MP1497S
High-Efficiency, 3A, 16V, 500kHz
Synchronous, Step-Down Converter
MP1497S Rev. 1.01 www.MonolithicPower.com 1
9/7/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2015 MPS. All Rights Reserved.
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.
FEATURES
Wide 4.5V-to-16V Operating Input Range
120m/50m Low R
DS(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 o
Monolithic Power Systems, Inc.
TYPICAL APPLICATION
MP1497S
IN
EN/SYNC
VCC
SS
GND
FB
SW
BSTVIN
EN
C6
0.1
R1
R9
33k
40.2k
R
2
13k
L1
C2
C4
C1
22
3.3
4.5V-16V
V/3A
C5
22nF