MIC5304

Single 150mA Low Operating Current

LDO with Dual Voltage Pin Select

MLF and MicroLeadFrame are registered trademarks of Amkor Technology, Inc.

Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (

November 2008

M9999-111908-A

General Description

The MIC5304 is a low quiescent current, low dropout

regulator with selectable output voltage designed for

applications that require two levels of output voltage

regulation. The MIC5304 is an ideal solution for

programming memory cards as well as for conserving

power in portable applications. The MIC5304 is capable of

sourcing 150mA of output current while only consuming

24µA of operating current. This high performance LDO

offers fast transient response while still maintaining low

quiescent current levels.

The MIC5304 is an ideal solution for battery operated

applications due to ultra low operating current and

extremely low dropout voltage of 85mV at 150mA.

Equipped with a TTL logic compatible enable pin, the

MIC5304 can be put into a zero-off mode current state,

drawing virtually no current when disabled.

Board space and component cost is minimized because

the MIC5304 operates with very small 1μF ceramic

capacitors. The MIC5304 provides fixed output voltages,

and is available in the tiny 1.6mm x 1.6mm Thin MLF

®

package ideal for portable electronics.

MIC5304 also features thermal shutdown and current limit

protection.

Data sheets and support documentation can be found on

Micrel’s web site at: www.micrel.com.

Features

• 150mA output current

• Logic controlled selectable output voltage

• Fast transition time between selected output voltages

• Input voltage range: 2.3V to 5.5V

• Low 24µA operating current

• Stable with 1μF ceramic capacitors

• Low dropout voltage of 85mV @ 150mA

• Thermal shutdown and current limit protection

Applications

• Mobile phones, PDAs, PMPs, PNDs

• Digital still and video cameras

• Dual voltage levels for power saving mode

• Portable electronics

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Typical Application

MIC5304-RGYMT

VIN

VEN

VSEL

1µF

3.2V/1.8V

1µF

VOUT

GND

Selectable Output Voltage LDO Application