LP8545SQX/NOPB

LED Driver IC Overview

The LP8545SQX/NOPB is a high-efficiency LED backlight driver IC manufactured by Texas Instruments. It features a boost topology with six independent current-regulated outputs, each capable of delivering up to 50 mA. The device operates from a supply voltage range of 2.7 V to 22 V and supports an output voltage up to 40 V. It integrates an internal switch and offers adjustable switching frequencies of 156 kHz, 312 kHz, 625 kHz, or 1.25 MHz. Control is facilitated via I2C interface and PWM dimming inputs. The component is housed in a 24-WQFN package and functions within a temperature range of -30°C to +85°C.

LED Driver IC Feature Summary

• Six-channel constant current regulation for multi-zone LED backlighting applications
• Integrated I2C control interface for programmable current settings and diagnostics
• Supports PWM dimming for precise brightness control without color shift
• Boost converter topology with internal power switch for efficient operation

LED Driver IC Applications

• LCD backlight drivers for mobile devices
• LED lighting systems requiring multi-zone regulation
• Portable electronics with high-efficiency power constraints

LED Driver IC Procurement Notes

Verify the specific suffix 'SQX' against the manufacturer's official documentation to confirm package variant and tape-and-reel specifications. Ensure compatibility with the required I2C address configuration and thermal management requirements for the 24-WQFN footprint. Cross-reference the latest datasheet revision to validate electrical parameters before finalizing procurement orders.

LED Driver IC Selection Notes

Select this component when designing systems requiring independent control of multiple LED strings with low quiescent current. The integrated I2C interface simplifies system architecture by reducing external control logic. Consider the 24-WQFN package size for space-constrained layouts. Verify that the input voltage range aligns with the system's battery or power rail characteristics.

LED Driver IC Part Context

This part belongs to the LP8545 series of LED drivers from Texas Instruments. It is designed specifically for high-efficiency backlighting solutions. The series typically includes variants with different output currents and channel counts. The SQX suffix indicates a specific packaging and reel configuration distinct from other suffixes like SQE.

LED Driver IC Replacement Considerations

LP8545SQE/NOPB is a documented alternative within the same family.