April 2003

1

MIC5212

MIC5212

Micrel

MIC5212

Dual 500mA LDO Regulator

Final

General Description

The MIC5212 is a dual linear voltage regulator with very-low

dropout voltage (typically 10mV at light loads and 350mV at

500mA), very-low ground current (225

µA at 10mA output),

and better than 1% initial accuracy.

Both regulator outputs can supply up to 500mA at the same

time as long as each regulator’s maximum junction tempera-

ture is not exceeded.

Key features include current limiting, overtemperature shut-

down, and protection against reversed battery.

The MIC5212 is available in a fixed 3.3V/2.5V output voltage

configuration. Other voltages are available; contact Micrel for

details.

Typical Application

IN = 5V

4.7

µF

4.7

µF 4.7µF

MIC5212-SJBM

GND

OUTB

OUTA

INA

INB

3.3V/2.5V Dual LDO

Features

• Fused lead frame SOIC-8

• Up to 500mA per regulator output

• Low quiescent current

• Low dropout voltage

• Tight load and line regulation

• Low temperature coefficient

• Current and thermal limiting

• Reversed input polarity protection

Applications

• Hard disk drives

• CD R/W

• Bar code scanners

• SMPS post regulator/DC-to-DC modules

• High-efficiency linear power supplies

Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • http://www.micrel.com

Ordering Information

Part Number

Voltage

Accuracy

Junction Temp. Range*

Package

MIC5212-SJBM

3.3V/2.5V

1.0%

–40

°C to +125°C

8-lead SOIC

Other voltages available. Contact Micrel for details.