LP3983

Micropower, Low Quiescent Current, CMOS Voltage

Regulator in micro SMD Package

General Description

The LP3983 is a fixed voltage low current regulator.

The LP3983 is ideally suited to standby type applications in

battery powered equipment, it allows the lifetime of the bat-

tery to be maximized. The device can be controlled via an

Enable(disable) control and can thus be used by the system

to further extend the battery lifetime by reducing the power

consumption to virtually zero.

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

range.

For output voltages other than those stated and alternative

package options, please contact your local NSC sales office.

Features

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Miniature 5 pin package

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Logic Controlled Enable

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No Noise Bypass Capacitor Required

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Stable with Low ESR Ceramic Capacitors

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Fast turn ON

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Short Circuit Protection

Package

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Tiny 5 Pin micro SMD

828µm by 1387µm

Key Specifications

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Input Voltage Range

2.5 to 6.0V

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Output Voltages

1.6, 1.8, & 2.5

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Output Current

5mA

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Output Capacitors

1µF Low ESR

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Virtually Zero I

1.0µA

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Low I

14µA

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PSRR

10dB

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Fast Start Up

170µs

Applications

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GSM Portable Phones

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CDMA Cellular Handsets

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Bluetooth Devices

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Portable Information Appliances

Typical Application Circuit

20057601

May 2003

© 2003 National Semiconductor Corporation

DS200576

www.national.com