MP2270 Datasheet, PDF (1/10 Pages) Monolithic Power Systems – 1.8A, 24V, 700kHz Step-Down Converter

The Future of Analog IC Technology
DESCRIPTION
The MP2270 is a monolithic step-down switch
mode converter with a built-in internal power
MOSFET. It achieves 1.8A continuous 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.
The MP2270 requires a minimum number of
readily available standard external components.
The MP2270 is available in a 10-pin exposed pad
MSOP package.
MP2270
1.8A, 24V, 700kHz
Step-Down Converter
FEATURES
• 1.8A Continuous Output Current
• 0.3Ω Internal Power MOSFET Switch
• Stable with Low ESR Output Ceramic
Capacitors
• 0.1μA Shutdown Mode
• Fixed 700kHz Frequency
• Thermal Shutdown
• Cycle-by-Cycle Over Current Protection
• Wide 4.5V to 24V Operating Input Range
• Output Adjustable from 0.81V to 20V
• Available in a 10-pin Exposed Pad MSOP
Package
APPLICATIONS
• Broadband Communications Equipment
• Digital Entertainment Systems
• Distributed Power Systems
• Battery Charger
• Pre-Regulator for Linear Regulators
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
TYPICAL APPLICATION
V_IN
OFF ON
5
IN
1
BST
CB
10nF
3
SW
MP2270
D1
B230A
6
EN
GND
8
10
FB
V_OUT
3.3V
V_IN
I_{OUT_MAX}=1.8
MP2270 Rev. 1.1
www.MonolithicPower.com
1
4/16/2010
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