MIC5313 Datasheet, PDF (1/12 Pages) Micrel Semiconductor – Low Voltage Dual 300mA LDO

MIC5313
Low Voltage Dual 300mA LDO
General Description
The MIC5313 is a high performance, dual low input
voltage, low dropout regulator. Major features include two
300mA LDOs, input voltage down to 1.7V, ultra low drop
out of 85mV at full load. Each LDO has its own low voltage
input for system flexibility. The low input voltages and low
drop out operation provides high efficiency by reducing the
input to output voltage step which minimizes the regulator
power loss.
Ideal for battery operated applications; the MIC5313 offers
1% accuracy and low ground current to increase light load
efficiency. The MIC5313 can also be put into a zero-off-
mode current state, drawing virtually no current when
disabled.
The MIC5313 is available in fixed output voltages in the
10-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
• 300mA output current for each LDO
• Dual low voltage regulator inputs: 1.7V to 5.5V
• Low output voltage range: 0.8V to 2.0V
• Ultra-low dropout voltage of 85mV @ 300mA
• Stable with 1µF ceramic output capacitors
• Very fast transient response
• Thermal shutdown and current limit protection
• Tiny 10-pin 2mm x 2mm Thin MLF^® package
Applications
• Mobile Phones
• GPS and Navigation Devices
• Portable Media Players
• Digital still and video cameras
• PDAs
• Portable electronics
___________________________________________________________________________________________________________
Typical Application
VBAT
MIC23031-1.8YMT
DC-to-DC
Converter
CIN
CBIAS
1µF
1µF
MIC5313-xxYMT
VIN1
VOUT1
VIN2
VBIAS
VOUT2
EN1
EN2
CBYP
GND
1µF
10nF
VI/O
VCORE1
VCORE2
1µF
µProcessor
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
July 2008
M9999-070208-A