Datasheet > 电源电路 > 电源管理电路> AAT4621ITP-T1

AAT4621ITP-T1

更新时间： 2024-02-07 18:35:57

品牌	Logo	应用领域
ANALOGICTECH		电源电路电源管理电路 PC
页数	文件大小	规格书
16页	778K
描述
PC Card Current Limit Interface and Capacitor Charger

阅读下载

获取价格

技术参数
数据手册

如果您发现信息不准确，欢迎纠错

AAT4621ITP-T1 技术参数

生命周期：	Transferred	包装说明：	,
Reach Compliance Code：	unknown	风险等级：	5.72
Base Number Matches：	1

AAT4621ITP-T1 数据手册

AAT4621

PC Card Current Limit Interface

and Capacitor Charger

™

SmartSwitch

General Description

Features

The AAT4621 SmartSwitch is a current limited P-

channel MOSFET power switch designed for high-

side load-switching applications in PC Card

GSM/GPRS/3G modem cards. Used in conjunc-

tion with a super capacitor, the AAT4621 will

ensure that the power ratings of the PCMCIA host

are not exceeded at any time. Featuring two inde-

pendent, programmable current limits and a power

loop, the AAT4621 can ensure that the super

capacitor can be charged without exceeding PCM-

CIA specifications. The current limit is set by two

external resistors allowing a 1ꢀ0 current limit

accuracy over the normal operating temperature

range. The switch can be controlled from either of

the two enable inputs and in the off condition will

block currents in both directions. The AAT4621

also incorporates a System READY function which

can advise the system that the super capacitor is

fully charged and ready for use. Adjustable hys-

teresis is provided with the addition of an external

resistor. The quiescent supply current is typically a

low 4ꢀµA. In shutdown mode, the supply current

decreases to less than 1µA.

•

V_INRange: 3.ꢀV to 5.5V

Dual Independent Current Limits

— 75mA to 12ꢀꢀmA

—

1ꢀ0 Current Accuracy

— 2ꢀ°C Temperature Band

Reverse Current Blocking Protection

Power Loop

Low Quiescent Current

— 4ꢀµA Typical

— 1.ꢀµA Max with Switch Off

65mΩ Typical R_DS(ON)at 3V

Only 1.4V Needed for Enable Control Pin

System READY Output with Externally

Programmable Hysteresis

Under-Voltage Lockout

Temperature Range: -4ꢀ to 85°C

12-Pin TSOPJW Package or 14-Pin TDFN33

Package

•

Applications

•

Capacitor Charger

The AAT4621 is available in a thermally enhanced,

Pb-free, 12-pin TSOPJW or 14-pin TDFN33 pack-

age and is specified over the -4ꢀ°C to 85°C tem-

perature range.

CF Card Port Power Protection

Express Card GSM/GPRS/3G Modems

PC Card GSM/GPRS Class 1ꢀ/12 Modems

WiMAX Cards

Typical Application

100kΩ

Reverse

Blocking

OUT

RDY

To Load

To μC

VCC

V _CC

Over-Temp

Protection

Power

Loop

Under-

Voltage

Lockout

EN IL

EN IU

EN_SUPERCAP

EN_OPERATION

Current

Limit

Control

ISETL

ISETU

1.2V

Reference

GND

SuperCap

R_HYS

R_SETU

R_SETL

4621.2007.07.1.0

12 3 4 5 6 7...16

下载PDF

与AAT4621ITP-T1相关器件

型号	品牌	描述	获取价格	数据表
AAT4621IWO-1-T1	ANALOGICTECH	Power Management Circuit,	获取价格
AAT4621IWO-T1	ANALOGICTECH	PC Card Current Limit Interface and Capacitor Charger	获取价格
AAT4625	ANALOGICTECH	USB Single-Channel Power Switch	获取价格
AAT4625	AAT	USB Single-Channel Power Switch	获取价格
AAT4625_06	ANALOGICTECH	USB Single-Channel Power Switch	获取价格
AAT4625IAS-1-B1	ANALOGICTECH	USB Single-Channel Power Switch	获取价格