UC2844BD1013TR ST AC-DC Controllers

The UC2844BD1013TR is a high-performance fixed frequency current-mode PWM controller from STMicroelectronics, designed for off-line and DC-DC converter applications, housed in an 8-pin SOIC package. For selection, verify the supply voltage from 10V to 30V, UVLO thresholds of 16V (turn-on) and 10V (turn-off) for off-line applications, maximum duty cycle of 48% (internal toggle flip-flop limits duty cycle to <50%), and operating temperature from -25°C to +85°C . Features include a trimmed oscillator for precise frequency control up to 500kHz, a high-current totem pole output (1A peak) for driving N-channel MOSFETs, current limiting with latching PWM for cycle-by-cycle control, automatic feed-forward compensation, low start-up current (<0.5mA), and an internally trimmed bandgap reference. The device is specifically optimized for off-line flyback and boost converter topologies requiring isolation . Applications include AC-DC adapters, battery chargers, switched-mode power supplies (SMPS), auxiliary power supplies in industrial equipment, LED drivers, and telecom power systems. In stock at HL Electronics – request a quote for fast delivery.