June 2000

1

MIC5213

MIC5213

Micrel

General Description

The MIC5213 is a

µCap 80mA linear voltage regulator in the

Teeny™ SC-70 package. Featuring half the footprint of the

standard SOT-23 package, this Teeny SC-70 regulator has

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

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

µA at

20mA output). It also offers better than 3% initial accuracy

and includes 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 0.47

µF of output capacitance for stability.

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

the MIC5213 can be controlled by a CMOS or TTL compatible

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 MIC5213 increases only slightly in dropout, further

prolonging battery life. Key MIC5213 features include current

limiting, overtemperature shutdown, and protection against

reversed battery.

The MIC5213 is available in 2.5V, 2.8V, 3.0V, 3.3V, and 3.6V

fixed voltages. Other voltages are available; contact Micrel

for details.

Typical Applications

15

2

34

0.47µF

Enable

Shutdown

Regulator Circuit

Ordering Information

Part Number

Marking

Voltage

Junction Temp. Range

Package

MIC5213-2.5BC5

LAM

2.5V

–40

°C to +125°C

SC-70-5

MIC5213-2.8BC5

LAJ

2.8V

–40

°C to +125°C

SC-70-5

MIC5213-3.0BC5

LAG

3.0V

–40

°C to +125°C

SC-70-5

MIC5213-3.3BC5

LAE

3.3V

–40

°C to +125°C

SC-70-5

MIC5213-3.6BC5

LAD

3.6V

–40

°C to +125°C

SC-70-5

Other voltages available. Contact Micrel for details.

Features

• Teeny™ SC-70 package

• 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

MIC5213

Teeny™ SC-70

Advance Information

Teeny 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