MP4568
60V, 100mA Synchronous
Step-Down Converter
FEATURES
DESCRIPTION
20μA Quiescent Current
Wide 4.5V to 45V Operating Range with 50V
Input OVP
The MP4568 is a high-frequency, step-down,
switching regulator with integrated high-
side/low-side, high-voltage power MOSFETs. It
provides a highly efficient output of up to
100mA.
60V Integrated MOSFETs with 0.7Ω and
2.25Ω Ron
Programmable Switching Frequency
Stable with Ceramic Output Capacitors
Low Output Ripple
60V rated MOSFETs and 4.5V to 45V operation
range accommodates a variety of step-down
applications in automotive input environment. A
5μA shutdown mode quiescent current allows
use in battery-powered applications.
Programmable Soft-Start
Adjustable Input UVLO Hysteresis
Precision Peak Current Limit without
Current-Sensing Resistor
It allows for high power conversion efficiency
over a wide load range by scaling down the
switching frequency under light-load condition
to reduce the switching and gate driver losses.
Programmable Peak Current Limit
>90% Efficiency at 10V VIN to 5V VOUT/2mA
1.0V Feedback Reference Voltage
Low Shutdown Mode Current: <5μA
3mmx3mm QFN10 Package
The switching frequency during start-up and
short circuit also can be scaled down to helps
prevent inductor current runaway. Thermal
shutdown provides reliable, fault-tolerant
operation.
APPLICATIONS
4mA to 20mA Current Loops
Automotive Systems
Industrial Power Systems
Distributed Power Systems
Battery Powered Systems
The MP4568 is available in a 3mmx3mm
QFN10 package.
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
L1
100uH
C2
0.1uF
U1
IN
5V/100mA
10
2
SW
VOUT
VIN
C3
22uF
C1
R3
2M
10uF
9
MP4568
4
5
EN
BIAS
FB
EN
8
6
7
R1
1.2M
ENHY
ILIM
SS
R4
100k
R2
300k
MP4568 Rev. 1.01
8/18/2013
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
1