AAT4290(2005) Ver la hoja de datos (PDF) - Advanced Analogic Technologies

Número de pieza

componentes Descripción

Fabricante

AAT4290
(Rev.:2005)

I/O Expander Load Switches with Serial Control

Advanced Analogic Technologies 

AAT4290/4291

I/O Expander Load Switches with Serial Control

General Description

The AAT4290 and AAT4291 SmartSwitch™ prod-

ucts are members of AnalogicTech’s Application

Specific Power MOSFET™ (ASPM™) product

family. The AAT4290 and AAT4291 are five and

three P-channel MOSFETs, respectively, config-

ured for use as a microprocessor I/O expander.

Having independent drain outputs and a common

source input, they operate with an input voltage

ranging from 1.8V to 5.5V, making them ideal for

2.5V, 3.3V, or 5V systems, as well as systems pow-

ered by lithium-ion/polymer batteries. Each switch

features a 500ns turn-on time. The switch states

are controlled by a Simple Serial Control™

(S2Cwire™) interface which permits ease of control

and efficiency of size. The quiescent supply cur-

rent is very low, typically 5µA. In shutdown mode,

the supply current is reduced to less than 1µA.

The AAT4290 and AAT4291 are offered in an 8 pin

SC70JW package specified over the -40°C to

+85°C temperature range.

Features

SmartSwitch™

• 1.8V to 5.5V Input Voltage Range

• 5 or 3 Independent Load Switches

• Optional 200µS Slew Rate Control

• S2Cwire Interface

• 1.1Ω RDS(ON) Per Switch

• Low Quiescent Current

— 5µA

— 0.1µA in Shutdown

• -40°C to +85°C Temperature Range

• 8-Pin SC70JW Package

Applications

• Cell Phones

• I/O Expansion

• Multiple Low Power Switching

• Personal Communication Devices

• Portable Electronic Devices

Typical Application

INPUT

EN/SET

CIN

1µF

GND

IN

OUT1

OUT2

AAT4290 OUT3

EN/SET

OUT4

GND

OUT5

COUT1

0.1µF

COUT2

0.1µF

COUT3

0.1µF

COUT4

0.1µF

COUT5

0.1µF

OUT1

OUT2

OUT3

OUT4

OUT5

GND

4290.2005.01.1.0

1

Share Link: