LP5951

GND

NC

Enable Control,

active high

1

3

2

4

5

Load

1 PF

1 PF

LP5951

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SNVS345F – JUNE 2006 – REVISED MAY 2013

LP5951 Micropower, 150mA Low-Dropout CMOS Voltage Regulator

Check for Samples: LP5951

1

FEATURES

DESCRIPTION

The LP5951 regulator is designed to meet the

2

•

Excellent Line Transient Response: ±2mV typ.

requirements of portable, battery-powered systems

•

Excellent PSRR: -60dB at 1kHz typ.

providing

a

regulated

output

voltage

and

low

•

Low Quiescent Current of 29µA typ.

quiescent current. When switched to shutdown mode

via a logic signal at the Enable pin, the power

•

1.8 to 5.5V Input Voltage Range

consumption is reduced to virtually zero.

•

Small SC70-5 and SOT-23-5 Packages

The LP5951 is designed to be stable with small 1µF

•

Fast Turn-on Time of 30µs typ.

ceramic capacitors.

•

Typ. < 1nA Quiescent Current in Shutdown

The LP5951 also features internal protection against

•

Ensured 150mA Output Current

short-circuit

currents

and

over-temperature

•

Output Voltage Range: 1.3V to 3.7V

conditions.

•

Logic Controlled Enable 0.4V/0.9V

Performance is specified for a -40°C to 125°C

•

Good Load Transient Response of 50mVpp

temperature range.

typ.

The device is available in SOT-23-5 and SC70-5

•

Thermal-overload and Short-circuit Protection

package.

•

-40°C to +125°C Junction Temperature Range

The device is available in fixed output voltages in the

range of 1.3V to 3.7V. For availability, please contact

APPLICATIONS

your local TI sales office.

•

General Purpose

Typical Application Circuit

1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Copyright © 2006–2013, 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.