MAX4864L/MAX4865L/MAX4866L/MAX4867
Overvoltage Protection Controllers
with Reverse Polarity Protection
________________________________________________________________
Maxim Integrated Products
1
Typical Operating Circuit
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
General Description
The MAX4864L/MAX4865L/MAX4866L/MAX4867 over-
voltage protection controllers protect low-voltage sys-
tems against high-voltage faults up to +28V, and
negative voltages down to -28V. These devices drive a
low-cost complementary MOSFET. If the input voltage
exceeds the overvoltage threshold, these devices turn
off the n-channel MOSFET to prevent damage to the
protected components. If the input voltage drops below
ground, the devices turn off the p-channel MOSFET to
prevent damage to the protected components. An inter-
nal charge pump eliminates the need for external
capacitors and drives the MOSFET GATEN for a simple,
robust solution.
The overvoltage thresholds are preset to +7.4V
(MAX4864L), +6.35V (MAX4865L), +5.8V (MAX4866L),
and +4.65V (MAX4867). When the input voltage drops
below the undervoltage lockout (UVLO) threshold, the
devices enter a low-current standby mode (8.5µA). Also in
shutdown (EN set to logic-high), the current is reduced fur-
ther (0.4µA). The MAX4864L/MAX4865L/MAX4866L have
a +2.85V UVLO threshold, and the MAX4867 has a +2.5V
UVLO threshold.
In addition, a ±15kV ESD protection is provided to the
input when bypassed with a 1µF capacitor to ground. All
devices are offered in a small 6-pin SOT23 and a 6-pin,
2mm x 2mm µDFN package, and are specified for
operation over the -40°C to +85°C temperature range.
Applications
Features
♦Overvoltage Protection Up to +28V
♦Reverse Polarity Protection Down to -28V
♦Preset Overvoltage (OV) Trip Level (7.4V, 6.35V,
5.8V, 4.65V)
♦Drive Low-Cost Complementary MOSFET
♦Internal 50ms Startup Delay
♦Internal Charge Pump
♦8.5µA Standby Current (In UVLO Mode)
♦0.4µA Shutdown Current
♦Overvoltage Fault FLAG Indicator
♦6-Pin (2mm x 2mm) µDFN and 6-Pin SOT23
Packages
19-3582; Rev 2; 5/10
Ordering Information
PART PIN-
PACKAGE
OV TRIP
LEVEL (V)
TOP
MARK
MAX4864LEUT-T 6 SOT23-6 7.40 ABVO
MAX4864LELT 6 μDFN 7.40 AAE
MAX4865LEUT-T 6 SOT23-6 6.35 ABVP
MAX4865LELT 6 μDFN 6.35 AAF
MAX4866LEUT-T 6 SOT23-6 5.80 ABVQ
MAX4866LELT 6 μDFN 5.80 AAG
MAX4867EUT-T 6 SOT23-6 4.65 ABVN
MAX4867ELT 6 μDFN 4.65 AAD
Functional Diagram appears at end of data sheet.
Note: All devices are specified over the -40°C to +85°C operating
temperature range.
T = Tape and reel.
ADAPTER
(-28V TO +28V) OUTPUT
VIO
IN
FLAG
GATEN
1μF
GND
EN
GATEP
MAX4864L
MAX4865L
MAX4866L
MAX4867
PN
Cell Phones
Digital Still Cameras
PDAs and Palmtop Devices
MP3 Players
MAX4864L/MAX4865L/MAX4866L/MAX4867
Overvoltage Protection Controllers
with Reverse Polarity Protection
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
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.
