KA3882C Datasheet PDF - Fairchild

●Description

●The KA3882C/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 KA3882C/KA3883C provides low start-up current below 0.3mA and short shutdown delay time typ. 100ns. The KA3882C has the UVLO threshold of 16V (on) and 10V(off). The KA3883C is 8.4V(on) and 7.6V(off). The

●KA3882C and KA3883C can operate within 100% duty cycle.

●Features

●• 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