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參數(shù)資料
| 型號(hào)： | A921CY-4R7M |
| 廠商： | Monolithic Power Systems, Inc. |
| 英文描述： | 1.2A, 24V, 1.4MHz Step-Down Converter in a TSOT23-6 |
| 中文描述： | 1.2A電流，24V的，1.4MHz的降壓轉(zhuǎn)換器中的TSOT23 - 6 |
| 文件頁(yè)數(shù)： | 1/9頁(yè) |
| 文件大?。?/td> | 383K |
| 代理商： | A921CY-4R7M |
The Future of Analog IC Technology
MP2359
1.2A, 24V, 1.4MHz
Step-Down Converter in a TSOT23-6
MP2359 Rev. 1.1
6/23/2006
www.MonolithicPower.com
1
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
2006 MPS. All Rights Reserved.
TM
TM
DESCRIPTION
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
provides fast transient response and eases loop
stabilization. Fault condition protection includes
cycle-by-cycle current limiting and thermal
shutdown.
mode
operation
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
Board Number
EV2359DJ-00B
Dimensions
2.1”X x 1.9”Y x 0.4”Z
FEATURES
1.2A Peak Output Current
0.35
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
APPLICATIONS
Distributed Power Systems
Battery Charger
Pre-Regulator for Linear Regulators
WLED Drivers
“MPS” and “The Future of Analog IC Technology” are Trademarks of Monolithic
Power Systems, Inc.
TYPICAL APPLICATION
MP2359
SW
FB
BST
GND
IN
EN
1
6
3
2
4
5
V
OUT
3.3V @ 1.2A
CB
10nF
D1
B230A
V
IN
12V
OFF ON
Efficiency vs
Load Currents
V
IN
= 12V
V
IN
= 24V
V
OUT
= 5V
100
90
80
70
60
50
40
30
20
10
0
0.01
LOAD CURRENT (A)
E
0.1
1
10
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