A8530

A8530 Ultracompact 6-Channel Backlight and Flash/Torch White LED Driver Features and Benefits ▪ Proprietary adaptive control scheme (1×, 1.5×, 2×) ▪ 0.5% typical LED current matching ▪ 2 separate serial interfaces for dimming control ▪ Drives up to 6 white LEDs (4 display backlight, 2 flash/torch) ▪ 30 mA per LED channel for display backlight ▪ 100 mA per LED channel for flash/torch backlight ▪ 320 mA total output current capability ▪ Low EMI design and soft-start function ▪ Short circuit, overvoltage, thermal shutdown protection ▪ 0.75 mm very thin profile, 3 mm × 3 mm package Package: 16 pin QFN/MLP (suffix ES) Description The A8530 high efficiency charge pump ICs offer a simple, low-cost white LED driver solution for driving four display backlight and two flash/torch/video mode white LEDs. Using a proprietary control scheme (1×, 1.5×, and 2×), the A8530 can deliver well-matched LED current while maintaining the highest efficiency and low EMI. The LED current is regulated over the entire range of Li+ battery voltage to provide uniform intensity. LED brightness and on/off can be controlled for 4 display backlight LEDs and 2 flash/torch LEDs through 2 single-wire serial interface pins. The A8530 is available in a very thin profile (0.75 mm nominal height) 3 mm× 3 mm QFN/MLP 16 pin package. Applications include: ▪ White LED backlights for cellular phones, PDAs ▪ Digital cameras, camcorders ▪ Other portable device white LED backlighting ▪ 320 mA WLED flash/torch Approximate ...