LP8550TLE/NOPB

LED Driver IC Overview

The LP8550TLE/NOPB is a high-efficiency LED backlight driver IC from Texas Instruments, designed for portable applications. It features six independent output channels capable of driving up to 50mA per channel with a maximum output voltage of 40V. The device operates on a supply voltage range of 2.7V to 22V and utilizes a boost topology with an internal switch. Control is managed via I2C interface and PWM dimming signals. It is housed in a compact 25-uSMD (WFBGA) package and supports an operating temperature range of -30°C to 85°C.

LED Driver IC Feature Summary

• Six independent regulated current outputs for precise LED channel control
• Integrated DC-DC boost converter with internal power switch
• Dual-mode dimming support using both I2C digital commands and PWM analog signals
• Compact surface-mount packaging optimized for space-constrained designs

LED Driver IC Applications

• LCD backlight drivers for mobile phones and smartphones
• LED illumination for tablet computers and handheld devices
• Backlight systems for portable media players
• High-efficiency lighting solutions for consumer electronics

LED Driver IC Procurement Notes

Verify the specific suffix 'TLE' against the target PCB footprint, as it denotes the 25-pin WFBGA package variant. Confirm that the design requires the -30°C to 85°C commercial temperature grade rather than the automotive or extended industrial ranges offered by other LP855x family members. Ensure I2C address configuration matches the system bus requirements before finalizing procurement.

LED Driver IC Selection Notes

Select this component when six individually controllable LED channels are required within a small form factor. It is suitable for designs needing a wide input voltage range up to 22V and moderate current levels around 50mA per channel. Consider alternative models like the LP8552 if higher current capacity or different thermal performance is necessary for the application.

LED Driver IC Part Context

This part belongs to the LP8550 series of high-efficiency LED backlight drivers. It shares functional similarities with the LP8551, LP8552, and LP8553, differing primarily in output current capabilities and package options. The series is engineered to replace linear regulators in portable devices to extend battery life through improved power conversion efficiency.

LED Driver IC Replacement Considerations

LP8550TLX/NOPB: Identical function with tape-and-reel packaging instead of cut-tape.