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MIC5333 Datasheet, PDF (1/12 Pages) Micrel Semiconductor – Micro-Power High Performance Dual 300mA ULDO™ with Dual POR | |||
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MIC5333
Micro-Power High Performance
Dual 300mA ULDO⢠with Dual POR
General Description
The MIC5333 is a tiny dual low quiescent current LDO
ideal for applications that are power sensitive. The
MIC5333 integrates two high performance, 300mA LDOs,
and a POR generator for each LDO into a 2.5mm x 2.5mm
Thin MLF® package, which occupies less PC board area
than a single SOT-23 package.
The MIC5333 is designed to reject input noise and provide
low output noise with fast transient response 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 MIC5333 is a µCap design, operating with very small
ceramic output capacitors, which reduces required board
space and component cost; and it is available in fixed
output voltages in the tiny 10-pin 2.5mm x 2.5mm Thin
MLF® leadless package.
Data sheets and support documentation can be found on
Micrelâs 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 for each LDO
⢠High PSRR â >65dB on each LDO
⢠Stable with 1µF ceramic output capacitors
⢠Tiny 10-pin 2.5mm x 2.5mm Thin MLF® package
⢠Ultra-low dropout voltage â 120mV @ 300mA
⢠Low output voltage noise â 50µVrms
⢠Thermal shutdown protection
⢠Current limit protection
Applications
⢠Camera phones
⢠Mobile phones
⢠PDAs
⢠GPS receivers
⢠Portable devices
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Typical Application
VBAT
MIC5333-xxYMT
100k 100k
VIN
VOUT1
I/O
EN1
VOUT2
CORE
EN2
POR1
CSET1 POR2
CSET2
1µF
GND
/RST I/O
/RST CORE
Camera DSP
1µF 1µF
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 +1 (408) 944-0800 ⢠fax + 1 (408) 474-1000 ⢠http://www.micrel.com
February 2008
M9999-021408-A
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