LP5951MF-3.3+ National Semiconductor, LP5951MF-3.3+ Datasheet

LP5951MF-3.3+

Manufacturer Part Number

LP5951MF-3.3+

Description

Manufacturer

National Semiconductor

Datasheet

1.LP5951MF-2.5.pdf (12 pages)

Specifications of LP5951MF-3.3+

Notes

NEW

Date_code

10+

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LP5951

Micropower, 150mA Low-Dropout CMOS Voltage

Regulator

General Description

The LP5951 regulator is designed to meet the requirements

of portable, battery-powered systems providing a regulated

output voltage and low quiescent current. When switched to

shutdown mode via a logic signal at the Enable pin, the power

consumption is reduced to virtually zero.

The LP5951 is designed to be stable with small 1µF ceramic

capacitors.

The LP5951 also features internal protection against short-

circuit currents and over-temperature conditions.

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

range.

The device is available in SOT23-5 and SC70-5 package.

The device is available in fixed output voltages in the range

of 1.3V to 3.3V. For availability, please contact your local NSC

sales office.

Typical Application Circuit

201362

Features

■

Applications

■

Excellent line transient response: ±2mV typ.

Excellent PSRR: -60dB at 1kHz typ.

Low quiescent current of 29µA typ.

1.8 to 5.5V input voltage range

Small SC70-5 and SOT23-5 packages

Fast turn-on time of 30µs typ.

Typ. < 1nA quiescent current in shutdown

Guaranteed 150mA output current

Output voltage range: 1.3V to 3.3V

Logic controlled enable 0.4V/0.9V

Good load transient response of 50mVpp typ.

Thermal-overload and short-circuit protection

-40°C to +125°C junction temperature range

General purpose

20136201

www.national.com

May 2007

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