BUY SG3532T https://www.utsource.net/itm/p/676044.html
Linear Voltage Regulator - General Purpose; Package: TO-99;
The SG3532T is a high-performance pulse-width modulation (PWM) controller designed for off-line and DC-to-DC converter applications. It is based on a proprietary BiCMOS process and incorporates a high-voltage power MOSFET driver with a high-speed control section. Features: * Internal high-voltage power MOSFET driver * Internal oscillator * Internal soft-start * Internal over-current protection * Internal under-voltage lockout * Internal over-voltage protection * Internal thermal shutdown * External synchronization Applications: * Switching power supplies * DC-DC converters * Motor control * Uninterruptible power supplies * Battery chargers (For reference only)