onsemi DC DC Switching Controllers UC3842BD1G

The UC3842BD1G is a high-performance fixed frequency current mode controller designed for Off-Line and DC-DC converter applications. It features a trimmed oscillator for precise duty cycle control, operating at a guaranteed frequency of 250 kHz, with current mode operation capable of reaching 500 kHz. The device includes a temperature compensated reference, a high gain error amplifier, and a current sensing comparator, making it suitable for driving power MOSFETs. Key protective features include undervoltage lockouts with hysteresis, cycle-by-cycle current limiting, and programmable output deadtime. The UC3842BD1G is available in an 8-pin SOIC package and is Pb-free and halide-free. It operates within a temperature range of 0¬8C to 70¬8C and has a maximum junction temperature of +150¬8C. The device is designed to provide a cost-effective solution with minimal external components, making it a viable option for engineers looking to implement efficient DC-DC conversion solutions.