12V Slew Rate Controller Load Switch
SmartSwitchTM
General Description
The AAT4285 SmartSwitch is a P-channel MOSFET power switch designed for high-side load...
Description
SmartSwitchTM
General Description
The AAT4285 SmartSwitch is a P-channel MOSFET power switch designed for high-side load switching applications. The MOSFET operates from a 3.0V to 13.2V input range making it ideal for applications in single or dual cell Lithium-Ion battery systems. The device has a typical RDS(ON) of 240mΩ at 12V, allowing a low forward voltage drop and high current handling capability. The device is a slew rate limited turn-on load switch and is functionally compatible with the AAT4250 and AAT4280 products, while offering a high operating voltage. The AAT4285 features fast load switch turn-on capability of 100μs and offers a shutdown load discharge circuit to rapidly turn off a load circuit when the switch is disabled. The quiescent supply current is very low, typically 25μA.
The AAT4285 is available in a Pb-free, 8-pin SC70JW package and is specified over the -40°C to +85°C temperature range.
PRODUCT DATASHEET
AAT4285
12V Slew Rate Controlled Load Switch
Features
VIN Range: 3.0V to 13.2V Low RDS(ON)
▪ 240mΩ Typical @ 12V ▪ 310mΩ Typical at 5V
100μs Slew Rate Turn-on Time Fast Shutdown Load Discharge Low Quiescent Current
▪ Typically 25μA ▪ 1μA Maximum in Shutdown
TTL/CMOS Input Logic Level Temperature Range: -40°C to +85°C 8-pin SC70JW Package
Applications
2 Cell Lithium-Ion Batteries Camcorders Handheld Test Equipment Load Switching
Typical Application
V IN
C IN 1µF
ON
IN OUT
IN AAT4285
ON/OFF
GND × 4
GND
V OUT C OUT 0.1µF
...
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