MP2365
3A, 28V, 1.4MHz
Step-Down Converter
The Future of Analog IC Technology
DESCRIPTION
The MP2365 is a 1.4MHz step-down regulator
with a built-in Power MOSFET. It achieves 3A
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.
Adjustable soft-start reduces the stress on the
input source at turn-on. In shutdown mode the
regulator draws 20µA of supply current.
The MP2365 is available in an 8-pin SOIC
package with an exposed pad, and requires a
minimum number of readily available external
components to complete a 3A step-down DC to
DC converter solution.
FEATURES
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3A Continuous Output Current, 4A Peak
Output Current
Programmable Soft-Start
100mΩ Internal Power MOSFET Switch
Stable with Low ESR Output Ceramic
Capacitors
Up to 90% Efficiency
20µA Shutdown Mode
Fixed 1.4MHz Frequency
Thermal Shutdown
Cycle-by-Cycle Over Current Protection
Wide 4.75V to 28V Operating Input Range
Output is Adjustable From 0.92V to 21V
Under Voltage Lockout
Distributed Power Systems
Battery Chargers
Pre-Regulator for Linear Regulators
APPLICATIONS
EVALUATION BOARD REFERENCE
Board Number
EV2365DN-00A
Dimensions
2.0” x 1.9” x 0.4”
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
TYPICAL APPLICATION
INPUT
4.75V to 28V
OPEN =
AUTOMATIC
STARTUP
7
Efficiency Curve
100
2
IN
EN
1
BS
SW
3
10nF
EFFICIENCY (%)
8
MP2365
SS
GND
4
FB
COMP
6
OUTPUT
3.3V
3A
V
OUT
=5V
90
V
OUT
=3.3V
5
80
B330A
5.6nF
OPEN
70
V
IN
=12V
60
0
0.5 1.0 1.5 2.0 2.5
LOAD CURRENT (A)
3.0
MP2365 Rev. 0.91
7/10/2006
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2006 MPS. All Rights Reserved.
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