BUY UC2844DTR https://www.utsource.net/itm/p/8927210.html
IC PWM BST FLYBACK ISO CM 14SOIC
Description: The UC2844DTR is a high performance current mode PWM 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: Wide Operating Supply Voltage Range: 8V to 40V Low Start-up Current: 0.7mA Low Operating Current: 0.7mA Internal Soft Start Internal Leading Edge Blanking Internal Frequency Compensation Low Output Voltage Ripple Programmable Oscillator Frequency Programmable Maximum Duty Cycle Under Voltage Lockout Over Voltage Protection Over Current Protection Applications: Off-Line SMPS DC-DC Converters Battery Chargers Motor Drives (For reference only)