Texas Instruments LP8553 High-Efficiency LED Backlight Driver for Notebooks LP8553TLX/NOPB

The LP8553TLX/NOPB is a high-efficiency LED backlight driver designed for notebook and netbook LCD displays. It features a high-voltage DC/DC boost converter with an input voltage range of 2.7V to 22V, making it suitable for applications powered by 1x to 5x cell Li-Ion batteries. The device includes an integrated FET and offers four adjustable current sinks, allowing for precise control of LED brightness. Brightness control can be achieved through programmable PWM with resolutions ranging from 8 to 13 bits, and it supports I¬=C communication for serial control. The LP8553 also incorporates automatic PWM and current dimming to enhance optical efficiency and minimize power consumption. Safety features include LED fault detection for short/open circuits, low input voltage monitoring, and thermal de-rating to prevent overheating. The product is packaged in a compact DSBGA 25-bump package, measuring 2.466 mm x 2.466 mm x 0.6 mm, which helps reduce the number of external components required in designs. This makes the LP8553TLX/NOPB a suitable choice for engineers looking for an efficient and reliable LED driver for portable display applications.