BUY UC3844BVDG https://www.utsource.net/itm/p/8985730.html
IC REG CTRLR PWM CM 14-SOIC
Description: UC3844BVDG is a high performance fixed frequency current mode controller. It is specifically designed for off-line and DC-to-DC converter applications offering the designer a cost effective solution with minimal external components. Features: Internal Leading Edge Blanking Internal Slope Compensation Precision Reference with 0.5% Max Error Band Under Voltage Lockout with Hysteresis Programmable Soft Start Programmable Oscillator Frequency Programmable Maximum Duty Cycle Programmable Output Dead Time Programmable Line Feed Forward Programmable Current Sense Programmable Over Current Protection Programmable Over Voltage Protection Applications: Off-line and DC-to-DC Converters Uninterruptible Power Supplies Switching Regulators Motor Controls Lighting Ballasts Battery Chargers (For reference only)