Current Mode PWM Controller 1A 8-Pin SOIC N T/R

The KA3883C is a fixed PWM controller for Off Line and DC to DC converter applications. The internal circuits include an UVLO, a low start up current circuit, a temperature compensated reference, a high gain error amplifier, a current sensing comparator, and the high current totem-pole output for driving a POWER MOSFET. Also the KA3883C provides low start-up current below 0.3mA and short shutdown delay time typ. 100ns. The KA3883C is 8.4V(on) and 7.6V(off). The KA3883C can operate within 100% duty cycle.

• Low Start Current 0.2mA (Typ)
• Operating Range Up To 500kHz
• Cycle by Cycle Current Limiting
• Under Voltage Lock Out With Hysteresis
• Short Shutdown Delay Time: Typ.100ns
• High Current Totem-Pole Output
• Output Swing Limiting: 22V