MP38115 Datasheet, PDF (1/10 Pages) Monolithic Power Systems – Ultra Low Voltage, 4A, 5.5V Synchronous Step-Down Switching Regulator

The Future of Analog IC Technology
MP38115
Ultra Low Voltage, 4A, 5.5V Synchronous
Step-Down Switching Regulator
DESCRIPTION
The MP38115 is an internally compensated
1.5MHz fixed frequency PWM synchronous
step-down regulator. MP38115 operates from a
1.1V to 5.5V input and generates an output
voltage as low as 0.8V.
The MP38115 integrates a 60mΩ high-side
switch and a 60mΩ synchronous rectifier for
high efficiency without an external Schottky
diode. With peak current mode control and
internal compensation, the MP38115 based
solution delivers a very compact footprint with a
minimum component count.
The MP38115 is available in a small 3mm x
3mm 10-lead QFN package.
FEATURES
• 4A Output Current
• Input Operation Range: 1.1V to 5.5V
• 60mΩ Internal Power MOSFET Switches
• All Ceramic Capacitor Design
• Up to 95% Efficiency
• 1.5MHz Fixed Switching Frequency
• Adjustable Output from 0.8V to 0.9xV_IN
• Internal Soft-Start
• Frequency Synchronization Input
• Power Good Output
• Cycle-by-Cycle Current Limiting
• Hiccup Short Circuit Protection
• Thermal Shutdown
• 3mm x 3mm 10-lead QFN Package
APPLICATIONS
• µP/ASIC/DSP/FPGA Core and I/O Supplies
• Printers and LCD TVs
• Network and Telecom Equipment
• Point of Load Regulators
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
TYPICAL APPLICATION
V_IN
1.1V to 5.5V
V_CC
2.7V to 5.5V
OFF ON
IN
VCC
BS
SW
MP38115
EN/SYNC
FB
GND
V_OUT
1.1V / 4A
MP38115 Rev. 0.92
www.MonolithicPower.com
1
8/11/2009
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