MIC5268(2002) 查看數據表（PDF） - Micrel

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MIC5268
(Rev.:2002)

150mA µCap CMOS LDO Regulator w/Power Good

Micrel 

MIC5268

Micrel

MIC5268

150mA µCap CMOS LDO Regulator w/Power Good

Preliminary Information

General Description

The MIC5268 is an efficient, precise CMOS voltage regulator

with power good output. The MIC5268 offers better than 3%

initial accuracy, and constant ground current (typically

100µA)over load .

The MIC5268 also works with low-ESR ceramic capacitors,

reducing the amount of board space necessary for power

applications, critical in hand-held wireless devices.

Key features include current limit, thermal shutdown, a push-

pull output for faster transient response, and an active clamp

to speed up device turnoff. Available in the IttyBitty™ SOT-23-5

package, the MIC5268 is a fixed 1.2V regulator.

Features

• Power Good indicator

• Load independent, ultralow ground current: 100µA

• 150mA output current

• Current limiting

• Thermal shutdown

• Tight load and line regulation

• “Zero” off-mode current

• Stability with low-ESR capacitors

• Fast transient response

• TTL-Logic-controlled enable input

Applications

• Processor power-up sequencing

• Laptop, notebook, and palmtop computers

• PCMCIA VCC and VPP regulation/switching

Ordering Information

Part Number

Marking Voltage

MIC5268-1.2BM5

L512

1.2

Other voltages available. Contact Micrel for details.

Junction Temp. Range*

–40°C to +125°C

Package

SOT-23-5

Typical Application

47k

VIN

MIC5268-x.xBM5

1

5

2

Enable

3

4

Shutdown

EN

EN (pin 3) may be

connected directly

to IN (pin 1).

VOUT

COUT

PG

1.2V Regulator with Power Good

IttyBitty is a trademark of Micrel, Inc.

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

September 2002

1

MIC5268

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