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UC3843A SMPS Controller

UC3843A Description

www.fairchildsemi.com UC3842A/UC3843A SMPS Controller .
The UC3842A/UC3843A are fixed PWM controller for OffLine and DC to DC converter applications.

UC3843A 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 Desc

UC3843A 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 UC3842A/ UC3843A provide low start up current below 0.3mA and short shutdow

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Fairchild Semiconductor UC3843A-like datasheet