MIC5310
Dual, 150mA µCap LDO in 2mm x 2mm MLF®
General Description
Features
The MIC5310 is a tiny Dual Ultra Low-Dropout
(ULDO™) linear regulator ideally suited for portable
electronics due to its high power supply ripple
rejection (PSRR) and ultra low output noise. The
MIC5310 integrates two high-performance; 150mA
ULDOs into a tiny 2mm x 2mm leadless MLF®
package, which provides exceptional thermal package
characteristics.
• 2.3V to 5.5V input voltage range
• Ultra-low dropout voltage ULDO™ 35mV @ 150mA
• High PSRR - >70dB @ 1KHz
• Ultra-low output noise: 30µVRMS
• ±2% initial output accuracy
• Tiny 8-pin 2mm x 2mm MLF® leadless package
• Excellent Load/Line transient response
• Fast start-up time: 30µs
The MIC5310 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 RF/noise sensitive circuitry, cellular
phone camera modules, imaging sensors for digital
still cameras, PDAs, MP3 players and WebCam
applications
• µCap stable with 1µF ceramic capacitor
• Thermal shutdown protection
• Low quiescent current: 75µA per output
• Current limit protection
Applications
• Mobile phones
The MIC5310 ULDO™ is available in fixed-output
voltages in the tiny 8-pin 2mm x 2mm leadless MLF®
package which occupies less than half the board area
of a single SOT-6 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 support documentation can be found
on Micrel’s web site at www.micrel.com.
Typical Application
MIC5310-x.xYML
Rx/Synth
Tx
VIN
VOUT 1
VOUT 2
EN 1
EN 2
BYP
RF
Transceiver
1µF
GND
1µF
1µF
0.1µF
RF Power Supply Circuit
ULDO is a trademark of Micrel, Inc.
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 • http://www.micrel.com
M9999-082407-B
August 2007