IN to GND ..............................................................-0.3V to +30V
GATEN, GATEP to GND ........................................-0.3V to +12V
IN to GATEP ...........................................................-0.3V to +20V
FLAG, EN to GND ....................................................-0.3V to +6V
Continuous Power Dissipation (TA= +70°C)
6-Pin µDFN (2mm x 2mm) (derate 2.1mW/°C
above +70°C) ..............................................................168mW
6-Pin SOT23 (derate 8.7mW/°C above +70°C)............696mW
Operating Temperature Range ..........................-40°C to +85°C
Junction Temperature .................................................... +150°C
Storage Temperature Range ............................-65°C to +150°C
Lead Temperature (soldering, 10s) ................................+300°C
Soldering Temperature (reflow) ......................................+240°C
ELECTRICAL CHARACTERISTICS
(VIN = +5V (MAX4864L/MAX4865L/MAX4866L), VIN = +4V (MAX4867), TA= -40°C to +85°C, CGATEN = 500pF, unless otherwise
noted. Typical values are at TA= +25°C.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Input Voltage Range VIN 1.2 28.0 V
MAX4864L 7.0 7.4 7.8
MAX4865L 5.95 6.35 6.75
MAX4866L 5.45 5.8 6.15
Overvoltage Trip Level OVLO VIN rising
MAX4867 4.35 4.65 4.95
V
MAX4864L 75
MAX4865L 65
MAX4866L 55
Overvoltage Lockout
Hysteresis
MAX4867 50
mV
MAX4864L/MAX4865L/MAX4866L 2.65 2.85 3.05
Undervoltage Lockout
Threshold UVLO VIN falling MAX4867 2.3 2.5 2.7 V
MAX4864L/MAX4865L/MAX4866L 44
Undervoltage Lockout
Hysteresis MAX4867 25 mV
MAX4864L/MAX4865L/MAX4866L 77 120
IN Supply Current IIN EN = GND MAX4867 68 110 µA
MAX4864L/MAX4865L/MAX4866L,
VIN = +2.6V 8.5 22
UVLO Supply Current IUVLO EN = GND
MAX4867, VIN = +2.2V 8 18
µA
MAX4864L/MAX4865L/MAX4866L,
VIN = 3.6V 0.4 2
Shutdown Supply Current ISHD EN = 1.6V
MAX4867, VIN = 3.6V 0.4 2
µA
MAX4864L/MAX4865L/MAX4866L 9 9.83 10
GATEN Voltage VGATEN 1µA load MAX4867 7.5 7.85 8.0 V
GATEN Pulldown Current IPD VIN > OVLO, VGATEN = +5.5V 12 32 65 mA
GATEP Clamp Voltage VCLAMP 13.5 16.5 19.5 V
GATEP Pulldown Resistor RGATEP 32 48 64 kΩ
FLAG Output-Low Voltage VOL ISINK = 1mA 0.4 V
FLAG Leakage Current VFLAG = +5.5V 1 µA
EN Input-High Voltage VIH 1.5 V
EN Input-Low Voltage VIL 0.4 V
MAX4864L/MAX4865L/MAX4866L/MAX4867
Overvoltage Protection Controllers
with Reverse Polarity Protection
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(VIN = +5V (MAX4864L/MAX4865L/MAX4866L), VIN = +4V (MAX4867), TA= -40°C to +85°C, CGATEN = 500pF, unless otherwise
noted. Typical values are at TA= +25°C.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
EN Input Leakage Current ILKG EN = GND or +5.5V 1 µA
TIMING
Startup Delay tSTART VIN > UVLO to VGATEN > 0.3V, Figure 1 20 50 80 ms
FLAG Blanking Time tBLANK VGATEN > 0.3V to VFLAG < 0.3V, Figure 1 20 50 80 ms
GATEN Turn-On Time tGON
CGATEN = 500pF, VGATEN = 0.3V to +8V
(MAX4864L/MAX4865L/MAX4866L)
VGATEN = 0.3V to +7V (MAX4867), Figure 1
10 ms
GATEN Turn-Off Time tGOFF
V
I N
r i si ng at 3V /µs fr om + 5V to + 8V
( M AX 4864L/M AX 4865L/M AX 4866L) ,
or fr om + 4V to + 7V ( M AX 4867)
V
GAT E N = 0.3V , C
GAT E N = 500p F, Fi g ur e 2
720µs
FLAG Assertion Delay tFLAG
VIN rising at 3V/µs from 5V to 8V
( M AX 4864L/M AX 4865L/M AX 4866L) ,
or from +4V to +7V (MAX4867), VFLAG = 0.3V,
Figure 2
3.5 µs
Initial Overvoltage Fault Delay tOVP
VIN rising at 3V/µs from 0V to +9V, time from
VIN = 5V to IGATEN = 80% of IPD (GATEN pulldown
current), Figure 3
1.5 µs
Disable Time tDIS VEN = +2.4V, VGATEN = 0.3V, Figure 4 2 µs
Note 1: All parts are 100% tested at +25°C. Electrical limits across the full temperature range are guaranteed by design and correlation.
