MP1494 Datasheet, PDF (1/15 Pages) Monolithic Power Systems – High-Efficiency, 2A, 16V, 500kHz Synchronous, Step-Down Converter

The Future of Analog IC Technology
DESCRIPTION
The MP1494 is a high-frequency, synchronous,
rectified, step-down, switch-mode converter
with built-in power MOSFETs. It offers a very
compact solution to achieve a 2A continuous
output current with excellent load and line
regulation over a wide input supply range. The
MP1494 has synchronous mode operation for
higher efficiency over the 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 MP1494 requires a minimal number of
readily-available standard external components,
and is available in a space-saving 8-pin
TSOT23 package.
MP1494
High-Efficiency, 2A, 16V, 500kHz
Synchronous, Step-Down Converter
FEATURES
• Wide 4.5V-to-16V Operating Input Range
• 100mΩ/40mΩ Low R_DS(ON) Internal Power
MOSFETs
• High-Efficiency Synchronous Mode
Operation
• Fixed 500kHz Switching Frequency
• Synchronizes from a 200kHz-to-2MHz
External Clock
• AAM Power-Save Mode
• Internal Soft-Start
• OCP Protection and Hiccup
• Thermal Shutdown
• Output Adjustable from 0.8V
• Available in an 8-pin TSOT-23 Package
APPLICATIONS
• Notebook Systems and I/O Power
• 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 Quality Assurance. “MPS” and “The
Future of Analog IC Technology” are Registered Trademarks of Monolithic
Power Systems, Inc.
TYPICAL APPLICATION
4.5V-16V
VIN
C1
22
EN/
SYNC
C3
R3
0.1
90.9k
R5
10k
2 _IN
6 _EN/SYNC
R4
5 10
BST
3
SW
C4
L1
7
VCC
1
AAM _GND
4
8
FB
R1
R9
33k
40.2k
R2
13k
3.3V/2A
C2
47
MP1494 Rev. 1.04
www.MonolithicPower.com
1
12/26/2012
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