MP2482 Datasheet, PDF (1/14 Pages) Monolithic Power Systems – 5A, 30V, 420kHz Step-Down Converter

The Future of Analog IC Technology
DESCRIPTION
The MP2482 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 MP2482 requires a minimum number of
readily available standard external components
and is available in 8-pin SOIC package with and
without exposed pad.
TYPICAL APPLICATION
8
V_IN
IN
2
BST
3
VCC
1
MP2482 ^SW
6
PG
D1
B530C
OFF ON
VCC ₇
EN/SYNC
GND
4
5
FB
MP2482
5A, 30V, 420kHz
Step-Down Converter
FEATURES
• Wide 4.5V to 30V Operating Input Range
• 5A Output Current
• 50mΩ Internal 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 0.81V
• Stable with Low ESR Output Ceramic
Capacitors
• Available in 8-Pin SOIC Package and
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.
V_OUT
3.3V @ 5A
Efficiency vs Output Current
V_OUT=3.3V
100
V_IN=5V
95
90 ^VIN=12V
85
80 V_IN=30V
75
70
1
2
3
4
5
OUTPUT CURRENT (A)
MP2482 Rev.1.4
www.MonolithicPower.com
1
9/21/2011
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
Preliminary Specifications Subject to Change
© 2011 MPS. All Rights Reserved.