MIC5320
Dual, High Performance 150mA µCap ULDO™
General Description
Features
The MIC5320 is a tiny Dual Ultra Low-Dropout
(ULDO™) linear regulator ideally suited for portable
electronics. It is ideal for general purpose/ digital
applications which require high power supply ripple
rejection (PSRR) >65dB, eliminating the need for a
bypass capacitor and providing two enable pins for
maximum flexibility. The MIC5320 integrates two high-
performance; 150mA ULDOs into a tiny 6-pin 1.6mm x
1.6mm leadless MLF® package, which provides
exceptional thermal package characteristics.
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2.3V to 5.5V input voltage range
Ultra-low dropout voltage ULDO™ 35mV @
150mA
Tiny 6-pin 1.6mm x 1.6mm MLF® leadless
package
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Low cost TSOT-23-6 package
Independent enable pins
PSRR – >65dB on each LDO
150mA output current per LDO
µCap stable with 1µF ceramic capacitor
Low quiescent current – 85µA per output
Fast turn-on time – 30µs
The MIC5320 is a µCap design which enables
operation with very small ceramic output capacitors
for stability, thereby reducing required board space
and component cost. The combination of extremely
low-drop-out voltage, high power supply rejection and
exceptional thermal package characteristics makes it
ideal for powering cellular phone camera modules,
imaging sensors for digital still cameras, PDAs, MP3
players and WebCam applications.
Thermal shutdown protection
Current limit protection
Applications
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Mobile phones
The MIC5320 ULDO™ is available in fixed-output
voltages in the tiny 6-pin 1.6mm x 1.6mm leadless
MLF® package which is only 2.56mm2 in area, less
than 30% the area of the SOT-23, TSOP and MLF®
3x3 packages. It’s also available in the thin SOT-23-6
lead package. Additional voltage options are
available. For more information, contact Micrel
marketing department.
PDAs
GPS receivers
Portable electronics
Portable media players
Digital still and video cameras
Data sheets and supporting documentation can be
found on Micrel’s web site at www.micrel.com.
Typical Application
MIC5320-x.xYML
Rx/Synth
Tx
VIN
VOUT 1
VOUT 2
EN 1
EN 2
1µF
RF
Transceiver
GND
1µF
1µF
RF Power Supply Circuit
ULDO is a trademark of Micrel, Inc.
MLF and MicroLeadFrame are registered trademarks of Amkor Technologies, Inc.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
M9999-073106
July 2006