MP1582EN-LF-Z 1582 is a primary-side regulator that provides accurate constant voltage (CV) regulation without opto-coupler. It supports Buck, Buck-Boost, 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. MP1582EN-LF-Z 1582 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. MP1582EN-LF-Z 1582 features various protections, including thermal shutdown (TSD), VCC under-voltage lockout (UVLO), overload protection (OLP), short-circuit protection (SCP), and open loop protection. MP1582EN-LF-Z 1582 is available in small TSOT23-5 package and SOIC8 package.
Feature
- 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 hysteresis
- Timer based over-load protection.
- Short-circuit protection
- Open-loop protection
