The TEA1721AT/N1 is a HV start-up flyback Controller with integrated MOSFET for 5W applications. It operates directly from the rectified universal mains input. The device includes a high voltage power switch (700V) and 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 start-up directly from the rectified mains voltage without any external bleeder circuits. The Burst mode frequency of 430Hz enables no-load power consumption below <10mW at high mains input.
Low power SMPS controller for applications up to 5W
Primary sensing without optocoupler and secondary feedback circuitry
Minimizes audible noise in all operation modes
Jitter function for reduced EMI
Enables no-load power consumption
Very low supply current in no-load condition with energy saver mode
High voltage start-up circuit with zero current consumption during switching
