MP157

Smallest Energy Efficient Off-line

Regulator with Extended Power Range

MP157 Rev. 1.04

www.MonolithicPower.com

1

6/27/2016

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© 2016 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

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

Protection.

MP157 is available in the TSOT23-5 and

SOIC8 packages.

FEATURES

 Primary side constant voltage (CV) control,

supporting Buck, Buck-Boost, Boost and

Flyback topologies

 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

 Frequency Foldback

 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

(UVLO)

 Timer based Over Load Protection

 Short Circuit Protection

 Open Loop Protection

APPLICATIONS

 Home Appliances, White Goods and

Consumer Electronics

 Industrial Controls

 Standby Power

All MPS parts are lead-free, halogen 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.