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參數(shù)資料
| 型號： | EV0059 |
| 廠商： | Monolithic Power Systems, Inc. |
| 英文描述： | 1.2A Synchronous Rectified Step-Down Converter |
| 中文描述： | 1.2A的同步整流降壓轉(zhuǎn)換器 |
| 文件頁數(shù)： | 1/11頁 |
| 文件大小： | 309K |
| 代理商： | EV0059 |
The Future of Analog IC Technology
MP1567
1.2A Synchronous Rectified
Step-Down Converter
MP1567 Rev. 2.3
1/3/2006
www.MonolithicPower.com
1
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
2006 MPS. All Rights Reserved.
TM
TM
DESCRIPTION
The MP1567 is a 1.2A, 800KHz DC to DC
converter designed for low voltage applications
requiring high efficiency. Capable of providing
output voltages as low as 0.9V from a 3.3V
supply voltage, the MP1567 eliminates the
need for a 5V rail, providing over 90% efficiency
via synchronous rectification and eliminating
heat issues in confined spaces. Soft-start
operation protects internal circuitry from hard
turn on issues. Switching at 800KHz reduces
the size of external components and thereby
reduces board space.
The MP1567 includes cycle-by-cycle current
limiting and under voltage lockout. Internal
power switches combined with the tiny 10-pin
MSOP or QFN packages provide a solution
requiring a minimum of space.
EVALUATION BOARD REFERENCE
Board Number
EV0033 (MP1567DK)
EV0059 (MP1567DK)
EV0060 (MP1567DQ)
Dimensions
2.5”X x 2.0”Y x 0.7”Z
2.5”X x 2.0”Y x 0.4”Z
2.5”X x 2.0”Y x 0.4”Z
FEATURES
1.2A Output Current
Synchronous Rectified
Internal 180m
and 220m
Power Switches
V
IN
Range of 2.6V to 6V
Over 90% Efficiency
Zero Current Shutdown Mode
Under Voltage Lockout Protection
Soft-Start Operation
Thermal Shutdown
Tiny 10-Pin MSOP or QFN Packages
Evaluation Boards Available
APPLICATIONS
SOHO Routers, PCMCIA Cards, Mini PCI
Handheld Computers, PDAs
Cell Phones
Digital Video Cameras
Small LCD Displays
“MPS” and “The Future of Analog IC Technology” are Trademarks of Monolithic
Power Systems, Inc.
TYPICAL APPLICATION
MP1567
SW
FB
IN
BS
1
3
7
9
8
4
5
6
10
2
BP
SS
COMP
SGND PGND
EN
V
OUT
1.8V/1.2A
INPUT
2.6V to 6V
OPEN IF
NOT USED
MP1567_TAC_S01
OFF ON
10nF
10nF
1nF
10nF
100
90
80
70
60
50
40
30
20
10
0
E
10
100
1000
LOAD CURRENT (mA)
MP1567_EC01
Efficiency vs
Load Current
V
IN
=5V
V
IN
=4V
V
IN
=3.3V
V
OUT
=1.8V
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