MIC5201 Micrel Semiconductor, MIC5201 Datasheet

MIC5201

Manufacturer Part Number

MIC5201

Description

200mA Low-Dropout Voltage Regulator

Manufacturer

Micrel Semiconductor

Datasheet

1.MIC5201.pdf (12 pages)

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Current page: 1 of 12
Download datasheet (133Kb)

General Description

The MIC5201 is an efficient linear voltage regulator with very

low dropout voltage (typically 17mV at light loads and 200mV

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

output), offering better than 1% initial accuracy with a logic

compatible on-off switching input.

Designed especially for hand-held battery powered devices,

the MIC5201 can be switched by a CMOS or TTL compatible

enable signal. This enable control may be connected directly

to V

drops nearly to zero. The ground current of the MIC5201

increases only slightly in dropout, further prolonging battery

life. Key MIC5201 features include current limiting,

overtemperature shutdown, and protection against reversed

battery.

The MIC5201 is available in several fixed voltages and

accuracy configurations. It features the same pinout as the

LT1121 with better performance. Other options are available;

contact Micrel for details.

Typical Application

MM8 is a trademark of Micrel, Inc.

July 1998

MIC5201

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

if unneeded. When disabled, power consumption

SHUTDOWN

ENABLE

Ordering Information

Other voltages available. Contact Micrel for details.

* Junction Temperature.

Part Number

MIC5201BM

MIC5201-3.0BM

MIC5201-3.3BM

MIC5201-5.0BM

MIC5201-3.0BS

MIC5201-3.3BS

MIC5201-4.8BS

MIC5201-5.0BS

MIC5201-3.3

GND

OUT

Features

• High output voltage accuracy

• Variety of output voltages

• Guaranteed 200mA output

• Low quiescent current

• Low dropout voltage

• Extremely tight load and line regulation

• Very low temperature coefficient

• Current and thermal limiting

• Reversed-battery protection

• Load-dump protection (fixed voltage versions)

• Zero off-mode current

• Logic-controlled electronic enable

• Available in SO-8 and SOT-223 packages

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

200mA Low-Dropout Voltage Regulator

Voltage Junction Temp. Range*

4.85

Adj

3.0

3.3

5.0

3.0

3.3

5.0

1µF

3.3V

OUT

and V

–40 C to +125 C

MIC5201

regulation/switching

Package

SOT-223

SO-8

MIC5201

Micrel

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