TM
MP2361
2A, 23V, 1.4MHz
Step-Down Converter
The Future of Analog IC Technology
TM
DESCRIPTION
The MP2361 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 protections include cycle-by-cycle
current limiting and thermal shutdown. In
shutdown mode the regulator draws 20µA of
supply
current.
Programmable
soft-start
minimizes the inrush supply current and the
output overshoot at initial startup.
The MP2361 requires a minimum number of
readily available standard external components.
FEATURES
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2A Output Current with QFN Package
0.18Ω Internal Power MOSFET Switch
Stable with Low ESR Output Ceramic
Capacitors
90% Efficiency
20µA Shutdown Mode
Fixed 1.4MHz Frequency
Thermal Shutdown
Cycle-by-Cycle Over Current Protection
Wide 4.75V to 23V Operating Input Range
Output Adjustable from 0.92V to 16V
Programmable Under Voltage Lockout
Available in 10-pin QFN (3mm x 3mm) and
Tiny MSOP Packages
Evaluation Board Available
Distributed Power Systems
Battery Charger
DSL Modems
Pre-Regulator for Linear Regulators
EVALUATION BOARD REFERENCE
Board Number
EV2361DQ-00A
Dimensions
2.3”X x 1.5”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
4
9
10
IN
EN
2
BS
SW
C5
10nF
5
7
Efficiency vs
Load Current
100
90
EFFICIENCY (%)
V
OUT
=5V
MP2361
SS
GND
6
FB
COMP
8
D1
B220A
V
OUT
2.5V/2A
80
V
OUT
=2.5V
70
60
50
V
OUT
=3.3V
C4
10nF
C6
OPEN
C3
1.8nF
0
MP2361_TAC_S01
0.5
1.0
1.5
LOAD CURRENT (A)
2.0
MP2361-EC01
MP2361 Rev. 1.2
1/11/2006
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2006 MPS. All Rights Reserved.
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