LP2953QML, LP2953QML-SP

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SNVS395C – NOVEMBER 2010 – REVISED APRIL 2013

LP2953QML Adjustable Micropower Low-Dropout Voltage Regulators

Check for Samples: LP2953QML, LP2953QML-SP

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FEATURES

DESCRIPTION

The LP2953A is a micropower voltage regulator with

2

•

Output Voltage Adjusts from 1.23V to 29V

very low quiescent current (130

μA typical at 1 mA

•

Ensured 250 mA Output Current

load) and very low dropout voltage (typ. 60 mV at

•

Extremely Low Quiescent Current

light load and 470 mV at 250 mA load current). It is

ideally

suited

for

battery-powered

systems.

•

Low Dropout Voltage

Furthermore, the quiescent current increases only

•

Extremely Tight Line and Load Regulation

slightly at dropout, which prolongs battery life.

•

Very Low Temperature Coefficient

The LP2953A retains all the desirable characteristics

•

Current and Thermal Limiting

of the LP2951, but offers increased output current,

•

Reverse Battery Protection

additional

features,

and

an

improved

shutdown

function.

•

50 mA (Typical) Output Pulldown Crowbar

•

Auxiliary Comparator Included with CMOS/TTL

The internal crowbar pulls the output down quickly

when the shutdown is activated.

Compatible Output Levels. Can be used for

Fault Detection, Low Input Line Detection, etc.

The error flag goes low if the output voltage drops out

of regulation.

APPLICATIONS

Reverse battery protection is provided.

•

High-Efficiency Linear Regulator

The internal voltage reference is made available for

•

Regulator with Under-Voltage Shutdown

external use, providing a low-T.C. reference with very

•

Low Dropout Battery-Powered Regulator

good line and load regulation.

•

Snap-ON/Snap-OFF Regulator

Connection Diagram

Note: Pins 1, 8, 9, 16 must be shorted together on customer PC board application

Figure 1. 16-Pin CFP Package

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PRODUCTION DATA information is current as of publication date.

Copyright © 2010–2013, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.