MP1497S Datasheet: Step-Down Converter





MP1497S Step-Down Converter Datasheet

Part Number MP1497S
Description Step-Down Converter
Manufacture MPS
Total Page 15 Pages
PDF Download Download MP1497S Datasheet PDF

Features: The Future of Analog IC Technology DESCR IPTION The MP1497S is a high-frequency, synchronous, rectified, step-down swit ch mode converter with built in interna l power MOSFETs. It offers a very compa ct solution to achieve 3A continuous ou tput current with excellent load and li ne regulation over a wide input supply range. The MP1497S has synchronous mode operation for higher efficiency over t he output current load range. Current-m ode operation provides a fast transient response and eases loop stabilization. Protective features include over-curre nt protection, thermal shutdown, and ex ternal SS control. The MP1497S requires a minimal number of readily-available external components and is available in a space-saving 8-pin TSOT23 package. MP1497S High-Efficiency, 3A, 16V, 500kH z Synchronous, Step-Down Converter FEAT URES  Wide 4.5V-to-16V Operating Inp ut Range  120mΩ/50mΩ Low RDS(ON) Internal Power MOSFETs  Proprietary Switching-Loss–Reduction Technique  High-Efficiency Synchronous Mode Op.

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The Future of Analog IC Technology
DESCRIPTION
The MP1497S is a high-frequency,
synchronous, rectified, step-down switch mode
converter with built in internal power MOSFETs.
It offers a very compact solution to achieve 3A
continuous output current with excellent load
and line regulation over a wide input supply
range. The MP1497S has synchronous mode
operation for higher efficiency over the output
current load range.
Current-mode operation provides a fast
transient response and eases loop stabilization.
Protective features include over-current
protection, thermal shutdown, and external SS
control.
The MP1497S requires a minimal number of
readily-available external components and is
available in a space-saving 8-pin TSOT23
package.
MP1497S
High-Efficiency, 3A, 16V, 500kHz
Synchronous, Step-Down Converter
FEATURES
Wide 4.5V-to-16V Operating Input Range
120m/50mLow RDS(ON) Internal Power
MOSFETs
Proprietary Switching-Loss–Reduction
Technique
High-Efficiency Synchronous Mode
Operation
Fixed 500kHz Switching Frequency
Can Synchronize to a 300kHz-to-2MHz
External Clock
Externally-Programmable Soft-Start
OCP and Hiccup
Thermal Shutdown
Output Adjustable from 0.8V
Available in an 8-pin TSOT23 Package
APPLICATIONS
Notebook Systems and I/O Power
Digital Set-Top Boxes
Flat-Panel Televisions and Monitors
Distributed Power Systems
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
VIN
4.5V-16V C1
22
EN
C6
0.1
C5
22nF
IN BST
MP1497S
EN/SYNC
SW
VCC
SS GND
FB
C4
L1
R9
33k
R1
40.2k
R2
13k
3.3V/3A
C2
MP1497S Rev. 1.01
www.MonolithicPower.com
9/7/2015
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2015 MPS. All Rights Reserved.
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