MP28490 Datasheet: Step-Down Converter





MP28490 Step-Down Converter Datasheet

Part Number MP28490
Description Step-Down Converter
Manufacture MPS
Total Page 10 Pages
PDF Download Download MP28490 Datasheet PDF

Features: The Future of Analog IC Technology DESCR IPTION The MP28490 is a monolithic step -down switch mode converter with a buil t in internal power MOSFET. It achieves 5A continuous output current over a wi de input supply range with excellent lo ad and line regulation. Current mode op eration provides fast transient respons e and eases loop stabilization. Fault c ondition protection includes cycle-by-c ycle current limiting and thermal shutd own. The MP28490 requires a minimum num ber of readily available standard exter nal components and is available in an 8 -pin SOIC package with exposed pad. MP 28490 5A, 30V, 420kHz Step-Down Convert er FEATURES • Wide 4.5V to 30V Operat ing Input Range • 5A Output Current 50mΩ Internal Power MOSFET Switch • Power Good Indicator • Fixed 420k Hz Frequency • Synchronizable up to 1 .5MHz • Cycle-by-Cycle Over Current P rotection with hiccup • Thermal Shutd own • Output Adjustable from 0.8V to 15V • Stable with Low ESR Output Ceramic Capacitors • Available in a Thermally Enha.

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The Future of Analog IC Technology
DESCRIPTION
The MP28490 is a monolithic step-down switch
mode converter with a built in internal power
MOSFET. It achieves 5A 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 MP28490 requires a minimum number of
readily available standard external components
and is available in an 8-pin SOIC package with
exposed pad.
MP28490
5A, 30V, 420kHz
Step-Down Converter
FEATURES
Wide 4.5V to 30V Operating Input Range
5A Output Current
50mInternal Power MOSFET Switch
Power Good Indicator
Fixed 420kHz Frequency
Synchronizable up to 1.5MHz
Cycle-by-Cycle Over Current Protection with
hiccup
Thermal Shutdown
Output Adjustable from 0.8V to 15V
Stable with Low ESR Output Ceramic
Capacitors
Available in a Thermally Enhanced 8-Pin
SOIC Package
APPLICATIONS
Digital Set Top Boxes
Personal Video Recorders
Broadband Communications
Flat Panel Television and Monitors
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
TYPICAL APPLICATION
8
IN
2
BST
3
VCC
6
PG
1
SW
OFF ON
7
EN/SYNC
GND
4
5
FB
MP28490 Rev.1.0
9/17/2009
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2009 MPS. All Rights Reserved.
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