71 kHz flyback controller — no internal switch, so the external MOSFET choice is yours
The NXP TEA19362T/1J is a GreenChip™ flyback controller for offline isolated power supplies. It runs at a fixed 71 kHz switching frequency and does not integrate the power switch, so you pick the external MOSFET that matches your output power and thermal budget — the controller just drives the gate. Start-up threshold is 14.9 V, and the Vcc supply range spans 0 V to 120 V, which covers the wide bus voltage you see in universal-input flyback designs. The output is isolated, meaning the secondary-side feedback loop crosses the isolation barrier — the controller sits on the primary side.
Fault protection set covers the common failure modes in a flyback
Built-in protection against over-power, over-temperature, and over-voltage handles the three most likely failure paths in a flyback converter: output overload that pushes the transformer past its saturation limit, a hot environment that cooks the controller, and a feedback-loop failure that lets the output climb past the regulation point. Operating temperature range is -25°C to 125°C junction, which puts it in the industrial band — fine for a wall adapter or a board-mounted supply in a ventilated enclosure, but not rated for the -40°C cold crank you'd need in an automotive-grade design.
Package and board-fit for a 10-SOIC layout
The 1.27 mm pitch is standard for SOIC — no fine-pitch tricks, the fan-out is a two-layer job. Surface-mount only. Cut Tape works for a prototype batch of a few dozen boards.
Active lifecycle and compliance status
RoHS3 compliant, so it passes the EU hazardous-substance directive for new product introductions.