8183

LOW-DROPOUT,

3 V REGULA-

TOR

DISCONTINUED

PRODUCT

—

FOR

REFERENCE

ONL

Y

8183

Designed specifically to meet the requirement for extended opera-

tion of battery-powered equipment such as cordless and cellular

telephones, the A8183SLU voltage regulator offers the reduced dropout

voltage and quiescent current essential for maximum battery life.

Applicable also to palmtop computers and personal data assistants, the

device delivers a regulated, continuous 3 V output at up to 75 mA under

normal operating conditions, or to 150 mA (transient) under worst-case

conditions.

A PMOS pass element provides a typical dropout voltage of only

90 mV at 60 mA of load current. The low dropout voltage permits

deeper battery discharge before output regulation is lost. Furthermore,

quiescent current does not increase as the dropout voltage is ap-

proached, an ideal feature in standby/resume power systems where

data integrity is crucial. Regulator accuracy and excellent temperature

characteristics are provided by a bandgap reference. An ENABLE input

gives the designer complete control over power up, standby, or power

down.

This device is supplied in a 6-lead small-outline plastic package

(similar to the SOT-89/TO-243AA) for surface-mount applications. The

A8183SLU is rated for operation over a temperature range of -20

°C to

+85

°C.

FEATURES AND BENEFITS

s High Efficiency Provides Extended Battery Life

s 90 mV Typical Dropout Voltage at I

s 45

µA Typical Quiescent Current at V

Less Than 1

µA “Sleep” Current

s Up to 150 mA Output Current

s CMOS-Compatible ON/OFF Control

For Power-Up, Standby, or Shutdown

s Internal Thermal Protection

s Surface-Mount Package

APPLICATIONS

s Cordless and Cellular Telephones

s Personal Data Assistants

s Personal Communicators

s Palmtop Computers

Dwg. PS-021

VR

2

3

1

6

4

SUB

5

SUB

LOW-DROPOUT, 3 V REGULATOR

— HIGH EFFICIENCY

ABSOLUTE MAXIMUM RATINGS

Input Voltage, V

10 V

Output Current, I

150 mA*

Enable Input Voltage, V

V

I

Operating Temperature Range,

T

-20

Junction Temperature, T

+150

Storage Temperature Range,

T

-40

* Output current rating is limited by input voltage,

duty cycle, and ambient temperature. Under

any set of conditions, do not exceed a junction

temperature of +150

°C. See next page.

† Fault conditions that produce excessive junction

temperature will activate device thermal

shutdown circuitry. These conditions can be

tolerated but should be avoided.

Always order by complete part number:

A8183SLU

.