R T/C T (Timing Resistor/ Timing Capacitor) The difference in voltage level is supplied to this pinĪ shunt resistor is used to monitor the current through the circuit, and the voltage across it is provided as a feedback to the current sense pin It is an input to the error amplifier inside the IC. It is normally connected to the voltage feedback pin of the IC through a resistor and capacitor. It is an output pin that outputs low impedance 1MHz signal, based on the difference between the set and current-voltage. This article covers only the 8-Pin version of the IC. Note: UC3842 IC also comes in 14-Pin, 16-Pin, and 20-Pin packages. This blog will provide you the detailed information of UC3845, the PWM controller about its pinout, features, applications, equivalents, where and how to use this device, etc. This IC is specially designed for Off-Line and DC to DC converter applications with minimum external components. UC3842 is a fixed frequency current-mode PWM controller.
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