TLC5944PWPRG4

Overview

The TLC5944PWPRG4 is a 16-channel, 12-bit PWM LED driver manufactured by Texas Instruments. It features 6-bit dot correction and an integrated pre-charge FET for precise current control. The device operates within a supply voltage range of 3V to 5.5V and supports serial data input. It is housed in a 28-pin HTSSOP package with gull-wing terminals. The component provides linear shift register dimming with a maximum output current of 60mA per channel. It is designed for industrial temperature grades ranging from -40°C to 85°C.

Feature Summary

• Provides 16 independent channels for 12-bit PWM LED dimming control
• Integrates 6-bit dot correction to ensure uniform brightness across LEDs
• Includes an internal pre-charge FET to manage peak current requirements
• Supports serial interface for efficient data transmission and daisy-chaining

Applications

• LED matrix displays requiring high-resolution grayscale control
• Backlighting systems for LCD panels and monitors
• General-purpose LED indicator arrays in industrial equipment
• Architectural lighting control systems with color mixing needs

Procurement Notes

Verify the specific ordering suffix and package variant when sourcing, as availability may vary by distributor. Confirm that the component meets RoHS compliance standards if required for your assembly process. Check for discontinued status or end-of-life notifications from Texas Instruments prior to finalizing design-in decisions. Ensure the selected supplier provides valid traceability documentation for quality assurance purposes.

Selection Notes

Select this component when 16-channel PWM control with hardware-based dot correction is necessary. It is suitable for designs requiring serial data interfaces to minimize microcontroller pin usage. Consider the 28-HTSSOP package constraints for PCB layout space. Evaluate the 60mA per channel limit against total LED current requirements to ensure adequate drive capability without external amplification.

Part Context

This part belongs to the TLC594x family of LED drivers from Texas Instruments. It shares functional similarities with other members like the TLC5940 but adds enhanced correction features. The PWPR suffix indicates a tape-and-reel packaging format optimized for automated surface-mount assembly processes. It serves as a bridge between low-cost microcontrollers and complex LED display architectures.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing firmware logic when considering alternative drivers. Check pinout and electrical specifications against potential cross-reference components to ensure functional equivalence.