MP1471
High-Efficiency, 3A Peak,
16V, 500kHz Synchronous,
Step-Down Converter In a 6-Pin TSOT 23
MP1471 Rev. 1.01 www.MonolithicPower.com 1
8/27/2013 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
The Future of Analog IC Technology
DESCRIPTION
The MP1471 is a high-frequency, synchronous,
rectified, step-down, switch-mode converter
with internal power MOSFETs. It offers a very
compact solution to achieve a 3A peak output
current over a wide input supply range, with
excellent load and line regulation. The MP1471
has synchronous-mode operation for higher
efficiency over the output current-load range.
Current-mode operation provides fast transient
response and eases loop stabilization.
Protection features include over-current
protection and thermal shutdown.
The MP1471 requires a minimal number of
readily-available, standard, external
components and is available in a space-saving
6-pin TSOT23 package.
FEATURES
• Wide 4.7V-to-16V Operating Input Range
• 150m/70m Low-R
DS(ON)
Internal Power
MOSFETs
• Proprietary Switching-Loss–Reduction
Technology
• High-Efficiency Synchronous-Mode
Operation
• Fixed 500kHz Switching Frequency
• Internal AAM Power-Save Mode for High
Efficiency at Light Load
• Internal Soft-Start
• Over-Current Protection and Hiccup
• Thermal Shutdown
• Output Adjustable from 0.8V
• Available in a 6-pin TSOT-23 package
APPLICATIONS
• Game Consoles
• Digital Set-Top Boxes
• Flat-Panel Television and Monitors
• General Purposes
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
R2
13k
R1
40.2k
R3
40.2k
IN
U1
GND
MP1471
1
4
VOUT
2
6
3
5
EN
FB
SW
BST
3.3V
EN
GND
50
55
60
65
70
75
80
85
90
95
100
0.01 0.1 1 10
