TLC59401RHBT

Overview

The TLC59401RHBT is a Texas Instruments LED lighting driver IC featuring 16 constant current outputs in a 32-VQFN package. It operates on a 3V to 5.5V supply with a maximum output voltage of 17V and per-channel current of 120mA. The device utilizes a linear topology with a shift register interface, supporting a 30MHz clock frequency. It functions within a temperature range of -40°C to +85°C.

Feature Summary

• Integrates 16 independent constant current sink channels for precise LED control
• Supports grayscale PWM dimming via internal clock generation
• Includes thermal shutdown protection for enhanced operational safety

Applications

• LED backlighting systems
• Signage displays
• General LED illumination

Procurement Notes

Verify the specific suffix 'RHBT' corresponds to the tape-and-reel packaging variant rather than cut-tape or other configurations. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure the 32-VQFN footprint matches the target PCB layout dimensions and thermal pad requirements for proper heat dissipation.

Selection Notes

Select this component when a 16-channel solution with integrated grayscale control is required. The linear topology suits applications where efficiency losses are acceptable for simplified design. Compare against boost-topology drivers if higher output voltages or improved power efficiency are critical for the specific LED string configuration.

Part Context

This part belongs to the TLC59401 series, designed specifically for LED lighting driver applications. It provides a compact solution for managing multiple LEDs with individual current control. The VQFN package facilitates surface-mount assembly in space-constrained electronic designs requiring reliable LED regulation.

Replacement Considerations

TLC59401RHBR is a verified substitute offering identical electrical specifications with a reel packaging option.