
CSS = Open
CL= 10 µF
RL= 10 Ω
0.60
0.65
0.70
0.75
0.80
0.85
0.90
- 40 - 20 0 20 40 60 80 100
tONDLY - Turn-On Delay Time (ms)
Temperature (°C)
VIN = 12 V
CSS = Open
CL= 10 µF
7.0
7.2
7.4
7.6
7.8
8.0
8.2
8.4
8.6
8.8
9.0
9.2
- 40 - 20 0 20 40 60 80 100
tOFFDLY - Turn-Off Delay Time (µs)
Temperature (°C)
VIN = 12 V
CSS = Open
CL= 10 µF
RL= 10 Ω
8.2
8.4
8.6
8.8
9.0
9.2
9.4
9.6
9.8
10.0
10.2
- 40 - 20 0 20 40 60 80 100
tR-Rise Time (ms)
Temperature (°C)
VIN = 12 V
CSS = 47nF
CL= 10 µF
RL= 10 Ω
5.6
5.8
6.0
6.2
6.4
6.6
6.8
7.0
7.2
7.4
7.6
- 40- 200 20406080100
tONDLY - Turn-On Delay Time (ms)
Temperature (°C)
VIN = 12 V
CSS = 47nF
CL= 10 µF
SiP32430
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TYPICAL WAVEFORMS
Fig. 24 - Turn-On Time,
VIN = 12 V, CSS = open, RL = 10 , CL = 10 μF
Fig. 25 - Turn-On Time,
VIN = 12 V, CSS = 47 nF, RL = 10 , CL = 10 μF
Fig. 26 - VIN = 12 V, RL = 82 , RSET = 16.2 k,
Css = 150 nF, COUT = open
Fig. 27 - Turn-Off Time,
VIN = 12 V, CSS = open, RL = 10 , CL = 10 μF
Fig. 28 - Turn-Off Time,
VIN = 12 V, CSS = 47 nF, RL = 10 , CL = 10 μF
Fig. 29 - VIN = 12 V, RL = 82 , RSET = 16.2 k,
Css = 150 nF, COUT = open
SiP32430
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TYPICAL WAVEFORMS
Fig. 30 - VIN = 12 V, RL = open, RSET = 16.2 k,
Css = 150 nF, COUT = open
Fig. 31 - VIN = 12 V, RL = 82 , RSET = 16.2 k,
Css = 150 nF, COUT = 10 μF
Fig. 32 - VIN = 12 V, RL = open, RSET = 16.2 k,
Css = 150 nF, COUT = 10 μF
Fig. 33 - VIN = 12 V, RL = open, RSET = 16.2 k,
Css = 150 nF, COUT = open
Fig. 34 - VIN = 12 V, RL = 82 , RSET = 16.2 k,
Css = 150 nF, COUT = 10 μF
Fig. 35 - VIN = 12 V, RL = open, RSET = 3.32 k,
Css = 150 nF, COUT = 10 μF
SiP32430
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TYPICAL WAVEFORMS
Fig. 36 - VIN = 12 V, RL = 14 , RSET = 3.32 k,
Css = 150 nF, COUT = open
Fig. 37 - VIN = 12 V, RL = open, RSET = 3.32 k,
Css = 150 nF, COUT = open
Fig. 38 - VIN = 12 V, RL = 14 , RSET = 3.32 k,
Css = 150 nF, COUT = 10 μF
Fig. 39 - VIN = 12 V, RL = 14 , RSET = 3.32 k,
Css = 150 nF, COUT = open
Fig. 40 - VIN = 12 V, RL = open, RSET = 3.32 k,
Css = 150 nF, COUT = open
Fig. 41 - VIN = 12 V, RL = 14 , RSET = 3.32 k,
Css = 150 nF, COUT = 10 μF
SiP32430
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TYPICAL WAVEFORMS
Fig. 42 - VIN = 12 V, RL = open to 2 , RSET = 16.2 k,
Css = 150 nF, COUT = open
Fig. 43 - VIN = 12 V, RL = open to 2 , RSET = 3.32 k,
Css = 150 nF, COUT = open
Fig. 44 - VIN = 12 V, RL = 2 , RSET = 16.2 k, Css = 150 nF,
COUT = 10 μF, Re-Starts after ~ 150 ms during Fault Condition
Fig. 45 - VIN = 12 V, RL = 136 to 2 , RSET = 16.2 k,
Css = 150 nF, COUT = open
Fig. 46 - VIN = 12 V, RL = 34 to 2 , RSET = 3.32 k,
Css = 150 nF, COUT = open
SiP32430
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DETAILED DESCRIPTION
Over Current Limit
When an over-current event occurs, the SiP32430 will limit
the current immediately. If the event exceeds 7 ms, the
SiP32430 will turn off the switch. The FLG pin is pulled low
upon the switch off. The SiP32430 will auto restart 150 ms
after the switch off and the recovery from over temperature.
The SiP32430 current limit is set an external resistor
between the ILIM pin and GND. RSET can be selected per the
following table and curve.
Fig. 47 - Current Limit vs. RSET
The current limit trigger level is typically 8 % over the current
limit setting current.
Soft Start
The soft start time can be calculated by the following
formula:
Where:
t is the soft start time
VOUT is the output voltage range
ISS is the built-in current source charging the soft start
capacitor CSS. ISS value is 5 µA typical.
CSS is the soft start time setting capacitor.
RSET is the current limit setting resistor.
ROUT is the output load.
