Rochester Electronics PMIC - Voltage Regulators - DC DC Switching Controllers UC3842D

The UC3842D is a current-mode PWM controller optimized for off-line and DC-to-DC converter applications. It features a low start-up current of less than 1mA, automatic feedforward compensation, and pulse-by-pulse current limiting, which enhances load-response characteristics. The device includes an undervoltage lockout with hysteresis and double-pulse suppression, making it suitable for various power supply designs. It operates at frequencies up to 500kHz and has a high-current totem-pole output stage designed for driving N-channel MOSFETs. The UC3842D is specified for operation within a temperature range of 0¬8C to 70¬8C and is available in a 14-pin SOIC package. This product is ideal for engineers looking for a reliable and efficient solution for switching regulators and transformer-coupled DC-DC converters.