The Future of Analog IC Technology
MP158
Small, Energy-Efficient, Off-line Regulator 30mW No-Load Power Consumption
DE...
The Future of Analog IC Technology
MP158
Small, Energy-Efficient, Off-line Regulator 30mW No-Load Power Consumption
DESCRIPTION
MP158 is a primary-side regulator that provides accurate constant
voltage (CV) regulation without opto-coupler. It supports Buck, BuckBoost, Boost and Flyback topologies. It has an integrated 500V
MOSFET to simplify the structure and reduce costs. These features make it an ideal regulator for off-line low power applications, such as home appliances and standby power. MP158 is a green-mode-operation regulator. Both the peak current and switching frequency decrease as the load decreases. This feature provides excellent efficiency at light load, thus improving the overall average efficiency. MP158 features various protections, including thermal shutdown (TSD), VCC under-
voltage lockout (UVLO), overload protection (OLP), short-circuit protection (SCP), and open loop protection. MP158 is available in small TSOT23-5 package and SOIC8 package.
TYPICAL APPLICATION
FEATURES
Primary-side constant
voltage (CV) control, supporting Buck, Buck-Boost, Boost and Flyback topologies
Integrated 500V
MOSFET and current source
<30mW no-load power consumption Up to 2W output power Maximum DCM output current less than
40mA Maximum CCM output current less than
70mA Low VCC Operating Current Frequency foldback Limited maximum frequency Peak-current compression Internally biased VCC Thermal shutdown (auto restart) VCC under
voltage lockout with hy...