The UC3842B series are high performance fixed frequency current mode controllers. They are specifically designed for Offˆ’Line and DCˆ’DC converter applications offering the designer a costˆ’effective solution with minimal external components. These integrated circuits feature a trimmed oscillator for precise duty cycle control, a temperature compensated reference, high gain error amplifier, current sensing comparator, and a high current totem pole output ideally suited for driving a power MOSFET.
The product datasheet is available here to view
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