MP1497
High-Efficiency, 3A, 16V, 500kHz
Synchronous, Step-Down Converter
The Future of Analog IC Technology
DESCRIPTION
The MP1497 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
MP1497 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 MP1497 requires a minimal number of
readily-available external components and is
available in a space-saving 8-pin TSOT23
package.
FEATURES
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Wide 4.5V-to-16V Operating Input Range
80mΩ/30mΩ 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 200kHz-to-2MHz
External Clock
Externally-Programmable Soft-Start
OCP and Hiccup
Thermal Shutdown
Output Adjustable from 0.8V
Available in an 8-pin TSOT-23 Package
Notebook Systems and I/O Power
Digital Set-Top Boxes
Flat-Panel Televisions and Monitors
Distributed Power Systems
APPLICATIONS
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
2
IN
BST
5
C4
MP1497
6
EN/SYNC
VCC
FB
1
C5
22
SW
3
L1
R3
33k
R1
40.2k
3.3V/3A
C2
EN
7
C3
0.1
8
SS
GND
4
R2
13k
MP1497 Rev. 1.05
12/26/2012
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2012 MPS. All Rights Reserved.
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MPS [ MONOLITHIC POWER SYSTEMS ]
