MIC5322 Datasheet, PDF (1/9 Pages) Micrel Semiconductor – Dual, High Performance 150mA μCap ULDO™

MIC5322
Dual, High Performance 150mA
µCap ULDO™
General Description
The MIC5322 is a tiny Dual Ultra Low-Dropout
(ULDO™) linear regulator ideally suited for those
applications that require high Power Supply Rejection
Ratio (PSRR). It provides a bypass pin to increase
PSRR for noise sensitive portable electronics. The
MIC5322 integrates two high-performance; 150mA
ULDOs into a very compact 1.6mm x 1.6mm leadless
Thin MLF^® package with exceptional thermal package
characteristics.
The MIC5322 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, very high power supply
rejection, very low output noise and exceptional
thermal package characteristics makes it ideal for
powering RF applications, cellular phones, GPS,
imaging sensors for digital still cameras, PDAs, MP3
players and other portable applications.
The MIC5322 ULDO™ is available in fixed-output
voltages in a tiny 6-pin 1.6mm x 1.6mm leadless Thin
MLF^® package which is only 2.56mm² in area, - 30%
less area than the SOT-23, TSOP and MLF^® 3x3
packages. Additional voltage options are available.
For more information, contact Micrel marketing
department.
Data sheets and support 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 Thin MLF® leadless
package
• Bypass pin for improved noise performance
• High PSRR – >75dB on each LDO
• Ultra low noise output - > 30µVrms
• Dual 150mA outputs
• µCap stable with 1µF ceramic capacitor
• Low quiescent current – 150µA
• Fast turn-on time – 45µs
• Thermal shutdown protection
• Current Limit protection
Applications
• Mobile phones
• GPS receivers
• Portable media players
• Digital still and video cameras
• PDAs
• Portable electronics
Typical Application
MIC5322-x.xYMT
VIN VOUT 1
VOUT 2
EN
1µF
BYP
GND
0.01µF
RF
Core
1µF 1µF
GPS
Module
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 [phone] • fax + 1 [phone] • http://www.micrel.com
March 2008
M9999-030608-A