MIC5332 Datasheet, PDF (1/12 Pages) Micrel Semiconductor – Micro-Power High Performance Dual 300mA ULDO™

MIC5332
Micro-Power High Performance
Dual 300mA ULDO™
General Description
The MIC5332 is a tiny dual low quiescent current LDO
ideal for applications that are power sensitive. The
MIC5332 integrates two high performance 300mA LDOs,
and a POR generator into a 2mm x 2mm Thin MLF^®
package. This solution occupies the same PC board area
of a single SOT-23 package.
The MIC5332 is designed to reject input noise and provide
low output noise with fast transient response so as to
respond to any load change quickly even though it is a low
quiescent current part. This combination of PSRR, low
noise and transient response, along with low power
consumption makes for a very high performance, yet
general purpose product.
The MIC5332 is a µCap design, operating with very small
ceramic output capacitors, which reduces required board
space and component cost. It is available in fixed output
voltages in a tiny 8-pin 2mm x 2mm Thin MLF^® leadless
package.
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
• 300mA output current per LDO
• Very low quiescent current: 25µA per LDO
• POR output with programmable delay on LDO2
• High PSRR - >65dB on each LDO
• Stable with 1µF ceramic output capacitors
• Tiny 8-pin 2mm x 2mm Thin MLF^® package
• Ultra-low dropout voltage – 120mV @ 300mA
• Low output voltage noise – 50µVrms
• Thermal shutdown protection
• Current limit protection
Applications
• Camera phones
• Mobile phones
• PDAs
• GPS receivers
• Portable devices
___________________________________________________________________________________________________________
Typical Application
VBAT
CIN
1µF
MIC5332-xxYMT
VIN
VOUT1
EN1
VOUT2
EN2
CSET2 POR2
GND
10k
VI/O
VCORE
/RST
1µF 1µF
µProcessor
Camera DSP 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
January 2007
M9999-011608-A