TLC5929RGET

Overview

The TLC5929RGET is a Texas Instruments LED lighting driver IC featuring sixteen constant current outputs in a 24-pin VQFN package. It operates on a 3V to 5.5V supply with a maximum output current of 50mA per channel and an output voltage of 10V. The device utilizes a boost topology and supports a clock frequency up to 33MHz. It functions within a temperature range of -40°C to +85°C, offering integrated fault detection and ON/OFF control capabilities for efficient LED management.

Feature Summary

• Provides sixteen individually addressable constant current channels for uniform LED illumination
• Integrates internal boost converter topology to drive LEDs efficiently from low supply voltages
• Includes diagnostic features such as open LED detection and short-to-ground protection
• Supports digital interface control via shift register architecture for simplified system integration

Applications

• General LED lighting applications requiring constant current regulation
• Backlighting systems for displays and signage
• Portable electronic devices utilizing LED indicators or illumination

Procurement Notes

Verify the specific suffix RGET confirms the reel packaging format when ordering. Ensure compatibility with the 24-VQFN footprint during PCB layout. Confirm RoHS compliance status matches project requirements. Validate that the 33MHz operating frequency aligns with the host controller's SPI or similar interface speed limitations before finalizing procurement.

Selection Notes

Select this component when sixteen independent constant current outputs are required in a compact surface-mount package. The boost topology makes it suitable for driving multiple series-connected LEDs from a single low-voltage source. Consider the 50mA per-channel limit for brightness requirements. The VQFN package offers thermal advantages over larger packages like HTSSOP for space-constrained designs.

Part Context

This part belongs to the TLC5929 family of LED drivers from Texas Instruments. It shares core functionality with variants like TLC5929DBQR and TLC5929PWP but differs in packaging. The RGET suffix specifically denotes the tape-and-reel configuration, distinguishing it from tube-packaged alternatives while maintaining identical electrical characteristics and pinout.

Replacement Considerations

TLC5929RGER is a verified substitute with identical electrical specifications but different packaging (cut tape vs. reel). Other family members like TLC5929DBQR offer the same functionality in SSOP packages. Verify pin compatibility and thermal performance when substituting across different package types.