MP1482 Datasheet, PDF (1/12 Pages) Monolithic Power Systems – 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.
MP1482
2A, 18V Synchronous Rectified
Step-Down Converter
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
APPLICATIONS
 Distributed Power Systems
 Networking Systems
 FPGA, DSP, ASIC Power Supplies
 Green Electronics/ Appliances
 Notebook Computers
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
2
1
7
IN
EN
BS ₃
SW
8
SS
MP1482
5
FB
GND
COMP
4
6
Efficiency vs
Load Current
100
95
V_OUT = 3.3V
90
85
V_OUT = 2.5V
80
75
70
65
60
55
50
0 0.5 1.0 1.5 2.0 2.5
LOAD CURRENT (A)
MP1482 Rev. 1.31
www.MonolithicPower.com
1
7/9/2012
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