BUY UC3834N https://www.utsource.net/itm/p/483107.html
High Efficiency Linear Regulator
The UC3834N is a high performance current-mode PWM controller manufactured by Texas Instruments. It is a 16-pin DIP package and is designed to provide improved performance and lower external parts count when used in a wide variety of switching power supplies. Features: * High performance current-mode PWM control * Internal oscillator with frequency range of 100 kHz to 500 kHz * Internal soft-start capability * Internal current limit * Internal thermal shutdown * Low start-up current * Low standby current Applications: * Switching power supplies * Battery chargers * DC/DC converters * Motor control * Lighting applications (For reference only)