Enable
The device is logic high enable. This can be accomplished
by applying a logic high signal to the EN pin. Alternatively
this pin can be hardwired through a resistor divider to the
VIN, thus keeping the switch permanently ON as long as the
supply is present.
FLG
The FLG is an open drain output and will be pulled low under
over temperature or over current conditions.
PG
The PG is an open drain output that will be pulled low when
output voltage reaches 90 % of the VIN.
RSET SELECTION TABLE
RSET
(k)
CURRENT LIMIT (A)
(SETTLING) TOL.
(%)
CURRENT LIMIT
TRIGGER POINT
(A)
MIN. TYP. MAX. TYP.
4.22 0.81 1.01 1.21 20 1.12
5.36 0.65 0.81 0.97 20 0.87
7.15 0.49 0.61 0.73 20 0.66
10.2 0.33 0.42 0.50 20 0.46
12 0.28 0.35 0.42 20 0.38
13.3 0.25 0.31 0.37 20 0.35
18.7 0.17 0.21 0.26 20 0.25
24.3 0.11 0.16 0.21 30 0.19
I
SS
C
SS
R
OUT
x 3300
R
SET
ΔV
OUT
Δt
x=
SiP32430
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APPLICATION INFORMATION
Input Capacitor
While bypass capacitors at the inputs pins are not required,
a 2.2 µF or larger capacitors for CIN is recommended in
almost all applications. The bypass capacitors should be
placed as physically close to the device's input pins to be
effective to minimize transients on the input. Ceramic
capacitors are recommended over tantalum because of
their ability to withstand input current surges from low
impedance sources such as batteries.
Output Capacitor
SiP32430 does not require an output capacitor for proper
operation. A proper value COUT is recommended to
accommodate load transient per circuit design
requirements. There are no specific ESR or capacitor type
requirements.
Over Temperature Shutdown
In case an over temperature event happens, the SiP32430
will turn the switch off immediately. The SiP32430 will then
retry to start 150 ms after the temperature is back to normal;
during this period, FLG will be pulled low. The SiP32430
FLG will be pulled high 150 ms after the OT event has
finished.
Thermal Consideration
SiP32430 is designed to maintain a constant output load
current under over current event. Due to physical limitations
of the layout and assembly of the device, the maximum
switch current should be kept at reasonably safe level within
the range of SOA. However, another limiting characteristic
of the safe operating load current is the power dissipation.
The power dissipation need to be considered in the layout
design to reduce the device temperature.
SOA
Fig. 48 - SOA on Application Board
Fig. 49 - Application Board Layout
0.01
0.1
1
10
0.01 0.1 1 10 100
ID (A)
VDS (V)
25 °C ambient
single pulse1 ms
DC
10 ms
100 ms
1 s
10 s
SiP32430
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reliability data, see www.vishay.com/ppg?65223.
PRODUCT SUMMARY
Part number SiP32430
Description 6 V to 28 V, 99 m, programmable current limit and slew rate, auto retry on fault
Configuration Single
Slew rate time (s) Adjustable
On delay time (s) 80
Input voltage min. (V) 6
Input voltage max. (V) 28
On-resistance at input voltage min. (m)99
On-resistance at input voltage max. (m)99
Quiescent current at input voltage min. (µA) 148
Quiescent current at input voltage max. (µA) 185
Output discharge (yes / no) No
Reverse blocking (yes / no) No
Continuous current (A) 3.2
Current limit min. (A) 0.1
Current limit max. (A) 1.0
Absolute maximum input voltage (V) 30
Package type DFN33-10L
Package size (W, L, H) (mm) 3.0 x 3.0 x 0.9
Status code 2
Product type Slew rate, current limit
Applications Computers, consumer, industrial, healthcare, networking, portable
BOTTOM VIEW
NOTES:
1. All dimensions are in millimeters and inches.
2. N is the total number of terminals.
3. Dimension b applies to metallized terminal and is measured
between 0.15 and 0.30 mm from terminal tip.
4. Coplanarity applies to the exposed heat sink slug as well as the
terminal.
5. The pin #1 identifier may be either a mold or marked feature, it
must be located within the zone iindicated.
ÉÉÉÉ
ÉÉÉÉ
ÉÉÉÉ
ÉÉÉÉ
E
D
D/2
E/2
TOP VIEW
SEATING
PLANE
A3A1
A
SIDE VIEW
C0.08
C0.10//
4NX
3Terminal Tip
e
3
C0.10 MA B
NXb
E2
Exposed Pad
NXL
D2
Index Area
D/2 E/2
5
Index Area
D/2 E/2
5C0.15 2x
C0.15 2x
Package Information
Vishay Siliconix
Document Number: 73181
29-Nov-04 www.vishay.com
1
DFN-10 LEAD (3 X 3)
MILLIMETERS INCHES
Dim Min Nom Max Min Nom Max
A0.80 0.90 1.00 0.031 0.035 0.039
A1 0.00 0.02 0.05 0.000 0.001 0.002
A3 0.20 BS C 0.008 BSC
b0.18 0.23 0.30 0.007 0.009 0.012
D3.00 BSC 0.118 BSC
D2 2.20 2.38 2.48 0.087 0.094 0.098
E3.00 BSC 0.118 BSC
E2 1.49 1.64 1.74 0.059 0.065 0.069
e0.50 BSC 0.020 BSC
L0.30 0.40 0.50 0.012 0.016 0.020
*Use millimeters as the primary measurement.
ECN: S-42134—Rev. A, 29-Nov-04
DWG: 5943
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Revision: 01-Jan-2021 1Document Number: 91000
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