LP8552TLE

LED Driver IC Overview

The LP8552TLE/NOPB is a high-efficiency LED backlight driver IC from Texas Instruments, designed for portable applications. It features six independent current-regulated outputs and an integrated boost DC-DC converter. The device operates on an input voltage range of 2.7 V to 22 V with a maximum supply current of 3 mA. Key electrical parameters include a switch frequency of 400 kHz, a minimum operating temperature of -40°C, and a maximum of +85°C. It utilizes a 25-pin DSBGA package.

LED Driver IC Feature Summary

• Integrates a high-efficiency boost DC-DC converter with six independent constant-current channels for LED backlighting.
• Supports flexible control interfaces including I2C for configuration and PWM for dimming adjustments.
• Includes programmable soft-start and adjustable switching frequency to optimize system performance and EMI.
• Features comprehensive protection mechanisms such as thermal shutdown and open/short circuit detection.

LED Driver IC Applications

• LCD backlight drivers for mobile phones
• LED backlighting for portable media players
• Display illumination for handheld navigation devices

LED Driver IC Procurement Notes

Verify the specific suffix (e.g., TLE vs TLX) against the datasheet to ensure correct packaging and tape-and-reel specifications. Confirm RoHS compliance status and check for any recent PCN updates regarding material or assembly changes. Ensure the ordering quantity matches the manufacturer's standard pack sizes to avoid cut-tape premiums.

LED Driver IC Selection Notes

Select this component when designing systems requiring multiple LED strings driven by a single boost converter. The I2C interface allows for dynamic brightness adjustment and fault monitoring. Consider the 25-DSBGA package size constraints and thermal dissipation requirements relative to the ambient operating environment and PCB layout capabilities.

LED Driver IC Part Context

This part belongs to the LP8552 family of high-efficiency LED drivers. It is distinct from other variants like the LP8553 or LP8556 which may differ in output count, topology, or package type. The NOPB suffix indicates lead-free and RoHS-compliant construction, aligning with modern environmental standards for consumer electronics manufacturing.

LED Driver IC Replacement Considerations

Direct substitutes within the same family include LP8552TLX/NOPB, which shares identical electrical characteristics but differs in reel packaging quantity. Verify pinout compatibility before swapping between different package suffixes or variant series.