MIC5320 Datasheet, PDF (1/13 Pages) Micrel Semiconductor – Dual, High Performance 150mA uCap ULDO

MIC5320
Dual, High Performance 150mA µCap ULDO™
General Description
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.
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.
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.
Data sheets and supporting documentation can be
found on Micrel’s web site at www.micrel.com.
Features
• 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
• 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
• Thermal shutdown protection
• Current limit protection
Applications
• Mobile phones
• PDAs
• GPS receivers
• Portable electronics
• Portable media players
• Digital still and video cameras
Typical Application
MIC5320-x.xYML
VIN VOUT 1
Rx/Synth
EN 1 VOUT 2
Tx
EN 2
1µF
GND
RF
1µF 1µF Transceiver
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 [phone] • fax + 1 [phone] • http://www.micrel.com
July 2006
M9999-073106