MP156

Small, Energy-Efficient, Off-line Regulator

30mW No-Load Power Consumption

MP156 Rev. 1.15

www.MonolithicPower.com

1

4/21/2016

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The Future of Analog IC Technology

DESCRIPTION

MP156 is a primary-side regulator that provides

accurate constant voltage (CV) regulation

without opto-coupler, support Buck, Buck-Boost,

Boost and Flyback topologies. It has an

integrated 500V MOSFET to simplify the

structure and reduce costs. These features

make it a competitive candidate for off-line low

power applications, such as home appliances

and standby power.

MP156 is a green-mode-operation regulator.

Both its the peak current and the switching

frequency decrease as the load decreases to

provide excellent efficiency at light load, thus

improving the overall average efficiency.

MP156 features various protections, including

thermal shutdown (TSD), VCC under-voltage

lockout (UVLO), overload protection (OLP),

short-circuit protection (SCP), and open loop

protection.

MP156 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/20Ω MOSFET

• <30mW no-load power consumption

• Up to 4W output power

• Maximum DCM output current less than

130mA

• Maximum CCM output current less than

220mA

• Low VCC Operating Current

• Frequency foldback

• Limited maximum frequency

• Peak-current compression

• Internal high-voltage current source

• Internal 350ns leading-edge blanking

• Thermal shutdown (auto restart)

• VCC under voltage lockout with hysteresis

• 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 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