MP1499
High Efficiency 5A Peak, 16V, 500kHz
Synchronous Step Down Converter
The Future of Analog IC Technology
DESCRIPTION
The MP1499 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 5A peak
output current over a wide input supply range
with excellent load and line regulation. The
MP1499 has synchronous mode operation for
higher efficiency over output current load range.
Current mode operation provides fast transient
response and eases loop stabilization.
Full protection features include over current
protection and thermal shut down.
The MP1499 requires a minimum number of
readily available standard external components
and is available in a space saving 10-pin QFN
(2x3mm) package.
FEATURES
Wide 4.5V to 16V Operating Input Range
70mΩ/25mΩ Low R
DS(ON)
Internal Power
MOSFETs
Proprietary Switching Loss Reduction
Technique
Fixed 500kHz Switching Frequency
Sync from 200kHz to 2MHz External Clock
AAM Power Save Mode
External Soft Start
OCP Protection and Hiccup
Thermal Shutdown
Output Adjustable from 0.8V
Available in a QFN10 (2x3mm) Package
Digital Set Top Boxes
Flat Panel Television 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
R5
10
Efficiency vs.
Output Current
V
=3.3V
100
OUT
C4
100nF
V
IN
C1
22
9
IN
4
BST
SW
95
L1
3.3
90
V
OUT
3.3V/5A
3
R3
100k
EN/SYNC
8
R8
33k
85
80
75
70
65
60
55
50
0.01
0.10
1.00
10.00
V
IN
=16V
V
IN
=12V
V
IN
=5V
MP1499
10
SS
VCC
FB
1
NC GND
R1
40.2k
C5
22nF
C6
2
5
6, 7
R2
13k
C2
47
OUTPUT CURRENT(A)
MP1499 Rev. 1.0
7/26/2012
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2012 MPS. All Rights Reserved.
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