MIC5388/9

Dual 200mA Peak LDO

in Wafer Level Chip Scale Package

General Description

The MIC5388/9 is an advanced dual LDO ideal for

powering

general

purpose

portable

devices.

The

MIC5388/9 provides two independently-controlled, high-

performance, 200mA peak (150mA continuous) LDOs in a

miniature 6-bump, 0.5mm pitch, 1.5mm

× 1.0mm wafer

level chip scale package (WLCSP).

Ideal for battery-powered applications, the MIC5388/9

offers 2% accuracy, low dropout voltage (175mV @

150mA) and low ground current (typically 32μA per LDO).

The MIC5388/9 can also be put into a zero off mode

current state, drawing virtually no current when disabled.

When the MIC5389 is disabled an internal resistive load is

automatically applied to the output to discharge the output

capacitor. This LDO offers fast transient response and

high PSRR while consuming a minimum operating current.

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

• Two 200mA peak output current LDOs

• High output accuracy (±2%)

• Low quiescent current (32µA per LDO)

• Stable with 1µF ceramic output capacitors

• Low dropout voltage (175mV at 150mA)

• Independent enable pins

• Output discharge circuit (MIC5389)

• Thermal-shutdown protection

• Current-limit protection

• 6-bump 1.5mm × 1.0mm WLCSP package

Applications

• Camera phones

• Mobile phones

• DSC, GPS, PMP, and PDAs

• Portable medical devices

• Portable electronics

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Typical Application

Camera Module Power Supply

July 2011

M9999-071211-A