FSQ500L

The FSQ500L is an Integrated Power Switch Pulse Width Modulator with 130kHz frequency and no bias winding for 2.5W offline fly-back converters. It is specially designed for a replacement of linear power supplies. This device combines current-mode Pulse Width Modulator (PWM) with a sense-FET. The integrated PWM controller features a fixed oscillator, under voltage lockout (UVLO) protection, overload protection (OLP), leading-edge blanking (LEB), an optimized gate turn-ON/OFF driver, thermal shutdown (TSD) protection with hysteresis and temperature-compensated precision-current sources for loop compensation. When compared to a linear power supply, the FSQ500L device reduces total size and weight, while increasing efficiency, productivity and system reliability. This device provides a basic platform for fly-back converters.

• Internal start-up switch
• Soft-start time tuned by external capacitor
• Pulse-by-pulse current limit
• Auto-restart mode
• No need for auxiliary bias winding
• 130kHz Precision fixed operating frequency

Applications

Consumer Electronics

Warnings

Market demand for this product has caused an extension in leadtimes. Delivery dates may fluctuate. Product exempt from discounts.