MIC5380/1

High Performance Dual 150mA LDO

1mm x 1mm Thin MLF

®

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

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

November 2008

M9999-110608-A

General Description

The MIC5380/1 is an advanced dual LDO ideal for

powering space constrained portable devices. The

MIC5380/1 provides two independently controlled, high

performance 150mA LDOs in an ultra small 1mm x 1mm

Thin MLF

Ideal for battery powered applications, the MIC5380/1

offers ±1% typical accuracy, low dropout voltage (155mV

at 150mA) and low ground current. The MIC5380/1 can

also be put into a zero-off-mode current state, drawing

virtually no current when disabled.

The MIC5380/1 offers fast transient response and high

PSRR while consuming minimal operating current. When

the MIC5381 is disabled an internal resistive load is

automatically applied to the output to discharge the output

capacitor.

The MIC5380/1 is available with fixed output voltages in a

lead-free (RoHS compliant) 6-pin 1mm x 1mm Thin MLF

®

package.

Data sheets and support documentation can be found on

Micrel’s web site at: www.micrel.com.

Features

• 2.5V to 5.5V input voltage range

• 150mA output current per LDO

• High output accuracy ±1% typical

• Low quiescent current 32µA per LDO

• Stable with 0402 1µF ceramic output capacitors

• Low dropout voltage 155mV at 150mA

• Output discharge circuit on MIC5381

• Independent enable pins

• Thermal shutdown protection

• Current limit protection

Applications

• Bluetooth headsets

• Mobile phones

• GPS, PMP, PDAs , DSCs

• USB thumb drive

• Medical handheld

• Portable handheld electronics

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Typical Application

MIC5380/1-xxYFT

VIN

EN1

EN2

1µF

1µF

VOUT1

VOUT2

1µF

VBAT

GND

I/O

VCORE

Camera DSP Power Supply Circuit