LP8556SQ-E09/NOPB

LED Driver IC Overview

The LP8556SQ-E09/NOPB is a six-channel high-efficiency LED backlight driver from Texas Instruments, utilizing a boost topology. It operates within an input voltage range of 2.7 V to 20 V and delivers up to 23 mA per channel. The device supports adjustable switching frequencies of 312 kHz, 625 kHz, and 1.25 MHz, with output voltages ranging from 16 V to 34.5 V. Packaged in a WQFN-24 format, it functions between -30°C and +85°C, featuring I2C and PWM control interfaces for precise current regulation.

LED Driver IC Feature Summary

• Six independent current mode outputs for multi-zone backlighting
• I2C and PWM control interfaces for digital dimming and configuration
• Adjustable switching frequency options to optimize efficiency and EMI
• Integrated enable/shutdown functionality for power management

LED Driver IC Applications

• High-efficiency LED backlight drivers for mobile devices
• Multi-zone LED lighting systems requiring precise current control
• Portable electronics with space-constrained WQFN-24 packaging requirements

LED Driver IC Procurement Notes

Verify the specific suffix E09 against the official datasheet to confirm pinout and thermal pad configurations. Ensure the WQFN-24 package matches the target PCB footprint. Confirm RoHS compliance status through the manufacturer's documentation before finalizing procurement specifications.

LED Driver IC Selection Notes

Select this component when designing systems requiring six independent LED channels with high efficiency. The WQFN-24 package suits applications with strict spatial constraints. Verify that the required output voltage range (16 V to 34.5 V) aligns with the LED string configuration and that the 23 mA output current meets the brightness requirements.

LED Driver IC Part Context

This part belongs to the LP8556 series of LED lighting drivers. It shares core architectural features with variants like LP8556SQE-E00/NOPB but differs in specific ordering suffixes which may indicate distinct packaging or testing criteria. The SQ designation typically denotes a specific package variant within the broader family.

LED Driver IC Replacement Considerations

LP8556SQX-E09/NOPB offers similar electrical characteristics but utilizes a DSBGA-20 package instead of WQFN-24. LP8556SQE-E00/NOPB is a direct functional equivalent within the same package type. Verify pin compatibility and thermal performance when substituting.