The SC4808A/B is a dual-ended, high speed, highly integrated PWM controller that is optimized for applications requiring minimum space. The device is easily configurable for Current or Voltage operation and contains all the control circuitry required for isolated applications, where a secondary side error amplifier is used. Although simple in use, the SC4808 is fully featured and requires only a few external components. It features, programmable frequency up to 1MHZ, internal slope compensation, pulse by pulse current limit, a line monitoring input with hysteresis to reduce stress on the power components. An internal ramp on the Current Sense pin allows for slope compensation to be programmed simply by an external resistor. This also allows for operation in voltage mode.