MIC5203-3.3BM5 Micrel Semiconductor, MIC5203-3.3BM5 Datasheet

MIC5203-3.3BM5

Manufacturer Part Number

MIC5203-3.3BM5

Description

Manufacturer

Micrel Semiconductor

Datasheets

1.MIC5203-5.0BM4.pdf (7 pages)

2.MIC5203-5.0BM4.pdf (7 pages)

Specifications of MIC5203-3.3BM5

Case

SOT23-5

Date_code

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

MIC5203-3.3BM5

Manufacturer:

MICREL

Quantity:

1 380

Company:

Meier Automation Equipment Co., Limited

Part Number:

MIC5203-3.3BM5

Manufacturer:

MIC

Quantity:

20 000

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MIC5203

General Description

The MIC5203 is a µCap 80mA linear voltage regulator with

very low dropout voltage (typically 20mV at light loads and

300mV at 80mA) and very low ground current (225µA at

20mA output), offering better than 3% initial accuracy with a

logic-compatible enable input.

The µCap regulator design is optimized to work with low-value,

low-cost ceramic capacitors. The outputs typically require

only 0.47µF of output capacitance for stability.

Designed especially for hand-held, battery-powered devices,

the MIC5203 can be controlled by a CMOS or TTL compat-

ible logic signal. When disabled, power consumption drops

nearly to zero. If on-off control is not required, the enable pin

may be tied to the input for 3-terminal operation. The ground

current of the MIC5203 increases only slightly in dropout,

further prolonging battery life. Key MIC5203 features include

current limiting, overtemperature shutdown, and protection

against reversed battery.

The MIC5203 is available in 2.8V, 3.0V, 3.3V, 3.6V, 3.8V,

4.0V, 4.5V, 4.75V, and 5.0V ﬁxed voltages. Other voltages

are available; contact Micrel for details.

Typical Applications

February 2006

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

Shutdow n

Enable

SOT-143 Version

L A x x

0.47µF

OUT

Features

• Tiny 4-lead and 5-lead surface-mount packages

• Wide Selection of output voltages

• Guaranteed 80mA output

• Low quiescent current

• Low dropout voltage

• Tight load and line regulation

• Low temperature coefﬁcient

• Current and thermal limiting

• Reversed input polarity protection

• Zero off-mode current

• Logic-controlled shutdown

• Stability with low-ESR ceramic capacitors

Applications

• Cellular telephones

• Laptop, notebook, and palmtop computers

• Battery-powered equipment

• Bar code scanners

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

• High-efﬁciency linear power supplies

Shutdown

Enable

µCap 80mA Low-Dropout Regulator

SOT-23-5 Version

MIC5203

0.47µF

Micrel, Inc.

MIC5203

OUT

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