TLC59284DBQR

Overview

The TLC59284DBQR is a Texas Instruments LED lighting driver IC featuring 16 constant current outputs in a 24-SSOP package. It operates on a linear topology with a supply voltage range of 3 V to 5.5 V and delivers up to 45 mA per channel. The device supports a maximum data transfer rate of 35 MHz and provides an output voltage capability of 10 V. It functions within a temperature range of -40°C to +85°C.

Feature Summary

• Provides 16 independent constant current channels for precise LED control
• Integrates internal shift register architecture for serial data input
• Includes built-in LED open detection functionality for fault monitoring

Applications

• Signage illumination systems
• General LED lighting arrays
• Display backlighting modules

Procurement Notes

Verify the specific suffix 'DBQR' corresponds to the 24-SSOP surface-mount package and reel packaging configuration. Confirm that the linear topology and 45 mA output current align with the target application requirements, as boost variants exist within the same family. Ensure compatibility with the required operating temperature range and supply voltage specifications before finalizing procurement.

Selection Notes

Select this component when a linear drive solution is preferred over boost topologies for lower voltage applications. The 45 mA output current suits standard indicator or low-power display LEDs. Consider the 24-SSOP footprint for PCB layout constraints. Verify that the 35 MHz interface speed meets the system's refresh rate requirements without excessive power consumption.

Part Context

This part belongs to the TLC59284 series, designed specifically for high-density LED driving applications. It differs from boost-based counterparts like the TLC5928RGET by utilizing a linear regulator structure, which impacts efficiency and maximum output voltage capabilities. The DBQR suffix denotes the specific tape-and-reel packaging format for automated assembly processes.

Replacement Considerations

Direct pin-to-pin replacements may include other linear drivers from the same family, such as the TLC5929DBQR, though output current ratings differ. Cross-vendor substitutes require careful evaluation of interface timing and thermal management characteristics.