TLC5973D

Overview

The TLC5973D is a 3-channel, 12-bit PWM constant-current LED driver manufactured by Texas Instruments. It features an EasySet single-wire serial interface operating at up to 3 Mbps. The device supports a supply voltage range of 3 V to 6 V and delivers a maximum output current of 50 mA per channel when VCC exceeds 4.0 V. It utilizes a boost topology with an internal shunt regulator and operates within a temperature range of -40°C to +125°C. The component is housed in an 8-pin SOIC package.

Feature Summary

• Integrates a single-wire serial interface for simplified control connections
• Provides 12-bit grayscale resolution for precise brightness adjustment
• Includes an internal clock generator to reduce external component count

Applications

• LED backlighting systems
• General LED illumination drivers
• Portable electronic display lighting

Procurement Notes

Verify the specific suffix 'D' corresponds to the SOIC-8 package variant rather than other packaging options. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure the selected revision matches the required thermal performance specifications for the intended operating environment.

Selection Notes

Select this component for designs requiring high-resolution grayscale control with minimal interface complexity. The single-wire architecture reduces pin count requirements compared to parallel interfaces. Consider the 50 mA sink capability for direct LED driving without additional transistors in low-power applications.

Part Context

This part belongs to the TLC5973 series of LED drivers from Texas Instruments. It is designed to replace older parallel-interface solutions by offering higher data rates over a single line. The device complements other PMIC offerings by focusing on efficient, multi-channel LED management with integrated regulation.

Replacement Considerations

TLC5973DR