MIC5333
Micro-Power High Performance
Dual 300mA ULDO with Dual POR
General Description Features
The MIC5333 is a tiny dual low quiescent current LDO
2.3V to 5.5V input voltage range
ideal for applications that are power sensitive. The
300mA output current per LDO
MIC5333 integrates two high performance, 300mA LDOs,
Very low quiescent current: 25A per LDO
and a POR generator for each LDO into a 2.5mm x 2.5mm
POR output with programmable delay for each LDO
Thin MLF package, which occupies less PC board area
than a single SOT-23 package. High PSRR >65dB on each LDO
The MIC5333 is designed to reject input noise and provide Stable with 1F ceramic output capacitors
low output noise with fast transient response to respond to
Tiny 10-pin 2.5mm x 2.5mm Thin MLF package
any load change quickly even though it is a low quiescent
Ultra-low dropout voltage 120mV @ 300mA
current part. This combination of PSRR, low noise and
Low output voltage noise 50Vrms
transient response along with low power consumption
Thermal shutdown protection
makes for a very high performance, yet general purpose
product.
Current limit protection
The MIC5333 is a Cap design, operating with very small
ceramic output capacitors, which reduces required board
Applications
space and component cost; and it is available in fixed
output voltages in the tiny 10-pin 2.5mm x 2.5mm Thin Camera phones
MLF leadless package.
Mobile phones
Data sheets and support documentation can be found on
PDAs
Micrels web site at: www.micrel.com.
GPS receivers
Portable devices
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Typical Application
100k 100k
MIC5333-xxYMT
VOUT1
VIN I/O
CORE
EN1 VOUT2
/RST
EN2 POR1
I/O
VBAT
POR2 /RST
CSET1
CORE
CSET2
Camera DSP
1F 1F
1F
GND
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 Micrel, Inc. MIC5333
Ordering Information
Manufacturing Junction
Part Number Marking Voltage Package
Part Number Temperature Range
MIC5333-2.5/1.2YMT MIC5333-J4YMT XJ4 2.5V/1.2V 40 to +125C 10-Pin 2.5 x 2.5 Thin MLF
MIC5333-2.8/2.8YMT MIC5333-MMYMT XMM 2.8V/2.8V 40 to +125C 10-Pin 2.5 x 2.5 Thin MLF
MIC5333-2.8/2.85YMT MIC5333-MNYMT XMN 2.8V/2.85V 40 to +125C 10-Pin 2.5 x 2.5 Thin MLF
MIC5333-2.85/2.85YMT MIC5333-NNYMT XNN 2.85V/2.85V 40 to +125C 10-Pin 2.5 x 2.5 Thin MLF
MIC5333-3.0/2.8YMT MIC5333-PMYMT XPM 3.0V/2.8V 40 to +125C 10-Pin 2.5 x 2.5 Thin MLF
MIC5333-3.0/2.85YMT MIC5333-PNYMT XPN 3.0V/2.85V 40 to +125C 10-Pin 2.5 x 2.5 Thin MLF
MIC5333-3.0/3.0YMT MIC5333-PPYMT XPP 3.0V/3.0V 40 to +125C 10-Pin 2.5 x 2.5 Thin MLF
Note: Other voltage options available. Contact Micrel for details.
Pin Configuration
VIN 1 10 VOUT1
GND 2 9 VOUT2
POR2 3 8 CSET2
POR1 4 7 CSET1
EN2 5 6 EN1
10-Pin 2.5mm x 2.5mm Thin MLF (MT)
(Top View)
Pin Description
Pin Number Pin Name Pin Function
1 VIN Supply Input.
2 GND Ground.
3 POR2 Power-On Reset Output (Regulator 2): Open-drain output. Active low indicates
an output under-voltage condition on regulator 2 when the device is enabled.
4 POR1 Power-On Reset Output (Regulator 1): Open-drain output. Active low indicates
an output under-voltage condition on regulator 1 when the device is enabled.
5 EN2 Enable Input (Regulator 2): Active High Input. Logic High = On; Logic Low =
Off. Do not leave floating.
6 EN1 Enable Input (Regulator 1): Active High Input. Logic High = On; Logic Low =
Off. Do not leave floating.
7 CSET1 Delay Set Input (Regulator 1): Connect external capacitor to GND to set the
internal delay for the POR1 output. When left open, there is no delay. This pin
cannot be grounded.
8 CSET2 Delay Set Input (Regulator 2): Connect external capacitor to GND to set the
internal delay for the POR2 output. When left open, there is no delay. This pin
cannot be grounded.
9 VOUT2 Regulator Output LDO2.
10 VOUT1 Regulator Output LDO1.
M9999-021408-A
February 2008 2