LT1020M

更新时间： 2024-09-24 22:55:47

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
16页	365K
描述
Micropower Regulator and Comparator

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LT1020M 数据手册

LT1020

Micropower Regulator

and Comparator

DESCRIPTIO

EATURE

■

40µA Supply Current

The LT1020 is a combination micropower positive regula-

tor and free collector comparator on a single monolithic

chip. With only 40µA supply current, the LT1020 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 currents. Also

included on the chip is a class B output 2.5V reference that

can either source or sink current. A dropout detector

provides an output current to indicate when the regulator

is about to drop out of regulation.

125mA Output Current

2.5V Reference Voltage

Reference Output Sources 1mA and Sinks 0.5mA

Dual Output Comparator

Comparator Sinks 10mA

Dropout Detector

0.2V Dropout Voltage

Thermal Limiting

Available in SO Package

O U

The dual output comparator can be used as a comparator

for system or battery monitoring. For example, the com-

parator can be used to warn of low system voltage while

the dropout detector shuts down the system to prevent

abnormaloperation.Frequencycompensationofthecom-

parator for amplifier applications can be obtained by

adding external output capacitance. Dual output or posi-

tive and negative regulators can also be made.

PPLICATI

Battery Systems

■

Battery Backup Systems

Portable Terminals

Portable Instruments

The 2.5V reference will source or sink current. This allows

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

TYPICAL APPLICATI

5V Regulator

Dropout Voltage and Supply Current

> 5.2V

OUT

= 40µA

0.001µF

LT1020

10µF

GND

0.1

1020 TA01

0.01

0.1

1000

0.1

100

OUTPUT CURRENT (mA)

1020 TA02

12 3 4 5 6 7...16

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