UC3843AD8TR TI DC DC Switching Controllers

The UC3843AD8TR is a high-performance fixed frequency current-mode PWM controller from Texas Instruments in SOIC-8 package , designed for DC-DC converter applications with UVLO thresholds of 8.5 V (turn-on) and 7.6 V (turn-off). For selection, verify maximum duty cycle approaching 100%, trimmed oscillator for precise frequency control up to 500 kHz, high-current totem pole output (1-A peak) for driving MOSFETs, low start-up current (<0.5 mA), current limiting with cycle-by-cycle control, and operating temperature from 0°C to +70°C. Features include automatic feed-forward compensation, pulse-by-pulse current limiting, and internally trimmed bandgap reference. Ideal for DC-DC converters (buck, boost, flyback, forward), battery-powered equipment, automotive DC-DC converters, LED drivers, and any low-to-mid power conversion requiring current-mode PWM control. In stock at HL Electronics – request a quote for fast delivery.