MP2562DQ-LF-Z Datasheet, PDF (1/20 Pages) MPS Industries, Inc. – 1A, 4MHz, 50V Step-Down Converter

The Future of Analog IC Technology
MP2562
1A, 4MHz, 50V
Step-Down Converter
DESCRIPTION
The MP2562 is a high frequency step-down
switching regulator with an integrated internal
high-side high voltage power MOSFET. It
provides 1A output with current mode control for
fast loop response and easy compensation.
The wide 4.5V to 50V input range accommodates
a variety of step-down applications, including
those in an automotive input environment. A 12µA
shutdown mode quiescent 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 4MHz, the MP2562 is able to
prevent EMI (Electromagnetic Interference) noise
problems, such as those found in AM radio and
ADSL applications.
The MP2562 is available in small 3mm x 3mm
QFN10 and SOIC8 packages.
FEATURES
 120μA Quiescent Current(12uA Shutdown)
 Wide 4.5V to 50V Operating Input Range
 460mΩ Internal Power MOSFET
 Up to 4MHz Programmable Switching
Frequency
 Stable with Ceramic Capacitor
 Internal Soft-Start
 Internally Set Current Limit without external
Current Sensing Resistor
 Up to 95% Efficiency
 Output Adjustable from 0.8V to 47V
 Available in 3x3 QFN10 and SOIC8
Packages
APPLICATIONS
 High Voltage Power Conversion
 Automotive Systems
 Industrial Power Systems
 Distributed Power Systems
 Battery Powered Systems
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
TYPICAL APPLICATION
C4
100nF
10
L1
VIN
8,9 _VIN
BST
SW ^1,2
C1
R5
D1
100V
C2
6.3V
EN
R6
3 _EN
FB ⁵
MP2562
R2
R1
7 _FREQ
R4
COMP ⁴
GND
6
C3
220pF
R3
VOUT
3.3V
90 _VIN=8V
80
70
V_IN=24V
60
V_IN=50V
50 ^VIN^{=12V VIN=36V}
40
10
100
1000
OUTPUT CURRENT (mA)
MP2562 Rev. 1.0
www.MonolithicPower.com
1
2/28/2014
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2014 MPS. All Rights Reserved.