MP2205A
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.
FEATURES
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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
µP/ASIC/DSP/FPGA Core and I/O Supplies
Printers and LCD TVs
Network and Telecom Equipment
Point of Load Regulators
APPLICATIONS
“MPS” and “The Future of Analog IC Technology” are Trademarks of Monolithic
Power Systems, Inc.
TYPICAL APPLICATION
V
IN
3V to 16V
C1
33uF
8
C4
1uF
13
9
5,10
IN
VCC
7
BS
SW
V
CC
3V to 6V
C3
100nF
4,11
L1
1uH
V
OUT
1.8V / 2.5A
MP2205A
EN/SYNC
POK
GND
FB
C6
560PF
14
OFF ON
C2
47uF
1,3,12
MP2205A Rev. 0.9
9/1/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
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