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AAT4292

Seven Channel High-Side I/O Expander

Analog Technology Inc 

SmartSwitchTM

General Description

The AAT4292 SmartSwitchTM is a member of AnalogicTech’s

Application Specific Power MOSFETTM (ASPMTM) product

family. The AAT4292 has seven P-channel MOSFETs

configured for use as a high side microprocessor GPIO

expander powered from a common supply source.

Operating over a 1.8V to 5.5V range, the AAT4292 is

ideal for portable Li-Ion/Polymer powered products. The

state of each output channel is controlled with a single

GPIO line via the EN/SET pin using AnalogicTech’s Simple

Serial Control™ (AS2Cwire™) interface.

The switch states are controlled by AnalogicTech’s Simple

Serial Control (AS2Cwire) interface which permits ease of

control and efficiency of size. The quiescent supply

current is very low, typically 6.3μA. In shutdown mode,

the supply current is reduced to less than 1μA.

The AAT4292 is offered in a Pb-free, 10-pin SC70JW

package specified over the -40°C to +85°C temperature

range.

PRODUCT DATASHEET

AAT4292

Seven Channel High-Side I/O Expander

Features

• VIN Range: 1.8V – 5.5V

• 7 Independent Output Channels

• 1.1Ω RDS(ON) per Channel

• User Programmable AS2Cwire Interface

• Low Quiescent Current

▪ 6.3μA Operational

▪ 0.1μA in shutdown

• -40°C to +85°C Temperature Range

• Available in SC70JW-10 Package

Applications

• Cell Phone Keypad, Backlight And Fashion Lighting

Control

• I/O Expander

• Media Players

• Multiple Channel Low Power Switching

• Portable Electronic Devices

Typical Application

Input Voltage Supply

CIN

1μF

Control Logic

VIN

OUT1

OUT2

OUT3

AAT4292

OUT4

EN/SET

OUT 5

OUT6

OUT7

GND

4292.2008.08.1.0

www.analogictech.com

Output 1

Output 2

Output 3

Output 4

Output 5

Output 6

Output 7

1

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