EV2351DQ-00A
4.75V to 23V Input, 1.5A Output
Step-Down DC/DC Converter
The Future of Analog IC Technology
EVALUATION BOARD - INITIAL RELEASE
GENERAL DESCRIPTION
The EV2351DQ-00A is the Evaluation Board for
MPS’ MP2351 Step-Down DC/DC Converter. It
features a wide supply range of 4.75V to 23V
and a continuous output current up to 1.5A. The
output voltage is set to 3.3V, but can be easily
adjusted to other levels from 1.22V. A 1.4MHz
high switching frequency allows the use of
small, low cost capacitors and inductors.
Current mode control and an integrated power
MOSFET minimize component count, board area,
and solution cost. Fault condition protection
includes cycle-by-cycle current limiting, thermal
shutdown, and under-voltage lockout. Internal
soft-start reduces the turn-on stress. The small
10-pin QFN package minimizes board area.
FEATURES
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Up to 1.5A Output Current
Wide 4.75 to 23V Operating Input Range
Monolithic Buck with 180mΩ Internal FET
Fixed 1.4MHz Frequency
All Ceramic Input and Output Capacitors
Programmable Input Under-Voltage Lockout
Distributed Power Systems
Battery Chargers
DSL Modems
Pre-Regulators for Linear Regulators
APPLICATIONS
“MPS” and “The Future of Analog IC Technology”, are Registered Trademarks
of Monolithic Power Systems, Inc.
ELECTRICAL SPECIFICATIONS
Parameter
Supply Voltage
Output Voltage
Output Current
Symbol
V
IN
V
OUT
I
OUT
Value
4.75 – 23
5
0 – 1.5
Units
V
V
A
EV2351DQ-00A EVALUATION BOARD
Efficiency vs
Load Current
100
V
OUT
=5V
90
EFFICIENCY (%)
80
70
60
50
V
OUT
=2.5V
V
OUT
=3.3V
Dimensions (2.1”X x 1.3”Y x 0.4”Z)
Board Number
EV2351DQ-00A
MPS IC Number
MP2351
40
0
300 600 900 1200 1500
LOAD CURRENT (mA)
MP2351-EC01
EV2351DQ-00A Rev. 1.1
3/29/2005
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2005 MPS. All Rights Reserved.
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MPS [ MONOLITHIC POWER SYSTEMS ]
