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MP2112 Datasheet, PDF (1/8 Pages) Monolithic Power Systems – 1MHz, 1A Synchronous Step-Down Converter | |||
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TM
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.
MP2112
1MHz, 1A Synchronous
Step-Down Converter
FEATURES
⢠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
⢠<0.1µA Shutdown Current
⢠Space Saving 3mm x 3mm QFN6 Package
APPLICATIONS
⢠Cellular and Smart Phones
⢠Microprocessors and DSP Core Supplies
⢠PDAs
⢠MP3 Players
⢠Digital Still and Video Cameras
⢠Portable Instruments
âMPSâ and âThe Future of Analog IC Technologyâ are Trademarks of Monolithic
Power Systems, Inc.
TYPICAL APPLICATION
VIN
2.5V to 6V
5 VINA
6
EN
MP2112
4 VINB
3
SW
2
GND
FB 1
EN
VOUT
1.8V/1A
MP2112_TAC_S01
Efficiency vs
Load Current
100
90 VIN = 3.3V
80
70
VIN = 4.2V
60
50
40
30
20
10
0
10
100
1000
LOAD CURRENT (mA)
MP2112-EC01
MP2112 Rev. 1.2
www.MonolithicPower.com
1
3/6/2006
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2006 MPS. All Rights Reserved.
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