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MIC5248

Micrel

MIC5248

150mA

碌

Cap CMOS LDO Regulator w/Power Good

Final Information

General Description

The MIC5248 is an efficient, precise CMOS voltage regulator

with power good output. The MIC5248 offers better than 3%

initial accuracy, and constant ground current (typically 100碌A)

over load.

The MIC5248 also works with low-ESR ceramic capacitors,

reducing the amount of board space necessary for power

applications, critical in handheld 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鈩?SOT-23-5

package, the MIC5248 is a fixed 1.2V regulator.

Features

鈥?/div>

Power Good indicator

Load independent, ultra-low ground current: 100碌A

150mA output current

Current limiting

Thermal shutdown

Tight load and line regulation

鈥淶ero鈥?off-mode current

Stability with low-ESR capacitors

Fast transient response

TTL-logic-controlled enable input

Applications

鈥?Processor power-up sequencing

鈥?Laptop, notebook, and palmtop computers

鈥?PCMCIA V

CC

and V

PP

regulation/switching

Ordering Information

Part Number

MIC5248-1.2BM5

MIC5248-1.2YM5

Marking

LV12

KV12

Voltage

1.2

Junction Temp. Range*

鈥?0擄C to +125擄C

鈥?0擄C to +125擄C,

Lead-free

Package

SOT-23-5

Other voltages available. Contact Micrel for details.

Typical Application

47k

V

IN

MIC5248-x.xBM5

1

2

Enable

Shutdown

3

4

5

V

OUT

C

OUT

PG

EN

EN (pin 3) may be

connected directly

to IN (pin 1).

Low-Noise Regulator Application

IttyBitty is a trademark of Micrel, Inc.

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

November 2002

1

MIC5248

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MIC5248 Datasheet

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