MP2497-A Datasheet | Step-Down Converter





MP2497-A PDF File (Datasheet) Download

Part Number MP2497-A
Description Step-Down Converter
Manufacture MPS
Total Page 14 Pages
PDF Download Download MP2497-A PDF File

Features: MP2497-A 3A, 50V, 100kHz Step-Down Conve rter with Programmable Output OVP Thres hold The Future of Analog IC Technology DESCRIPTION The MP2497-A is a monolit hic step-down switch mode converter wit h a programmable output current limit. The MP2497-A is the high efficiency ver sion of MP2497. It has fast switching s peed thus the switching loss is greatly reduced. It achieves 3A continuous out put current over a wide input supply ra nge with excellent load and line regula tion. An internal 2-4ms soft start prev ents inrush current at turning on. And it is capable of providing output line drop compensation. Fault condition prot ection includes hiccup current limit an d short circuit protection, programmabl e output over voltage protection and th ermal shutdown. The MP2497-A requires a minimum number of readily available st andard external components. The MP2497- A is available in SOIC8E package. FEAT URES  Wide 4.5V to 50V Operating Inp ut Range  Programmable Output Over Voltage Protection  Output A.

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MP2497-A
3A, 50V, 100kHz Step-Down Converter
with Programmable Output OVP Threshold
The Future of Analog IC Technology
DESCRIPTION
The MP2497-A is a monolithic step-down
switch mode converter with a programmable
output current limit. The MP2497-A is the high
efficiency version of MP2497. It has fast
switching speed thus the switching loss is
greatly reduced. It achieves 3A continuous
output current over a wide input supply range
with excellent load and line regulation. An
internal 2-4ms soft start prevents inrush current at
turning on. And it is capable of providing output
line drop compensation.
Fault condition protection includes hiccup current
limit and short circuit protection, programmable
output over voltage protection and thermal
shutdown.
The MP2497-A requires a minimum number of
readily available standard external components.
The MP2497-A is available in SOIC8E
package.
FEATURES
Wide 4.5V to 50V Operating Input Range
Programmable Output Over Voltage
Protection
Output Adjustable from 0.8V to 25V
0.15Internal Power MOSFET Switch
Internal 4ms Soft Start
Stable with Low ESR Output Ceramic
Capacitors
Fixed 100kHz Frequency
Fast Switching Speed
Thermal Shutdown
Output Line Drop Compensation
Hiccup Circuit Limit and Short Circuit
Protection
Available in SOIC8E Package
APPLICATIONS
USB Power Supplies
Automotive Cigarette Lighter Adapters
Power Supply for Linear Chargers
All MPS parts are lead-free and adhere to the RoHS directive. For MPS green
status, please visit MPS website under Products, Quality Assurance page.
“MPS” and “The Future of Analog IC Technology” are registered trademarks of
Monolithic Power Systems, Inc.
TYPICAL APPLICATION
R6
VIN
C1
GND
C2
C11
VIN
BST
SW
MP2497-A
OVP
L1
C6
Diode
C3 C4 C10
Rsense
+
R4 R3
GND
FB
ISP
C7
10nF
ISN C8
10nF
R7
R5
C9
150pF
R1
R2
VOUT
C5
GND
Efficiency vs.
Output Current
95
90
85
80 VIN=12V
75 VIN=24V
70
VIN=50V
65
60
0.1 0.5 0.9 1.3 1.7 2.1 2.5 2.9
OUTPUT CURRENT(A)
MP2497-A Rev. 1.0
www.MonolithicPower.com
5/30/2012
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2012 MPS. All Rights Reserved.
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