V
GATEN
V
EN
+0.3V
+2.4V
t
DIS
Figure 4. Disable Timing Diagram
V
IN
V
UVLO
t
GON
t
START
V
GATEN
V
FLAG
t
BLANK
+0.3V
+8V (+7V)*
*MAX4867
+5V
+0.3V
Figure 1. Startup Timing Diagram
V
IN
V
OVLO
V
GATEN
V
FLAG
t
FLAG
t
GOFF
+0.3V
+0.3V
+5V
Figure 2. Shutdown Timing Diagram
V
IN
V
OVLO
t
OVP
I
GATEN
80%
0V
Figure 3. Power-Up Overvoltage Timing Diagram
MAX4864L/MAX4865L/MAX4866L/MAX4867
Overvoltage Protection Controllers
with Reverse Polarity Protection
4 _______________________________________________________________________________________
Typical Operating Characteristics
(TA = +25°C, unless otherwise noted.)
Typical Operating Characteristics
(TA = +25°C, unless otherwise noted.)
SUPPLY CURRENT vs. SUPPLY VOLTAGE
(MAX4864L)
MAX4864 toc01
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (μA)
252015105
50
100
150
200
250
300
350
0
030
REVERSE CURRENT vs. OUTPUT VOLTAGE
(MAX4864L)
MAX4864 toc02
OUTPUT VOLTAGE (V)
REVERSE CURRENT (μA)
4321
0.1
0.2
0.3
0.4
0
05
EN = 3V
REVERSE CURRENT vs. OUTPUT VOLTAGE
(MAX4864L)
MAX4864 toc03
OUTPUT VOLTAGE (V)
REVERSE CURRENT (μA)
4321
20
40
60
80
0
05
EN = 0V
DEVICE TURNS ON
AT TRANSITION
MAX4864L/MAX4865L/MAX4866L
GATEN VOLTAGE vs. INPUT VOLTAGE
MAX4864 toc04
INPUT VOLTAGE (V)
GATEN VOLTAGE (V)
642
3
6
9
12
15
0
08
MAX4864L
MAX4865L
MAX4866L
MAX4867
GATEN VOLTAGE vs. INPUT VOLTAGE
MAX4864 toc05
INPUT VOLTAGE (V)
GATEN VOLTAGE (V)
642
3
6
9
12
15
0
08
MAX4867
POWER-UP RESPONSE
MAX4864 toc06
20ms/div
10V
0V
5V
0V
IN
GATEN
FLAG
5V
0V
ADAPTER
5V
0V
POWER-UP RESPONSE
MAX4864 toc07
IN
5V/div
FLAG
5V/div
OUT
5V/div
ADAPTER
5V/div
20ms/div
IIN
1A/div
OVERVOLTAGE RESPONSE
MAX4864 toc08
IN
FLAG
5V/div
GATEN
5V/div
ADAPTER
2μs/div
IGATEN
10mA/div
5V
8V
5V
8V
MAX4864L/MAX4865L/MAX4866L/MAX4867
Overvoltage Protection Controllers
with Reverse Polarity Protection
_______________________________________________________________________________________ 5
POWER-UP OVERVOLTAGE RESPONSE
MAX4864 toc09
IN
FLAG
GATEN
ADAPTER
20ms/div
8V
0V
8V
0V
5V
0V
0V
NEGATIVE VOLTAGE RESPONSE
MAX4864 toc10
GATEP
FLAG
IN
ADAPTER
20ms/div
0V
0V
5V
0V
5V
0V
Typical Operating Characteristics (continued)
(TA= +25°C, unless otherwise noted.)
MAX4864L/MAX4865L/MAX4866L/MAX4867
Overvoltage Protection Controllers
with Reverse Polarity Protection
6 _______________________________________________________________________________________
PIN
MAX4864LEUT/
MAX4865LEUT/
MAX4866LEUT/
MAX4867EUT
MAX4864LELT/
MAX4865LELT/
MAX4866LELT/
MAX4867ELT
NAME FUNCTION
1 3 IN Voltage Input. IN is both the power-supply input and the overvoltage sense input.
2 1 GND Ground
3 2 FLAG
Faul t- Ind i cati on Outp ut. When E N g oes hi g h, FLAG b ecom es hi g h- i m p ed ance. FLAG
i s asser ted hi g h d ur i ng und er vol tag e l ockout and over vol tag e l ockout cond i ti ons.
