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KA3843AC
SMPS Controller
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
Description
The KA3843AC 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.
Also KA3843AC provide low start up current below 0.
3mA and sho...