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MP2359的详细信息
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TM
MP2359
1.2A, 24V, 1.4MHz
Step-Down Converter in a TSOT23-6
TM
The Future of Analog IC Technology
DESCRIPTION
FEATURES
The MP2359 is a monolithic step-down switch
mode converter with a built-in power MOSFET.
It achieves 1.2A peak 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.
•
•
•
1.2A Peak Output Current
0.35Ω Internal Power MOSFET Switch
Stable with Low ESR Output Ceramic
Capacitors
Up to 92% Efficiency
0.1µA Shutdown Mode
•
•
•
•
•
•
•
•
Fixed 1.4MHz Frequency
Thermal Shutdown
Cycle-by-Cycle Over Current Protection
Wide 4.5V to 24V Operating Input Range
Output Adjustable from 0.81V to 15V
Available in TSOT23-6 and SOT23-6
Packages
The MP2359 requires a minimum number of
readily available standard external components.
The MP2359 is available in TSOT23-6 and
SOT23-6 packages.
EVALUATION BOARD REFERENCE
APPLICATIONS
Board Number
Dimensions
•
•
•
•
Distributed Power Systems
Battery Charger
Pre-Regulator for Linear Regulators
WLED Drivers
EV2359DJ-00B
2.1”X x 1.9”Y x 0.4”Z
“MPS” and “The Future of Analog IC Technology” are Trademarks of Monolithic
Power Systems, Inc.
TYPICAL APPLICATION
Efficiency vs
Load Currents
100
5
1
6
V
IN = 12V
V
12V
IN
BST
SW
IN
90
80
70
60
50
40
30
20
10
0
CB
10nF
V
OUT
3.3V @ 1.2A
V
IN = 24V
MP2359
D1
B230A
4
3
EN
FB
OFF ON
GND
2
V
OUT = 5V
0.01
0.1
LOAD CURRENT (A)
10
1
MP2359 Rev. 1.1
6/23/2006
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2006 MPS. All Rights Reserved.
1
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