MIC5202

Micrel

July 1998

3-135

3

MIC5202

Dual 100mA Low-Dropout Voltage Regulator

Preliminary Information

Typical Application

Ordering Information

Part Number

Volts Accuracy Temperature Range* Package

MIC5202-3.0BM

3.0

1%

–40

°C to +125°C

SO-8

MIC5202-3.3BM

3.3

1%

–40

°C to +125°C

SO-8

MIC5202-4.8BM

4.85

1%

–40

°C to +125°C

SO-8

MIC5202-5.0BM

5.0

1%

–40

°C to +125°C

SO-8

Pin Configuration

Other voltages are available; contact Micrel for details.

Features

•

High output voltage accuracy

•

Variety of output voltages

•

Guaranteed 100mA output

•

Low quiescent current

•

Low dropout voltage

•

Extremely tight load and line regulation

•

Very low temperature coefficient

•

Current and thermal limiting

•

Reverse-battery protection

•

Zero OFF mode current

•

Logic-controlled electronic shutdown

•

Available in SO-8 package

Applications

•

Cellular Telephones

•

Laptop, Notebook, and Palmtop Computers

•

Battery Powered Equipment

•

PCMCIA V

•

Bar Code Scanners

•

SMPS Post-Regulator/ DC to DC Modules

•

High Efficiency Linear Power Supplies

General Description

The MIC5202 is a family of dual linear voltage regulators with

very low dropout voltage (typically 17mV at light loads and

210mV at 100mA), and very low ground current (1mA at

100mA output–each section), offering better than 1% initial

accuracy with a logic compatible ON/OFF switching input.

Designed especially for hand-held battery powered devices,

the MIC5202 is switched by a CMOS or TTL compatible logic

signal. This ENABLE control my be tied directly to V

unneeded. When disabled, power consumption drops nearly

to zero. The ground current of the MIC5202 increases only

slightly in dropout, further prolonging battery life. Key MIC5202

features include protection against reversed battery, current

limiting, and over-temperature shutdown.

The MIC5202 is available in several fixed voltages. Other

options are available; contact Micrel for details.

MIC5202-3.3

Enable B

Output A

Output B

Enable A

Both GROUND pins must be tied to

the same potential. V

from separate supplies.

* Junction Temperature

1

ENABLE pins may be tied directly to V

IN

GROUND

VOUT (A)

VIN (A)

ENABLE (B)

MIC5202-xxBM

VOUT (B)

ENABLE (A)

VIN (B)

GROUND