ALLEGRO MICROSYSTEMS A8434 6-Channel High Efficiency Charge Pump White LED Driver Manual
Update: 28 September, 2023
The A8434 is a high-efficiency charge pump IC that offers a simple, low-cost white LED driver solution for driving up to six WLEDs in various application configurations. It can be used to backlight a single display with all six LEDs or to backlight multiple displays, such as using four LEDs for the main display and the other two for a sub display or flash/torch. The A8434 utilizes a proprietary control scheme (1×, 1.5×, and 2×) to deliver well-matched WLED current while maintaining high efficiency and low EMI. The WLED current is regulated over the entire range of Li+ battery voltage to provide uniform intensity. The brightness and on/off of the WLEDs for the main display and sub display/torch can be controlled through 2 single-wire serial interface pins. The A8434 is available in a space-conserving QFN/MLP-16 ES package with a 3×3 mm footprint. Applications include white LED backlights for cellular phones, PDAs, digital cameras, camcorders, portable audio devices, and MP3 players.
Brand: ALLEGRO
File format: PDF
Size: 447 KB
MD5 Checksum: 0FE88FBA74D56B2E8E36119DBA3B4A83
Publication date: 04 May, 2012
Downloads: -
PDF Link: ALLEGRO MICROSYSTEMS A8434 6-Channel High Efficiency Charge Pump White LED Driver Manual PDF