TLC5971PWPR

Overview

The TLC5971PWPR is a 12-channel, 16-bit Enhanced Spectrum Pulse Width Modulation (ES-PWM) RGB LED driver manufactured by Texas Instruments. It integrates a 3.3V linear regulator and operates within a supply voltage range of 3.1 V to 3.5 V. The device features an HTSSOP-20 package with a maximum power dissipation of 3.121 W. It supports output currents of ±2 mA and functions across a temperature range of -40°C to +85°C. Key electrical specifications include a maximum supply current of 4 mA and high-resolution grayscale control for precise color rendering in display applications.

Feature Summary

• Integrates internal grayscale clock and enhanced spectrum PWM technology for improved visual quality.
• Includes fault detection mechanisms such as LED open detection and power good/error flags.
• Features an integrated 3.3V linear regulator to simplify power supply design.

Applications

• RGB LED matrix displays
• Backlighting for LCD panels
• General-purpose LED indicator systems

Procurement Notes

Verify the specific suffix 'PWPR' corresponds to the HTSSOP-20 package and tape-and-reel configuration. Confirm RoHS compliance status through official manufacturer documentation. Ensure the operating environment remains within the specified -40°C to +85°C temperature range. Validate that the system power supply adheres to the 3.1 V to 3.5 V input requirements to maintain proper regulator function and signal integrity.

Selection Notes

Select this component when 12 independent channels with 16-bit resolution are required for RGB applications. The integrated 3.3V regulator reduces external component count compared to variants lacking this feature. Consider the HTSSOP-20 package constraints for PCB layout. Verify compatibility with existing shift register topologies if cascading multiple drivers is necessary for larger displays.

Part Context

This part belongs to the TLC5971 series of LED display drivers from Texas Instruments. It is designed for high-performance RGB lighting where accurate color reproduction is critical. The ES-PWM technology distinguishes it from standard PWM drivers by reducing visible flicker and improving grayscale linearity. It serves as a specialized solution for compact display modules requiring precise current control.

Replacement Considerations

Check for direct pin-compatible alternatives within the same family, such as the TLC5971PWP, noting differences in packaging and reel specifications. Ensure any substitute maintains the 16-bit ES-PWM capability and integrated regulator functionality to avoid circuit redesign.

FAQ

What is the purpose of the ES-PWM technology in this driver?

Enhanced Spectrum PWM improves grayscale linearity and reduces visible flicker, resulting in smoother color transitions and higher visual quality for RGB LEDs.

Does the TLC5971PWPR require an external 3.3V regulator?

No, the device includes an integrated 3.3V linear regulator, which simplifies the power supply design by eliminating the need for an external regulator component.