FLAG i s d easser ted d ur i ng nor m al op er ati on. FLAG i s an op en- d r ai n outp ut.
4 6 GATEN
n-Channel MOSFET Gate-Drive Output. GATEN is the output of an on-chip charge
pump. When VUVLO < VIN < VOVLO, GATEN is driven high to turn on the external
n-channel MOSFET.
5 5 GATEP p-Channel MOSFET Gate-Drive Output. GATEP is always on when input is above
ground and off when input drops below ground.
64EN Active-Low Enable Input. Connect to ground in normal operation. Drive EN high to
disable device and enter shutdown mode.
Pin Description
Pin Configuration
GND
GATENFLAG
16EN
+
5 GATEP
IN
MAX4864L
MAX4865L
MAX4866L
MAX4867
SOT23
TOP VIEW
2
34
FLAG
ENIN
GATEN
GATEP
GND
MAX4864L
MAX4865L
MAX4866L
MAX4867
μDFN
1
2
3
6
5
4
+
MAX4864L/MAX4865L/MAX4866L/MAX4867
Detailed Description
The MAX4864L/MAX4865L/MAX4866L/MAX4867 provide
up to +28V overvoltage and negative voltage protection
for low voltage systems. When the input voltage exceeds
the overvoltage trip level, the MAX4864L/MAX4865L/
MAX4866L/MAX4867 turn off a low-cost external n-channel
MOSFET to prevent damage to the protected compo-
nents. The devices also drive an external p-channel
MOSFET to protect against negative voltage inputs. An
internal charge-pump (see the
Functional Diagram
),
drives the MOSFET GATEN for a simple, robust solution.
On power-up, the device waits for 50ms before driving
GATEN high. The open-drain FLAG output is kept at a
high impedance for an additional 50ms after GATEN goes
high before deasserting. The FLAG output asserts high
immediately to an overvoltage fault.
Undervoltage Lockout (UVLO)
The MAX4864L/MAX4865L/MAX4866L have a fixed
+2.85V typical UVLO level, and the MAX4867 has
+2.5V UVLO level. When VIN is less than the UVLO, the
GATEN driver is held low and FLAG is asserted.
Overvoltage Lockout (OVLO)
The MAX4864L has a +7.4V typical OVLO threshold;
the MAX4865L has +6.35V typical OVLO threshold; the
MAX4866L has a +5.8V typical OVLO threshold; and
the MAX4867 has a +4.65V typical OVLO threshold.
When VIN is greater than OVLO, the GATEN driver is
held low and FLAG is asserted.
FLAG Output
The open-drain FLAG output is used to signal to the
host system when there is a fault with the input voltage.
On power-up, FLAG is held high for 50ms after GATEN
turns on, before deasserting. FLAG asserts immediately
to overvoltage and undervoltage faults. When the fault
condition is removed, FLAG deasserts 50ms after
GATEN turns on. Connect a pullup resistor from FLAG
to the logic I/O voltage of the host system.
GATEN Driver
An on-chip charge pump is used to drive GATEN
above IN, allowing the use of a low-cost n-channel
MOSFET. The charge pump operates from the internal
+5.5V regulator.
The actual GATEN output voltage tracks approximately
two times VIN until VIN exceeds +5.5V, or the OVLO trip
level is exceeded, whichever comes first. The
MAX4864L has a +7.4V typical OVLO, therefore GATEN
remains relatively constant at approximately +10.5V for
+5.5V < VIN < +7.4V. The MAX4866L has a +5.8V typi-
cal OVLO, but this can be as low as +5.5V. The GATEN
output voltage is a function of input voltage, as shown
in the
Typical Operating Characteristics
.
GATEP Driver
When the input voltage drops below ground, GATEP
goes high turning the external p-channel MOSFET off.
When the input voltage goes above ground, GATEP
pulls low and turns on the p-channel MOSFET. An inter-
nal clamp protects the p-channel MOSFET by insuring
that the GATEP-to-IN voltage does not exceed +16V
when the input (IN) rises to +28V.
Device Operation
The MAX4864L/MAX4865L/MAX4866L/MAX4867 have
an on-board state machine to control device operation.
A flowchart is shown in Figure 5. On initial power-up, if
VIN < UVLO or if VIN > OVLO, GATEN is held at 0V and
FLAG is high.
