TLC5916QDRQ1

Overview

The TLC5916QDRQ1 is an automotive-grade, 8-channel constant-current LED sink driver manufactured by Texas Instruments. It operates within a supply voltage range of 3 V to 5.5 V and supports output currents up to 120 mA per channel. The device features a boost topology with a maximum output voltage of 17 V and a serial interface operating at frequencies up to 30 MHz. Packaged in a 16-pin SOIC-Narrow (D) format, it is qualified under AEC-Q100 standards for automotive applications. The component functions reliably across an extended temperature range from -40°C to +125°C.

Feature Summary

• Integrated boost topology enables driving high-voltage LED strings from low supply voltages
• Automotive qualification ensures reliability in harsh vehicle environments
• Serial interface simplifies control connections and reduces pin count
• Constant current regulation maintains consistent LED brightness

Applications

• Automotive exterior lighting systems
• Interior ambient illumination modules
• Instrument cluster backlighting
• Dashboard indicator arrays

Procurement Notes

Verify the specific suffix 'QDRQ1' confirms both the automotive grade (Q1) and the tape-and-reel packaging variant. Ensure the design accounts for the SOIC-Narrow-16 thermal characteristics given the 125°C maximum junction temperature rating. Cross-reference the datasheet for exact pinout configurations to prevent integration errors during PCB layout.

Selection Notes

Select this component when automotive certification is mandatory for LED control applications. It is suitable for designs requiring independent channel current regulation without complex microcontroller interfaces. Consider the 17 V output limit when determining series LED string lengths. Verify that the 30 MHz serial clock speed aligns with the system's timing requirements.

Part Context

This part belongs to the TLC5916 family of constant-current LED drivers designed for general-purpose and automotive use. The 'Q' prefix denotes automotive qualification, while 'RQ1' specifies the reel packaging and automotive grade. It shares functional similarities with non-automotive variants but includes enhanced testing and documentation for automotive supply chain requirements.

Replacement Considerations

TLC5916ID serves as a commercial-grade alternative lacking automotive qualification. TLC5916IPWRG4 offers the same functionality in a TSSOP package. Verify that any substitute matches the required operating temperature range and voltage specifications before implementation.