MP1498
High-Efficiency, 2A, 16V, 1.4MHz
Synchronous, Step-Down Converter
The Future of Analog IC Technology
DESCRIPTION
The MP1498 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 2A continuous
output current with excellent load and line
regulation over a wide input supply range. The
MP1498 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 MP1498 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
100mΩ/40mΩ Low R
DS(ON)
Internal Power
MOSFETs
Proprietary Switching-Loss–Reduction
Technique
High-Efficiency Synchronous Mode
Operation
Fixed 1.4MHz Switching Frequency
Can Synchronize to a 300kHz-to-3MHz
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
2
C1
22 F
VIN
IN
BST
5
R3
20
C4
0.1 F
L1
2.2 H
100
95
3.3V/2A
R1
40.2k
MP1498
6
EN/SYNC
VCC
FB
1
C5
22nF
SW
3
C2
22 F
90
85
80
75
70
EN/
SYNC
C3
0.1 F
7
8
R5
24k
R2
13k
SS
GND
4
65
60
55
50
0.0
0.4
0.8
1.2
1.6
2.0
MP1498 Rev. 1.01
www.MonolithicPower.com
12/18/2012
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2012 MPS. All Rights Reserved.
1
MPS [ MONOLITHIC POWER SYSTEMS ]
