TLC5905PAP

Overview

The TLC5905PAP is an 8-channel constant current LED sink driver manufactured by Texas Instruments. It integrates a grayscale controller with 12-bit (4096-level) brightness control and a single-brightness register for each channel, enabling 256-color display capabilities. The device utilizes a serial interface compatible with standard SPI protocols to receive data. It features adjustable output current via an external resistor and includes thermal shutdown protection. The component is housed in a 28-pin TSSOP package.

Feature Summary

• Integrates 12-bit grayscale PWM controllers for precise multi-level brightness adjustment across all channels
• Supports daisy-chaining multiple devices through a standard serial interface for scalable system design
• Provides independent 16-bit constant current sinks per channel with programmable output levels

Applications

• High-resolution LED matrix displays requiring precise color mixing
• Backlighting systems for portable electronic devices
• General-purpose LED indicator arrays with variable intensity requirements

Procurement Notes

Verify the specific suffix 'PAP' against the official Texas Instruments datasheet to confirm the exact package type and temperature rating. Ensure the ordering part number matches the required tape-and-reel or tube configuration as specified in the manufacturer's latest documentation before finalizing procurement.

Selection Notes

Select this component when designing systems that require high-resolution grayscale control without external microcontrollers handling complex timing. It is suitable for applications needing independent current regulation for multiple LEDs. Consider the thermal performance of the TSSOP package relative to the total power dissipation of the connected load.

Part Context

This part belongs to the TLC590x family of LED drivers from Texas Instruments, designed for applications requiring high-density LED control. These drivers are commonly used in consumer electronics and industrial displays where space efficiency and precise light modulation are critical requirements for the overall system performance.

Replacement Considerations

Consult the Texas Instruments cross-reference guide for verified substitutes. Potential alternatives may include other members of the TLC59xx series or comparable drivers from other manufacturers, provided they match the pinout, current capabilities, and interface specifications.