Datasheet > LT1120A_04

LT1120A_04

更新时间： 2024-11-22 04:43:51

品牌	Logo	应用领域
凌特 - Linear		稳压器比较器
页数	文件大小	规格书
8页	160K
描述
Micropower Regulator with Comparator and Shutdown

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中文翻译

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数据手册

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LT1120A_04 数据手册

LT1120A

Micropower Regulator with

Comparator and Shutdown

FEATURES

DESCRIPTIO

The LT^®1120A is a combination micropower positive

regulator and free collector comparator on a single mono-

lithic chip. With only 20µA supply current, the LT1120A

can supply over 125mA of output current. Input voltage

range is from 4.5V to 36V and dropout voltage is 0.6V at

125mA. Dropout voltage decreases with lower load cur-

rents. Also included on the chip is a class B output 2.5V

reference that can either source or sink current. This

allows it to be used as a supply splitter or auxiliary output.

A shutdown pin allows logic shutdown of the output.

■

20µA Supply Current

■

125mA Output Current

■

2.5V Reference

■

Reference Output Sources 4mA and Sinks 4mA

■

Open Collector Comparator Sinks 10mA

■

Logic Shutdown

■

0.2V Dropout Voltage

■

Thermal Limiting

■

8-Lead SO Package

The comparator can be used for system or battery moni-

toring. For example, the comparator can be used to warn

of low system voltage. Frequency compensation of the

comparator for amplifier applications can be obtained by

adding external output capacitance.

APPLICATIO S

■

Battery Systems

■

Battery Backup System

■

Portable Terminals

■

Portable Instruments

, LTC and LT are registered trademarks of Linear Technology Corporation.

■

Memory Keep Alive

TYPICAL APPLICATIO

5V Regulator

Dropout Voltage and Supply Current

1.00

0.10

0.01

> 5.2V

OUT

= 20µA

LT1120A

0.001µF

GND

10µF

25µF

1120A TA01

SHUTDOWN

0.1

100

1000

OUTPUT CURRENT (mA)

1120A TA02

1120afa

12 3 4 5 6 7 8

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