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MP2112 Datasheet

  • MP2112

  • Monolithic Power Systems [1MHz, 1A Synchronous Step-Down Co...

  • 278.48KB

  • MPS

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TM
MP2112
1MHz, 1A Synchronous
Step-Down Converter
The Future of Analog IC Technology
TM
DESCRIPTION
The MP2112 is a 1MHz constant frequency,
current mode, PWM step-down converter. The
device integrates a main switch and a
synchronous rectifier for high efficiency without
an external Schottky diode. It is ideal for
powering portable equipment that powered by a
single cell Lithium-Ion (Li+) battery. The
MP2112 can supply 1A of load current from a
2.5V to 6V input voltage. The output voltage
can be regulated as low as 0.6V. The MP2112
can also run at 100% duty cycle for low dropout
applications.
The MP2112 is available in a space-saving
6-pin QFN package.
FEATURES
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High Efficiency: Up to 95%
1MHz Constant Switching Frequency
1A Available Load Current
2.5V to 6V Input Voltage Range
Output Voltage as Low as 0.6V
100% Duty Cycle in Dropout
Current Mode Control
Short Circuit Protection
Thermal Fault Protection
<0.1碌A(chǔ) Shutdown Current
Space Saving 3mm x 3mm QFN6 Package
Cellular and Smart Phones
Microprocessors and DSP Core Supplies
PDAs
MP3 Players
Digital Still and Video Cameras
Portable Instruments
APPLICATIONS
鈥淢PS鈥?and 鈥淭he Future of Analog IC Technology鈥?are Trademarks of Monolithic
Power Systems, Inc.
TYPICAL APPLICATION
V
IN
2.5V to 6V
5
VINA
6
3
Efficiency vs
Load Current
100
90
EN
V
IN
= 3.3V
V
IN
= 4.2V
EN
EFFICIENCY (%)
80
70
60
50
40
30
20
10
0
10
MP2112
4
2
VINB
SW
V
OUT
1.8V/1A
GND
FB
1
MP2112_TAC_S01
100
LOAD CURRENT (mA)
1000
MP2112-EC01
MP2112 Rev. 1.2
3/6/2006
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
漏 2006 MPS. All Rights Reserved.
1

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