onsemi UC3843BD1G, PWM Controller, 500 kHz 8-Pin, SOIC
5mm, Maximum Duty Cycle: 96%, PWM Controller Type: Current Mode, Width: 4mm.onsemi UC3843BD1G, PWM Controller, 500 kHz 8-Pin, SOIC, Output Current: 1 A, Fall Time: 50ns, Mounting Type: Surface Mount, Topology: Boost, Flyback, Forward, Dimensions: 5 x 4 x 1.