San Jose, Calif. - Fairchild's FAN7310 is a full-bridge inverter/driver IC with PWM controller in an SSOP-20 that's designed as a parts- and space-savings solution for display backlighting. In a typical application, it's used with external MOSFETs in a resonant-converter circuit (~5 watts at 10 mA) to power four CCFLs (cold-cathode fluorescent lamps) that backlight a portable system's liquid-crystal display (LCD).
The FAN7310 features analog and burst-dimming modes, open-lamp protection, and advanced phase-shift control for improved thermal characteristics. The chip's shunt regulator allows operation across a wide input-voltage range (5-24 volts). Other features include soft-start, under-voltage lockout, and provision for synchronizing circuit operation/switching frequency (30 to 250 kHz, depending on the CCFL and the transformer characteristics) to an external input.
The FAN7310 is priced at $2.75 each in 1k pieces. Samples are available now with production quantities available in 8 weeks. Delivery is 8 weeks ARO.