The SG1845Y is a versatile voltage-mode PWM controller IC that is designed for use in various power supply applications. It operates in a wide input voltage range and can deliver a stable output voltage with high efficiency. The IC features a precision reference voltage source, an error amplifier, a PWM comparator, a voltage-controlled oscillator, and a soft-start circuit. It also includes a switching transistor driver, making it suitable for both isolated and non-isolated power supply designs. The SG1845Y offers adjustable frequency operation, overcurrent protection, overvoltage protection, and thermal shutdown for added reliability and safety. This IC is housed in a standard 8-pin DIP package, making it easy to integrate into existing designs. Overall, the SG1845Y is a reliable and cost-effective solution for power supply applications that require high efficiency and precise voltage regulation
