TM
MP2354
2A, 23V, 380KHz
Step-Down Converter
The Future of Analog IC Technology
TM
DESCRIPTION
The MP2354 is a monolithic step down switch
mode converter with a built in internal power
MOSFET. It achieves 2A continuous output
current over a wide input supply range with
excellent load and line regulation.
Current mode operation provides fast transient
response and eases loop stabilization.
Fault condition protection includes cycle-by-cycle
current limiting and thermal shutdown. In
shutdown mode the regulator draws 20µA of
supply current.
FEATURES
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0.18Ω Internal Power MOSFET Switch
Stable with Low ESR Output Ceramic
Capacitors
Up to 95% Efficiency
2A Output Current
Wide 4.75V to 23V Operating Input Range
Fixed 380KHz Frequency
Thermal Shutdown
Cycle-by-Cycle Over Current Protection
Programmable Under Voltage Lockout
Frequency Synchronization Input
Operating Temperature: –40°C to +85°C
Available in an 8-Pin SO Package
Distributed Power Systems
Battery Chargers
Pre-Regulator for Linear Regulators
EVALUATION BOARD REFERENCE
Board Number
EV2354DS-00A
Dimensions
2.3”X x 1.4”Y x 0.5”Z
APPLICATIONS
“MPS” and “The Future of Analog IC Technology” are Trademarks of Monolithic
Power Systems, Inc.
TYPICAL APPLICATION
INPUT
4.75V to 23V
3
2
Efficiency vs
Output Current
10nF
VIN
RUN
BST
LX
95
90
EFFICIENCY (%)
OPEN
AUTOMATIC
STARTUP
OPEN
IF NOT USED
5.0V
3.3V
2.5V
8
1
4
6
MP2354
SYNC
GND
5
FB
COMP
7
B230A
OUTPUT
3.3V / 2A
85
80
75
70
65
60
0
0.5
1.0
1.5
3.3nF
2.0
2.5
MP2354_TAC_S01
OUTPUT CURRENT (A)
MP2354_TAC_EC01
MP2354 Rev. 1.4
1/6/2006
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2006 MPS. All Rights Reserved.
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MPS [ MONOLITHIC POWER SYSTEMS ]
