MIC5388/9
Dual 200mA Peak LDO
in Wafer Level Chip Scale Package
General Description Features
The MIC5388/9 is an advanced dual LDO ideal for
2.5V to 5.5V input voltage range
powering general purpose portable devices. The
Two 200mA peak output current LDOs
MIC5388/9 provides two independently-controlled, high-
High output accuracy (2%)
performance, 200mA peak (150mA continuous) LDOs in a
Low quiescent current (32A per LDO)
miniature 6-bump, 0.5mm pitch, 1.5mm 1.0mm wafer
Stable with 1F ceramic output capacitors
level chip scale package (WLCSP).
Low dropout voltage (175mV at 150mA)
Ideal for battery-powered applications, the MIC5388/9
offers 2% accuracy, low dropout voltage (175mV @
Independent enable pins
150mA) and low ground current (typically 32A per LDO).
Output discharge circuit (MIC5389)
The MIC5388/9 can also be put into a zero off mode
Thermal-shutdown protection
current state, drawing virtually no current when disabled.
Current-limit protection
When the MIC5389 is disabled an internal resistive load is
6-bump 1.5mm 1.0mm WLCSP package
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.
Applications
Data sheets and support documentation can be found on
Camera phones
Micrels web site at www.micrel.com.
Mobile phones
DSC, GPS, PMP, and PDAs
Portable medical devices
Portable electronics
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Typical Application
Camera Module Power Supply
Micrel Inc. 2180 Fortune Drive San Jose, CA 95131 USA tel +1 (408) 944-0800 fax + 1 (408) 474-1000 Micrel, Inc. MIC5388/9
Ordering Information
Junction
Voltage
(1, 2)
Manufacturing Part Number Marking Code Temperature Package
V /V
OUT1 OUT2
Range
MIC5388-SGYCS* 8A8 3.3V/1.8V 40 to +125C 6-Bump Wafer Level Chip Scale Package
MIC5388-MMYCS* 8B8 2.8V/2.8V 40 to +125C 6-Bump Wafer Level Chip Scale Package
MIC5388-MLYCS* 8C8 2.8V/2.7V 40 to +125C 6-Bump Wafer Level Chip Scale Package
MIC5388-MGYCS 8D8 2.8V/1.8V 40 to +125C 6-Bump Wafer Level Chip Scale Package
MIC5388-M4YCS*
8E8 2.8V/1.2V 40 to +125C 6-Bump Wafer Level Chip Scale Package
MIC5388-G4YCS* 8F8 1.8V/1.2V 40 to +125C 6-Bump Wafer Level Chip Scale Package
MIC5389-SGYCS* 8A9 3.3V/2.8V 40 to +125C 6-Bump Wafer Level Chip Scale Package
MIC5389-MMYCS* 8B9 2.8V/2.8V 40 to +125C 6-Bump Wafer Level Chip Scale Package
MIC5389-MLYCS* 8C9 2.8V/2.7V 40 to +125C 6-Bump Wafer Level Chip Scale Package
MIC5389-MGYCS 8D9 2.8V/1.8V 40 to +125C 6-Bump Wafer Level Chip Scale Package
MIC5389-M4YCS* 8E9 2.8V/1.2V 40 to +125C 6-Bump Wafer Level Chip Scale Package
MIC5389-G4YCS*
8F9 1.8V/1.2V 40 to +125C 6-Bump Wafer Level Chip Scale Package
Notes:
1. Other voltages available. Contact Micrel Marketing for details.
2. MIC5389 offers auto-discharge function.
* Contact Micrel Marketing for availability.
Pin Configuration
Ball A1 Identifier TOP VIEW BOTTOM VIEW
6-Bump, 0.5mm Pitch WLCSP (CS)
Pin Description
Pin Number Pin Name Pin Function
A1 EN1 Enable Regulator 1. Active High Input. Logic High = On; Logic Low = Off. Do not leave floating.
B1 GND Ground.
C1 EN2 Enable Regulator 2. Active High Input. Logic High = On; Logic Low = Off. Do not leave floating.
C2 VOUT2 Regulator Output LDO2
B2 VIN Voltage Supply Input.
A2 VOUT1 Regulator Output LDO1
M9999-071211-A
July 2011 2