Philips Semiconductors Linear Products Product specification Current-mode PWM controller UC3842 DESCRIPTION The UC3842 is available in an 8-Pin mini-DIP the necessary features to implement off-line, fixed-frequency current-mode control schemes with a minimal external parts count.
This technique results in improved line regulation, enhanced load response characteristics, and a simpler, easier to design control loop.
Topological advantages include inherent pulse-by-pulse current limiting.
Protection circuitry includes built-in undervoltage lock-out and current limiting.
Other features include fully-latched operation, a 1% trimmed bandgap reference, and start-up current less than 1mA.
These...

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