TEA1720B3T: HV start-up flyback controller for ultra-low no-load charger applications up to 12.5 W ARCHIVED

The TEA1720B3T is a small and low cost Switched Mode Power Supply (SMPS) controller IC for low power applications (up to 12.5 W) and operates directly from the rectified universal mains input. The device includes an emitter switch for driving an external low-cost bipolar power transistor. It has been optimized for flyback converter topologies to provide high-efficiency over the entire load range with ultra-low power consumption in the no-load condition. It provides a circuit for fast start-up directly from the rectified mains voltage without any external bleeder circuits.