MIC35302

3A, Low Voltage µCap LDO Regulator

**See Thermal Design Section

Super βeta PNP is a registered trademark of Micrel, Inc.

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

October 2009

M9999-102309-A

General Description

The MIC35302 is a 3A low-dropout linear voltage regulator

that provides a low voltage, high current output with a

minimum of external components. It offers high precision,

ultra-low dropout (600mV over temperature), and low

ground current.

The MIC35302 operates from an input of 2.25V to 6.0V. It

is designed to drive digital circuits requiring low voltage at

high currents (i.e., PLDs, DSPs, micro-controllers, etc.),

providing an adjustable output voltage from 1.24V to 5.4V.

Features of the MIC35302 LDO include current limiting

and thermal protection, and reverse current and reverse

battery protection. Also logic (active-HIGH) enable pin is

included. The MIC35302 is available in a 5-pin power

D-Pak package (TO-252) with an operating temperature

range of –40

°C to +125°C.

Data sheets and support documentation can be found on

Micrel’s web site at www.micrel.com.

Features

• 3A minimum guaranteed output current

• 600mV maximum dropout voltage over temperature

–

Ideal for 3.0V to 2.5V conversion

–

Ideal for 2.5V to 1.8V, 1.65V, or 1.5V conversion

• Stable with ceramic or tantalum capacitor

• Wide input voltage range

–

• ±1.0% initial output tolerance

• Excellent line and load regulation specifications

• Logic controlled shutdown

• Thermal shutdown and current limit protection

• Reverse-leakage protection

• –40°C to +125°C junction temperature

• Power D-Pak package (TO-252)

Applications

• LDO linear regulator for low-voltage digital IC

• PC add-in cards

• High efficiency linear power supplies

• SMPS post regulator

• Battery charger

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Typical Application**

Adjustable Regulator Application

(*See Minimum Load Current Section)