MP2205A Datasheet, PDF (1/14 Pages) Monolithic Power Systems – 16V, 2.5A, 1.3MHz Synchronous Step-Down Converter

The Future of Analog IC Technology
DESCRIPTION
The MP2205A is an internally compensated
1.3MHz fixed frequency PWM synchronous
step-down regulator with a 3V to 6V bias supply
(V_CC). MP2205A operates from a 3V to 16V
input and generates an adjustable output
voltage from 0.8V to 0.9xV_IN at up to 2.5A load
current.
The MP2205A integrates an 80mΩ high-side
switch and an 80mΩ synchronous rectifier for
high efficiency without an external Schottky
diode. With peak current mode control and
internal compensation, it is stable with a output
ceramic capacitor and a small inductor. Fault
protection includes hiccup short-circuit
protection, cycle-by-cycle current limiting and
thermal shutdown. Other features include
frequency synchronization and internal soft-
start.
The MP2205A is available in a small 3mm x
4mm 14-lead QFN packages.
MP2205A
16V, 2.5A, 1.3MHz Synchronous
Step-Down Converter
FEATURES
• 2.5A Output Current
• Input Supply Range: 3V to 16V
• 80mΩ Internal Power MOSFET Switches
• All Ceramic Output Capacitors Design
• Up to 95% Efficiency
• 1.3MHz Fixed Switching Frequency
• Adjustable Output from 0.8V to 0.9xV_IN
• Internal Soft-Start
• Power Good Pin
• Frequency Synchronization Input
• Thermal Shutdown
• Cycle-by-Cycle Current Limiting
• Hiccup Short Circuit Protection
• 14-Lead, 3mm x 4mm 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 Trademarks of Monolithic
Power Systems, Inc.
TYPICAL APPLICATION
V_IN
3V to 16V
V_CC
3V to 6V
OFF ON
C1
33uF
C4
1uF
5,10
7
IN
8
VCC
BS
SW
4,11
MP2205A
13 ^EN/SYNC
POK
9
GND
FB
14
1,3,12
C3
100nF
L1
1uH
C6
560PF
V_OUT
1.8V / 2.5A
C2
47uF
MP2205A Rev. 0.9
www.MonolithicPower.com
1
9/1/2010
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