PFC/PWM Combination controller with 16V/10V VCC UVLO and 6.75V/3.75V PWM UVLO, 0°C to 70°C 20-PDIP 0 to 70
Power Factor Correction and PWM Controller 0.15mA 115kHz 20-Pin PDIP Tube
Texas Instruments UCC38502NG4 DIP20 DC/DC Controller