MIC5313
Low Voltage Dual 300mA LDO
General Description
Features
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.
• 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
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.
Applications
• Mobile Phones
The MIC5313 is available in fixed output voltages in the
10-pin 2mm x 2mm Thin MLF® leadless package.
• GPS and Navigation Devices
• Portable Media Players
• Digital still and video cameras
• PDAs
Data sheets and support documentation can be found on
Micrel’s web site at: www.micrel.com.
• Portable electronics
___________________________________________________________________________________________________________
Typical Application
VI/O
MIC5313-xxYMT
MIC23031-1.8YMT
VBAT
DC-to-DC
Converter
VIN1
VOUT1
VCORE1
VCORE2
VIN2
VBIAS
VOUT2
CBYP
CIN
1µF
CBIAS
1µF
EN1
EN2
1µF
1µF
10nF
µProcessor
GND
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
M9999-070208-A
July 2008