are fixed PWM Controller
for Off-Line and DC to DC converter applications. The internal Circuits
include UVLO, low start up current circuit, temperature compensated reference, high gain error amplifier, current sensing Comparator
and high current totem-pole output for driving a Power MOSFET
provide low start up current below 0.3mA and short shutdown delay time typ. 100ns. The KA3843AC
is 8.4V(on) and 7.6V(off). The KA3843AC
can operate within 100% duty cycle.