TLC5943PWPR

Overview

The TLC5943PWPR is an LED display driver manufactured by Texas Instruments, housed in a 28-HTSSOP package. It provides 16 constant current sink channels with adjustable output currents ranging from 0 mA to 120 mA per channel. The device supports 12-bit grayscale PWM control and includes 6-bit dot correction for uniformity. Operating voltage spans 3 V to 5.5 V, with a maximum supply current of 60 mA. It features fault detection, error flags, and open/short LED diagnostics. The component operates within a temperature range of -40°C to +85°C.

Feature Summary

• Integrates 12-bit PWM grayscale control for precise brightness adjustment across all channels.
• Includes 6-bit dot correction capability to ensure consistent luminance among individual LEDs.
• Provides comprehensive diagnostic functions including error flagging and LED open or short circuit detection.

Applications

• High-density LED matrix displays
• LED backlighting systems requiring uniform brightness
• Signage and advertising display panels

Procurement Notes

Verify the specific ordering suffix 'PWPR' corresponds to the tape-and-reel packaging configuration required for automated assembly processes. Confirm that the HTSSOP-28 package dimensions align with the target PCB footprint. Ensure compliance with RoHS directives and moisture sensitivity levels as specified in the manufacturer's datasheet before finalizing procurement orders.

Selection Notes

Select this component when 16-channel constant current sinking is required alongside high-resolution grayscale control. The integrated dot correction feature makes it suitable for applications demanding high visual uniformity without external calibration hardware. Consider the thermal dissipation capabilities of the HTSSOP package relative to the total power consumption of the connected LED array.

Part Context

This part belongs to the TLC594x series of LED drivers from Texas Instruments, designed for scalable lighting solutions. It shares functional similarities with other members like the TLC5940 and TLC5945 but differs in specific interface requirements or additional features such as pre-charge FETs. It serves as a core driver IC for managing large arrays of LEDs in commercial and industrial display environments.

Replacement Considerations

Direct substitutes include the TLC5940PWPR and TLC5945PWPR, which offer similar 16-channel architectures. Verify pin compatibility and software register configurations when migrating between these variants to ensure seamless integration into existing designs.