TLC59731D

Overview

The TLC59731D is a 3-channel, 8-bit PWM LED driver with single-wire EasySet interface. It provides 50 mA sink current per channel and operates on 3 V to 6 V supply voltage. The device features internal grayscale clock, shunt regulator, and gamma correction. It supports 256-step brightness control and uses an 8-SOIC package. Operating temperature range is -40°C to 85°C.

Feature Summary

• Single-wire serial interface for simplified connection
• Internal grayscale clock eliminates external timing components
• Built-in shunt regulator for stable current regulation
• Gamma-corrected 8-bit PWM dimming capability

Applications

• LED indicator lighting systems
• Backlight illumination control
• Status display modules
• Portable device LED management

Procurement Notes

Verify component authenticity through authorized Texas Instruments distributors or certified suppliers. Confirm datasheet revision matches the ordered part number. Check RoHS compliance status and moisture sensitivity level before procurement. Ensure packaging type aligns with assembly requirements.

Selection Notes

Select this component when single-wire interface compatibility is required. Consider the 50 mA output current limit for LED applications. Evaluate thermal performance within the specified operating temperature range. Compare with similar drivers if higher channel count or different interface protocols are needed.

Part Context

Part of Texas Instruments' EasySet family of LED drivers. Designed for cost-sensitive applications requiring minimal external components. Offers integrated grayscale control without additional microcontroller processing overhead. Compatible with standard SOIC-8 surface mount packaging for automated assembly.

Replacement Considerations

TLC59731DR serves as the reel-pack equivalent. Verify pinout compatibility before substitution. Confirm electrical parameters match application requirements. Check package dimensions for PCB footprint alignment.