Rochester Electronics PMIC - Voltage Regulators - DC DC Switching Controllers UC3843AD-F

The UC3843AD-F is a current-mode PWM controller optimized for off-line and DC-DC converters. It features a low start-up current of less than 0.5mA and operates at frequencies up to 500kHz. The device includes automatic feedforward compensation, pulse-by-pulse current limiting, and enhanced load response characteristics. It also has undervoltage lockout with hysteresis and double pulse suppression, making it suitable for various applications such as switch mode power supplies, DC-DC converters, and industrial power supply units. The UC3843AD-F is part of a pin-for-pin compatible family, offering improved performance over previous versions.