New Industry Products

Fairchild Introduces CCFL Backlight Inverter Drive ICs For LCD Backlight Systems

January 10, 2008 by Jeff Shepard

Fairchild Semiconductor introduced what it calls the industry’s most integrated CCFL backlight inverter drive ICs which it claims provide space and cost savings, superior system reliability and simplified design for N-N half-bridge, push-pull, and P-N full-bridge LCD backlight inverter designs.

The FAN7316 and FAN7317, featuring a wide input voltage range, and built-in open lamp protection (OLP) and open lamp regulation (OLR) circuit, eliminate up to 30 external components in four lamp circuit inverter designs compared to similar devices on the market. These highly integrated CCFL backlight inverter drive ICs also feature selectable dimming polarity and analog and burst dimming functions, which simplify design and speed time-to-market.

"Fairchild’s FAN7316 and FAN7317 offer the industry’s most comprehensive protection functions, resulting in superior system reliability. By reducing the number of components, these devices specifically address the ever-growing need to reduce overall system cost in LCD designs," said Jay Lee, Director of Fairchild’s Lighting Product Line.

Other features of the FAN7316 and FAN7317 include: eliminating the need for external IC_VCC regulation circuitry and OLP and OLR detection circuitry and P-MOSFET driving circuitry with its wide input voltage range (FAN7316: 4.5 to 24V, FAN7317: 6 to 25.5V) and built-in OLP and OLR detection circuitry (this is said to eliminate up to 30 external components); built-in OLP circuit, open lamp regulation (OLR), short circuit protection (SCP), thermal shutdown (TSD), soft-start and arc protection; a wide input voltage range, selectable dimming polarity, analog and burst dimming mode and PWM dimming by an external pulse signal, the FAN7316 and FAN7317 offer flexibility in designing N-N half-bridge, push-pull and P-N full-bridge LCD backlight inverters.

The FAN7316 and FAN7317 are available in a 20-pin SOIC lead (Pb)-free package that meets or exceeds the requirements of the joint IPC/JEDEC standard J-STD-020C. Both utilize lead-free (Pb-free) terminals and have been characterized for moisture sensitivity in accordance with the Pb-free reflow requirements of the joint IPC/JEDEC standard J-STD-020. All of Fairchild’s products are designed to meet the requirements of the European Union’s Directive on the restriction of the use of certain substances (RoHS).

The units are priced (each, 1000 pieces) as follows: US$1.48 for the FAN7316; $1.55 for the FAN7317. They are available now with a delivery time of 12 weeks ARO.