If UVLO < VIN < OVLO, the device enters startup after a
50ms internal delay. The internal charge pump is
enabled, and GATEN begins to be driven above VIN by
the internal charge pump. FLAG is held high during
startup until the FLAG blanking period expires, typically
50ms after the GATEN starts going high. At this point,
the device is in its on-state.
At any time if VIN drops below UVLO, FLAG is driven
high and GATEN is driven to ground.
STANDBY
GATEN = 0
FLAG = HIGH
TIMER STARTS
COUNTING
V
IN
> UVLO
V
IN
< UVLO
V
IN
> OVLO
V
IN
> OVLO
OVLO CHECK
GATEN = 0
FLAG = HIGH
STARTUP
GATEN DRIVEN HIGH
FLAG = HIGH
ON
GATEN HIGH
FLAG = LOW
t = 50ms
t = 50ms
Figure 5. State Diagram
Overvoltage Protection Controllers
with Reverse Polarity Protection
_______________________________________________________________________________________ 7
MAX4864L/MAX4865L/MAX4866L/MAX4867
Overvoltage Protection Controllers
with Reverse Polarity Protection
8 _______________________________________________________________________________________
Applications Information
MOSFET Configuration
The MAX4864L/MAX4865L/MAX4866L/MAX4867 can be
used with either a complementary MOSFET configuration
as shown in the
Typical Operating Circuit
, or can be con-
figured with a single p-channel MOSFET and back-to-
back n-channel MOSFETs as shown in Figure 6.
The MAX4864L/MAX4865L/MAX4866L/MAX4867 can drive
either a complementary MOSFET or a single p-channel
MOSFET and back-to-back n-channel MOSFETs. The
back-to-back configuration has almost zero reverse cur-
rent when the adapter is not present or when the
adapter voltage is below the UVLO threshold.
If reverse current leakage is not a concern, a single
MOSFET can be used. This approach has half the loss
of the back-to-back configuration when used with simi-
lar MOSFET types and is a lower cost solution. Note
that if the input is actually pulled low, the output will
also be pulled low due to the parasitic body diode in
the MOSFET. If this is a concern, then the back-to-back
configuration should be used.
MOSFET Selection
The MAX4864L/MAX4865L/MAX4866L/MAX4867 are
designed for use with a complementary MOSFET or sin-
gle p-channel and dual back-to-back n-channel
MOSFETs. In most situations, MOSFETs with RON spec-
ified for a VGS of 4.5V work well. Also the VDS should
be +30V for the MOSFET to withstand the full +28V IN
range of the MAX4864L/MAX4865L/MAX4866L/
MAX4867. Table 1 shows a selection of MOSFETs
which are appropriate for use with the MAX4864L/
MAX4865L/MAX4866L/MAX4867.
IN Bypass Considerations
For most applications, bypass ADAPTER to GND with a
1µF ceramic capacitor. If the power source has signifi-
cant inductance due to long lead length, take care to
prevent overshoots due to the LC tank circuit and pro-
vide protection if necessary to prevent exceeding the
+30V absolute maximum rating on IN.
ESD Test Conditions
ESD performance depends on a number of conditions. The
MAX4864L/MAX4865L/MAX4866L/MAX4867 are specified
for ±15kV typical ESD resistance on IN when ADAPTER is
bypassed to ground with a 1µF ceramic capacitor.
Human Body Model
Figure 7 shows the Human Body Model, and Figure 8
shows the current waveform it generates when dis-
charged into a low impedance. This model consists of a
100pF capacitor charged to the ESD voltage of interest,
which is then discharged into the device through a
1.5kΩresistor.
