MP1482
2A, 18V Synchronous Rectified
Step-Down Converter
The Future of Analog IC Technology
DESCRIPTION
The MP1482 is a monolithic synchronous buck
regulator. The device integrates two 130mΩ
MOSFETs, and provides 2A of continuous load
current over a wide input voltage of 4.75V to
18V. Current mode control provides fast
transient response and cycle-by-cycle current
limit.
An adjustable soft-start prevents inrush current
at turn-on, and in shutdown mode the supply
current drops to 1µA.
This device, available in an 8-pin SOIC
package, provides a very compact solution with
minimal external components.
FEATURES
2A Output Current
Wide 4.75V to 18V Operating Input Range
Integrated 130mΩ Power MOSFET Switches
Output Adjustable from 0.923V to 15V
Up to 93% Efficiency
Programmable Soft-Start
Stable with Low ESR Ceramic Output Capacitors
Fixed 340kHz Frequency
Cycle-by-Cycle Over Current Protection
Input Under Voltage Lockout
8–Pin SOIC
Distributed Power Systems
Networking Systems
FPGA, DSP, ASIC Power Supplies
Green Electronics/ Appliances
Notebook Computers
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
INPUT
Efficiency vs
Load Current
100
95
2
7
IN
EN
1
BS
3
SW
V
OUT
= 3.3V
V
OUT
= 2.5V
90
EFFICIENCY (%)
85
80
75
70
65
60
55
50
0
MP1482
8
SS
GND
4
FB
COMP
6
5
0.5
1.0
1.5
2.0
LOAD CURRENT (A)
2.5
MP1482 Rev. 1.31
www.MonolithicPower.com
7/9/2012
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2012 MPS. All Rights Reserved.
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