MP4560
2A, 2MHz, 55V
Step-Down Converter
The Future of Analog IC Technology
DESCRIPTION
The MP4560 is a high frequency step-down
switching regulator with integrated internal high-
side high voltage power MOSFET. It provides 2A
output with current mode control for fast loop
response and easy compensation.
The wide 3.8V to 55V input range accommodates
a variety of step-down applications, including
those in automotive input environment. A 12µA
shutdown mode supply current allows use in
battery-powered applications.
High power conversion efficiency over a wide
load range is achieved by scaling down the
switching frequency at light load condition to
reduce the switching and gate driving losses.
The frequency foldback helps prevent inductor
current runaway during startup and thermal
shutdown provides reliable, fault tolerant
operation.
By switching at 2MHz, the MP4560 is able to
prevent EMI (Electromagnetic Interference) noise
problems, such as those found in AM radio and
ADSL applications.
The MP4560 is available in small 3mm x 3mm
10-pin QFN and SOIC8 with exposed pad
packages.
FEATURES
•
•
•
•
•
•
•
•
•
Wide 3.8V to 55V Operating Input Range
250mΩ Internal Power MOSFET
Up to 2MHz Programmable Switching
Frequency
140μA Quiescent Current
Ceramic Capacitor Stable
Internal Soft-Start
Up to 95% Efficiency
Output Adjustable from 0.8V to 52V
Available in 3x3 10-Pin QFN and SOIC8
with Exposed Pad Packages
High Voltage Power Conversion
Automotive Systems
Industrial Power Systems
Distributed Power Systems
Battery Powered Systems
APPLICATIONS
•
•
•
•
•
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
C4
100nF
10
V
IN
8,9
VIN
BST
SW
1,2
D1
EN
3
EN
FB
5
C6
NS
V
OUT
3.3V
Efficiency @V
OUT
=3.3V
fs=500kHz
100
90
80
EFFICIENCY (%)
Vin=12V
70
60
50
40
30
20
10
0
0
0.5
1
1.5
2
OUTPUT CURRENT (A)
Vin=55V
MP4560
7
FREQ
GND
6
COMP
4
C3
680pF
C5
NS
MP4560 Rev. 1.0
11/5/2012
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2012 MPS. All Rights Reserved.
1
MPS [ MONOLITHIC POWER SYSTEMS ]