PNN
ADAPTER
-28V TO +28V OUTPUT
VIO
IN
FLAG
GATEN
1μF
GND
GATEP
MAX4864L
MAX4865L
MAX4866L
MAX4867
Figure 6. Back-to-Back External MOSFET Configuration
Table 1. MOSFET Suggestions
PART CONFIGURATION/
PACKAGE
VGS MAX
(V)
VDS MAX
(V) RON AT 4.5V
(
mΩ
)
MANUFACTURER
+30 143 (n-MOSFET)
Si5504DC Complementary
MOSFET/1206-8 ±20 -30 290 (p-MOSFET)
Si5902DC Dual/1206-8 ±20 +30 143 (n-MOSFET)
Si1426DH Single/µDFN-6 ±20 +30 115 (n-MOSFET)
Si5435DC Single/1206-8 ±20 -30 80 (p-MOSFET)
Vishay Siliconix
FDC6561AN Dual/SSOT-6 ±20 +30 145 (n-MOSFET)
FDG315N Single/µDFN-6 ±20 +30 160 (n-MOSFET)
FDC658P Single/SSOT-6 ±20 -30 75 (p-MOSFET)
FDC654P Single/SSOT-6 ±20 -30 125 (p-MOSFET)
Fairchild Semiconductor
MAX4864L/MAX4865L/MAX4866L/MAX4867
Overvoltage Protection Controllers
with Reverse Polarity Protection
_______________________________________________________________________________________ 9
IEC 1000-4-2
Since January 1996, all equipment manufactured
and/or sold in the European Union has been required to
meet the stringent IEC 1000-4-2 specification. The IEC
1000-4-2 standard covers ESD testing and perfor-
mance of finished equipment. It does not specifically
refer to ICs. The MAX4864L/MAX4865L/MAX4866L/
MAX4867 help users design equipment that meets
Level 3 of IEC 1000-4-2, without additional ESD-protec-
tion components.
The main difference between tests done using the
Human Body Model and IEC 1000-4-2 is higher peak
current in IEC 1000-4-2. Because series resistance is
lower in the IEC 1000-4-2 ESD test model (Figure 9), the
ESD-withstand voltage measured to this standard is gen-
erally lower than that measured using the Human Body
Model. Figure 10 shows the current waveform for the
±8kV IEC 1000-4-2 Level 4 ESD Contact Discharge test.
The Air-Gap test involves approaching the device with a
charger probe. The Contact Discharge method connects
the probe to the device before the probe is energized.
Chip Information
PROCESS: BiCMOS
CHARGE-CURRENT
LIMIT RESISTOR
DISCHARGE
RESISTANCE
STORAGE
CAPACITOR
Cs
100pF
RC
1MΩ
RD
1.5kΩ
HIGH-
VOLTAGE
DC
SOURCE
DEVICE
UNDER
TEST
Figure 7. Human Body ESD Test Model
IP 100%
90%
36.8%
tRI TIME
tDL
CURRENT WAVEFORM
PEAK-TO-PEAK RINGING
(NOT DRAWN TO SCALE)
Ir
10%
0
0
AMPERES
Figure 8. Human Body Current Waveform
tR = 0.7ns TO 1ns 30ns
60ns
t
100%
90%
10%
I
PEAK
I
Figure 10. IEC 1000-4-2 ESD Generator Current Waveform
CHARGE-CURRENT
LIMIT RESISTOR
DISCHARGE
RESISTANCE
STORAGE
CAPACITOR
Cs
150pF
RC
50MΩ TO 100MΩ
RD
330Ω
HIGH-
VOLTAGE
DC
SOURCE
DEVICE
UNDER
TEST
Figure 9. IEC 1000-4-2 ESD Test Model
MAX4864L/MAX4865L/MAX4866L/MAX4867
Overvoltage Protection Controllers
with Reverse Polarity Protection
10 ______________________________________________________________________________________
PN
ADAPTER OUTPUT
VIO
IN
FLAG
GATEN
GND
EN
GATEP
MAX4864L
MAX4865L
MAX4866L
MAX4867
+15V CLAMP
+5.5V
REGULATOR
UVLO AND OVLO
DETECTOR
2x CHARGE
PUMP
CONTROL
LOGIC AND TIMER
GATE
DRIVER
Functional Diagram
PACKAGE TYPE PACKAGE CODE DOCUMENT NO.
6 µDFN L622-1 21-0164
6 SOT23 U6-1 21-0058
Package Information
For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the
package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the
package regardless of RoHS status.
MAX4864L/MAX4865L/MAX4866L/MAX4867
Overvoltage Protection Controllers
with Reverse Polarity Protection
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________
11
© 2010 Maxim Integrated Products Maxim is a registered trademark of Maxim Integrated Products, Inc.
Revision History
REVISION
NUMBER
REVISION
DATE DESCRIPTION PAGES
CHANGED
2 5/10
Deleted package codes from the Ordering Information table; updated the Pin
Configuration, Figure 7, and Figure 9; deleted the transistor count from the Chip
Information section
1, 6, 9, 10
