TLC5949DBQ

Overview

The TLC5949DBQ is a Texas Instruments LED driver featuring 16 channels with 12-bit ES-PWM resolution. It includes full self-diagnosis capabilities, 7-bit global brightness control, and status information data. The device supports LED open and short detection. It operates on a 3.3 V supply within a -40°C to 85°C temperature range. The component utilizes a serial interface and is housed in a 24-SSOP package.

Feature Summary

• Integrates full self-diagnosis functionality for system reliability monitoring
• Provides 12-bit per-channel pulse-width modulation for precise dimming control
• Includes dedicated hardware detection for LED open and short circuit faults

Applications

• LED signage displays
• Architectural lighting systems
• General illumination control panels

Procurement Notes

Verify component availability as the TLC5949DBQ is listed as obsolete by the manufacturer. Confirm that substitute part numbers, such as the TLC5949DBQR, meet all original electrical and mechanical specifications before integration into new designs. Ensure sourcing channels provide valid documentation for the specific revision.

Selection Notes

Select this component for applications requiring high-resolution 12-bit PWM dimming across multiple channels. The integrated self-diagnosis and fault detection features make it suitable for critical infrastructure where maintenance access is limited. Verify compatibility with the host controller's serial interface timing requirements.

Part Context

This device belongs to the Texas Instruments LED driver family designed for complex lighting arrays. It combines constant-current sinking with advanced diagnostic reporting. The SSOP package allows for surface-mount assembly in space-constrained PCB layouts typical of commercial display and lighting equipment.

Replacement Considerations

The TLC5949DBQR is identified as a parametric equivalent substitute. Verify pinout and thermal characteristics match the original design constraints before implementation.