MP1499 Datasheet, PDF (1/18 Pages) Monolithic Power Systems – High Efficiency 5A Peak, 16V, 500kHz Synchronous Step Down Converter

The Future of Analog IC Technology
MP1499
High Efficiency 5A Peak, 16V, 500kHz
Synchronous Step Down Converter
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
APPLICATIONS
 Digital Set Top Boxes
 Flat Panel Television 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
R5
10
VIN
C1
22
9
4
C4
100nF
IN
BST
L1
3 _EN/SYNC
SW ⁸
3.3
R3
100k
MP1499
R8
10 _SS
FB ^{1 33k}
R1
40.2k
VCC NC GND
R2
C5
C6 ^{2 5 6, 7}
13k
22nF
VOUT
3.3V/5A
C2
47
Efficiency vs.
Output Current
100V^OUT=3.3V
95
90
85
80
V_IN=12V
V_IN=5V
75
70
65 _VIN=16V
60
55
50
0.01
0.10
1.00
10.00
OUTPUT CURRENT(A)
MP1499 Rev. 1.0
www.MonolithicPower.com
1
7/26/2012
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2012 MPS. All Rights Reserved.