The Future of Analog IC Technology
Smallest Energy Efficient Off-line
Regulator with Extended Power Range
MP157 is a primary side regulator providing
accurate constant voltage (CV) regulation
without the Opto-coupler. It supports Buck,
Buck-Boost, Boost and Flyback topologies. A
500V MOSFET is integrated in the regulator, so
very simple structure and low cost can be
achieved. These features make MP157 an ideal
solution for off-line low power applications.
Typical applications include home appliance,
standby power and industrial control.
MP157 is a green mode operation regulator.
When the load decreases, the peak current and
the switching frequency decrease with the load.
As a result, it still offers excellent efficiency
performance at light load, thus better average
efficiency is achieved.
MP157 features various protections like
Thermal Shutdown (TSD), VCC under Voltage
Lockout (UVLO), Over Load Protection (OLP),
Short Circuit Protection (SCP), Open Loop
MP157 is available in the TSOT23-5 and
Primary side constant voltage (CV) control,
supporting Buck, Buck-Boost, Boost and
Integrated 500V/10Ω MOSFET
< 100mW No-load power consumption
Up to 6W output power
Maximum discontinuous conduction mode
(DCM) output current less than 225mA,
maximum continuous conduction mode
(CCM) output current less than 360mA
Low Vcc Operating Current
Limited maximum frequency
Peak Current Compression
Internal High Voltage Current Source
Internal 400ns Leading Edge Blanking
Thermal Shutdown (auto restart)
VCC Under Voltage Lockout with Hysteresis
Timer based Over Load Protection
Short Circuit Protection
Open Loop Protection
Home Appliances, White Goods and
All MPS parts are lead-free, halogen free, and adhere to the RoHS
directive. For MPS green status, please visit MPS website under Quality
“MPS” and “The Future of Analog IC Technology” are Registered
Trademarks of Monolithic Power Systems, Inc.
MP157 Rev. 1.04
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2016 MPS. All Rights Reserved.