MAX4960 Maxim Integrated Products, MAX4960 Datasheet
MAX4960
Manufacturer Part Number
MAX4960
Description
(MAX4959 / MAX4960) High-Voltage OVP with Battery Switchover
Manufacturer
Maxim Integrated Products
Datasheet
1.MAX4960.pdf
(17 pages)
www.DataSheet4U.com
The MAX4959/MAX4960 overvoltage protection con-
trollers protect low-voltage systems against high-volt-
age faults of up to +28V. When the input voltage
exceeds the overvoltage lockout (OVLO) threshold,
these devices turn off an external pFET to prevent dam-
age to the protected components. The undervoltage
lockout (UVLO) threshold holds the external pFET off
until the input voltage rises to the correct level. An addi-
tional safety feature latches off the pFET when an incor-
rect low-power adapter is plugged in.
The MAX4959/MAX4960 control an external battery
switchover pFET (P2) (see Figures 4 and 6) that switches
in the battery when the AC adapter is unplugged. The
undervoltage and overvoltage trip levels can be adjusted
with external resistors.
The input is protected against ±15kV HBM ESD when
bypassed with a 1µF ceramic capacitor to ground. All
devices are available in a small 10-pin (2mm x 2mm)
µDFN and 10-pin µMAX packages and are specified for
operation over the extended -40°C to +85°C temperature
range.
19-0874; Rev 0; 7/07
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.
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High-Voltage OVP with Battery Switchover
________________________________________________________________ Maxim Integrated Products
( ) MAX4960 ONLY.
General Description
+
10
1
9
2
MAX4959
MAX4960
Applications
µDFN
8
3
7
4
6
5
o Overvoltage Protection Up to +28V
o ± 2.5% Accurate Externally Adjustable
o Battery Switchover pFET Control
o Protection Against Incorrect Power Adapter
o Low (100µA Typ) Supply Current
o 25ms Input Debounce Timer
o 25ms Blanking Time
o 10-Pin (2mm x 2mm) µDFN and 10-Pin µMAX
+ Denotes a lead-free package.
* Future product—Contact factory for availability.
Typical Operating Circuits appear at end of data sheet.
MAX4959ELB+ -40°C to +85°C
MAX4959EUB+* -40°C to +85°C
MAX4960ELB+ -40°C to +85°C
MAX4960EUB+* -40°C to +85°C
(SOURCE1)
OVLO/UVLO Thresholds
Packages
GATE1
PART
N.C.
UVS
OVS
IN
1
2
3
4
5
TEMP RANGE
MAX4959
MAX4960
µMAX
Ordering Information
Pin Configurations
PIN-
PACKAGE
10 μDFN
10 μMAX
10 μDFN
10 μMAX
10
6
7
8
9
V
GATE2
N.C.
GND
CB
DD
MARK
Features
AAO
TOP
AAP
—
—
L1022-1
L1022-1
CODE
U10-1
U10-1
PKG
1
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