Datasheet > AAT4702

AAT4702

更新时间： 2024-09-26 01:11:19

品牌	Logo	应用领域
思佳讯 - SKYWORKS		/
页数	文件大小	规格书
20页	2532K
描述
Auto-Restarting Current Limiting Load Switch with LDO Regulator

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DATA SHEET

AAT4702

Auto-Restarting Current Limiting Load Switch with LDO Regulator

General Description

Features

The AAT4702 SmartSwitch™ is a member of Skyworks'

Application Specific Power MOSFET™ (ASPM™) product

family. This device integrates a high side P-channel

MOSFET current limiting load switch with a nanopower

low dropout (LDO) linear voltage regulator, making the

AAT4702 ideal for use in load current protected applica-

tions that also require a system power supply. The load

switch operates with input voltages ranging from 2.4V to

5.5V, making it ideal for 2.5V, 3V, and 5V systems. A

fault flag is provided to alert the system to an over-

current event. The fault flag has a 5ms blanking time to

prevent from reporting false events such as inrush cur-

rents during system startup.

Load Switch:

 2.4V-5.5V Input Voltage Range

 150mA Default Current Limit Level

 270m Typical R_DS(ON)at 2.4V

 400ns Response to Short Circuit

 Reverse Voltage Protection

 Current Limit Shutdown with Output Pull Down

 Auto Restart with 40ms Timer

 5ms Fault Blanking Timeout

 Under-Voltage Lockout Protection

LDO Regulator:

 Output Current up to 100mA

 1.8V Output Voltage with ±2% Accuracy

 Thermal and Short Circuit Protection

 Active Shutdown Output Pull-Down

 Low Quiescent Current 15μA Typical for Switch and

LDO

 Less than 1μA Shutdown Current

 Only 1ꢀF Ceramic Output Capacitor Required

 Available in FTDFN22-8L Package.

The load switch current limit is 150mA by default or pro-

grammed up to 1A through an external set resistor.

The AAT4702 LDO linear regulator is designed to deliver

a regulated 1.8V supply voltage for load levels up to

100mA. The regulator section may be powered directly

from an input source supply or from the load switch out-

put.

The AAT4702 is offered in a Pb-free, space-saving 8-pin

2x2mm FTDFN22 package, and is specified for operation

over the -40°C to +85°C ambient temperature range.

Applications

 Cell Phones

 Device Peripheral Ports

 Fingerprint Sensors

 Hot Swap Supplies

 Media Players

 Notebook Computers

Typical Application

INPUT

OUT

OUTPUT

AAT4702

1μF

N/C

IN_REG

SET

ON / ON

FLT

ENABLE

LDO REG OUTPUT

VREG

FAULT FLAG

GND

1μF

Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com

201964A

• Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • May 17, 2012

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AAT4702IXS-1-T1	SKYWORKS	获取价格	Auto-Restarting Current Limiting Load Switch with LDO Regulator
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