MIC5216 查看數據表（PDF） - Micrel

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MIC5216

500mA-Peak Output LDO Regulator

Micrel 

MIC5216

500mA-Peak Output LDO Regulator

General Description

The MIC5216 is an efficient linear voltage regulator with

high peak output current capability, very low dropout

voltage, and better than 1% output voltage accuracy.

Dropout is typically 10mV at light loads and less than

500mV at full load.

The MIC5216 is designed to provide a peak output current

for startup conditions where higher inrush current is

demanded. It features a 500mA peak output rating.

Continuous output current is limited only by package and

layout.

The MIC5216 has an internal undervoltage monitor with a

flag output. It also can be enabled or shutdown by a

CMOS or TTL compatible signal. When disabled, power

consumption drops nearly to zero. Dropout ground current

is minimized to help prolong battery life. Other key features

include reversed-battery protection, current limiting,

overtemperature shutdown, and low noise performance.

The MIC5216 is available in fixed output voltages in

space-saving SOT-23-5 and MM8™ 8-pin power MSOP

packages. For higher power requirements see the

MIC5209 or MIC5237.

Data sheets and support documentation can be found on

Micrel’s web site at www.micrel.com.

Features

• Error Flag indicates undervoltage fault

• Guaranteed 500mA-peak output over the full operating

temperature range

• Low 500mV maximum dropout voltage at full load

• Extremely tight load and line regulation

• Tiny SOT-23-5 and MM8™ power MSOP-8 package

• Low-noise output

• Low temperature coefficient

• Current and thermal limiting

• Reversed input polarity protection

• CMOS/TTL-compatible enable/shutdown control

• Near-zero shutdown current

Applications

• Laptop, notebook, and palmtop computers

• Cellular telephones and battery-powered equipment

• Consumer and personal electronics

• PC Card VCC and VPP regulation and switching

• SMPS post-regulator/dc-to-dc modules

• High-efficiency linear power supplies

Typical Application

5V Low-Noise Regulator

3.3V Low-Noise Regulator

MM8 and Micrel Mini 8 are trademarks of Micrel, Inc.

Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

March 2007

M9999-032307

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