MIC5370/1
High-Performance Dual 150mA LDO
1.6mm x 1.6mm Thin MLF
General Description Features
The MIC5370/1 is an advanced dual LDO ideal for
2.5V to 5.5V input voltage range
powering general purpose portable devices. The
Two 150mA output current LDOs
MIC5370/1 provides two independently-controlled, high-
High output accuracy
performance 150mA LDOs in a tiny 1.6mm x 1.6mm Thin
2% initial accuracy
MLF package.
Low quiescent current 32A per LDO
Ideal for battery-powered applications, the MIC5370/1
Stable with 1F ceramic output capacitors
offers 2% initial accuracy, low dropout voltage (155mV @
150mA) and low ground current (typically 32A per LDO).
Independent enable pins
The MIC5370/1 can also be put into a zero-off-mode
Low dropout voltage 155mV at 150mA
current state, drawing virtually no current when disabled.
Thermal-shutdown protection
When the MIC5371 is disabled an internal resistive load is
Current-limit protection
automatically applied to the output to discharge the output
Output discharge circuit MIC5371
capacitor. This LDO offers fast transient response and
high PSRR while consuming a minimum operating current.
6-pin 1.6mm x 1.6mm Thin MLF package
The MIC5370/1 is available in fixed output voltages in a
lead-free (RoHS-compliant) 6-pin 1.6mm x 1.6mm Thin
Applications
MLF package.
Camera phones
Data sheets and support documentation can be found on
Mobile phones
Micrels web site at: www.micrel.com.
GPS, PMP, PDAs and handhelds
Portable electronics
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Typical Application
MIC5370/1-xxYMT
I/O
VIN VOUT1
VCORE
EN1 VOUT2
1F
1F 1F
VBAT
EN2
GND
Camera DSP Power Supply Circuit
MLF and MicroLeadFrame are registered trademarks of Amkor Technology, Inc.
Micrel Inc. 2180 Fortune Drive San Jose, CA 95131 USA tel +1 (408) 944-0800 fax + 1 (408) 474-1000 Micrel, Inc. MIC5370/1
Block Diagrams
VOUT1
VIN
LDO1
VOUT2
LDO2
EN1
ENABLE
EN2
REFERENCE
GND
MIC5370 Block Diagram
VIN VOUT1
LDO1
VOUT2
LDO2
EN1
ENABLE
EN2
AUTO
DISCHARGE
REFERENCE
GND
MIC5371 Block Diagram
M9999-052011-C
May 2011 2