LT1120CS8PBF Linear Technology Corporation, LT1120CS8PBF Datasheet

LT1120CS8PBF

Manufacturer Part Number

LT1120CS8PBF

Description

SOP8

Manufacturer

Linear Technology Corporation

Datasheets

1.LT1120CN8PBF.pdf (12 pages)

2.LT1120CN8PBF.pdf (12 pages)

Specifications of LT1120CS8PBF

Date_code

10+

Current page: 1 of 12
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FEATURES

■

TYPICAL APPLICATIO

APPLICATIO S

= 40μA

40μA Supply Current

125mA Output Current

2.5V Reference Voltage

Reference Output Sources 2mA and Sinks 2mA

Open Collector Comparator Sinks 10mA

Logic Shutdown

0.2V Dropout Voltage

Thermal Limiting

Available in 8-Lead DIP and SO Packages

Battery Systems

Battery-Backup System

Portable Terminals

Portable Instruments

Memory Keep-Alive

> 5.2V

10μF

SHUTDOWN

SHDN

LT1120

5V Regulator

GND

OUT

0.001μF

1120 TA01

25μF

Comparator and Shutdown

Micropower Regulator with

DESCRIPTIO

The LT

lator and free collector comparator on a single monolithic

chip. With only 40μA supply current, the LT1120 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 shutdown pin allows

logic shutdown of the output.

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.

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

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

All other trademarks are the property of their respective owners.

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

1120 is a combination micropower positive regu-

1.00

0.10

0.01

Dropout Voltage and Supply Current

0.1

OUTPUT CURRENT (mA)

100

1120 TA02

1000

LT1120

0.1

1120fd

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