onsemi AC DC Converters, Offline Switches NCP1052ST136T3

The NCP1052ST136T3 is a monolithic high voltage gated oscillator power switching regulator designed for AC-DC converter applications. It operates directly from a rectified AC line source, supporting fixed input voltages of 100 V, 115 V, or 230 V, and variable inputs ranging from 85 V to 265 V. This device can deliver output power from 6.0 W to 40 W depending on the input conditions. Key features include an active startup regulator that eliminates the need for an auxiliary bias winding, overload protection, thermal shutdown, and auto-restart fault detection. The device utilizes a unique dual-edge gated oscillator configuration for fast loop response and includes input undervoltage lockout with hysteresis. It is available in a compact SOT-223 package and is compliant with Pb-free and halide-free standards. Typical applications for the NCP1052ST136T3 include wall adapters, portable electronic chargers, and low power standby supplies, making it suitable for various consumer and industrial products.