Texas Instruments LP8550 High-Efficiency LED Backlight Driver for Notebooks LP8550TLX-A/NOPB

The LP8550TLX-A/NOPB is a high-efficiency LED backlight driver designed for notebook applications. It features a high-voltage DC/DC boost converter with an integrated FET, supporting an input voltage range of 2.7 V to 22 V, making it suitable for powering from 1x to 5x cell Li-Ion batteries. The device offers programmable PWM resolution from 8 to 13 true bits, with additional dithering capabilities for smooth brightness transitions. This driver includes six adjustable current sinks and supports both I¬=C and PWM brightness control. It incorporates automatic PWM and current dimming to enhance optical efficiency and reduce power consumption. The LP8550 also features safety mechanisms such as LED fault detection, low input voltage monitoring, and thermal protection to prevent overheating. With a compact DSBGA package size of 2.49 mm x 2.49 mm, it minimizes the external component count, making it an efficient solution for notebook backlighting needs.