DESCRIPTION
Fixed frequency current-mode PWM controller. It is specially designed for Off Line And DC-to-DC converter applications with minimal external component. This integrated circuit features a trimmed oscillator for precise duty cycle control. a temperature compensated reference, high gain arror amplifier, current sensing comparator, and a high current totempole output ideally suited for driving a power MOSFET.
Protection circuitry includes built in under-voltage lockout and current limiting. 

FEATURES
♦ Automatic Feed Forward Compensation
♦ High Gain Totem Pole Output
♦ Internally Trimmed Bandgap Reference
♦ Undervoltage Lockout with Hysteresis
♦ Low Start Up Current
♦ Optimized for offline converter
♦ Double pulse suppression
♦ Current mode operation to 500KHz