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LP3983 Micropower, Low Quiescent Current, CMOS Voltage Regulator in micro SMD Package

May 2003

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藲C to 125藲C temperature

range.

For output voltages other than those stated and alternative

package options, please contact your local NSC sales office.

Key Specifications

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Input Voltage Range

Output Voltages

Output Current

Output Capacitors

Virtually Zero I

Q

(Disabled)

Low I

Q

(Enabled)

PSRR

Fast Start Up

2.5 to 6.0V

1.6, 1.8, & 2.5

5mA

1碌F Low ESR

1.0碌A

14碌A

10dB

170碌s

Applications

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GSM Portable Phones

CDMA Cellular Handsets

Bluetooth Devices

Portable Information Appliances

Features

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Miniature 5 pin package

Logic Controlled Enable

No Noise Bypass Capacitor Required

Stable with Low ESR Ceramic Capacitors

Fast turn ON

Short Circuit Protection

Package

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Tiny 5 Pin micro SMD

828碌m by 1387碌m

Typical Application Circuit

20057601

漏 2003 National Semiconductor Corporation

DS200576

www.national.com

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