MP2494 Datasheet, PDF (1/11 Pages) Monolithic Power Systems – 2A, 55V, 100kHz Step-Down Converter

The Future of Analog IC Technology
MP2494
2A, 55V, 100kHz Step-Down Converter
DESCRIPTION
The MP2494 is a monolithic step-down switch
mode converter. It achieves 2A continuous
output current over a wide input supply range
with excellent load and line regulation.
MP2494 achieves low EMI signature with well
controlled switching edges.
Fault condition protection includes cycle-by-cycle
current limiting and thermal shutdown.
The MP2494 requires a minimum number of
readily available standard external components.
The MP2494 is available in SOIC8 and SOIC8E
package.
FEATURES
• Wide 4.5V to 55V Operating Input Range
• Output Adjustable from 0.8V to 15V
• 0.25Ω Internal Power MOSFET Switch
• Stable with Low ESR Output Ceramic
Capacitors
• Fixed 100kHz Frequency
• Low EMI signature
• Thermal Shutdown
• Cycle-by-Cycle Over Current Protection
• Available in SOIC8 and SOIC8E packages
APPLICATIONS
• USB Power Supplies
• Automotive Cigarette Lighter Adapters
All MPS parts are lead-free and adhere to the RoHS directive. For MPS green
status, please visit MPS website under Quality Assurance. “MPS” and “The
Future of Analog IC Technology” are Registered Trademarks of Monolithic
Power Systems, Inc.
TYPICAL APPLICATION
0.1μF
U1
7
VIN
8V-55V
220μF
63V
2.2μF
100V
1
VIN
3 _EN
BST
8
SW
EN
MP2494 _GS 6
0.1μF
5 _SS
GND
2
FB ⁴
L1
39μH
DR1050-390-R ^R1
D1
301k
2A/80V
1%
R2
57.6k
1%
5V@2A
150pF
39μF 22μF
16V 16V
VOUT
MP2494 Rev. 1.0
www.MonolithicPower.com
1
4/25/2012
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© 2012 MPS. All Rights Reserved.