TLC59482DBQ

Overview

The TLC59482DBQ is a Texas Instruments integrated circuit featuring sixteen constant-current LED driver channels. It utilizes a 16-bit PWM resolution for precise grayscale control and includes a 6-bit global brightness adjustment mechanism. The device operates within a supply voltage range of 3V to 5.5V, supporting output currents up to 120mA per channel with an internal 17V clamp. Communication is managed via a standard SPI-compatible serial interface, allowing daisy-chaining capabilities. The component is housed in a 44-pin SSOP package.

Feature Summary

• Provides 16-channel constant-current sinking with independent 16-bit PWM dimming control for high-fidelity color reproduction.
• Integrates a 6-bit global brightness register to uniformly adjust output intensity across all channels simultaneously.
• Features an SPI-compatible serial interface that supports cascading multiple devices to drive large LED arrays efficiently.

Applications

• High-resolution LED matrix displays
• Professional stage lighting fixtures
• Architectural accent lighting systems

Procurement Notes

Verify the specific suffix 'DBQ' corresponds to the shrink small-outline package variant when sourcing. Confirm RoHS compliance status and moisture sensitivity level requirements for your assembly process. Ensure the design accounts for thermal dissipation given the 120mA per-channel capability. Cross-reference the datasheet revision to confirm pinout compatibility with existing PCB layouts before finalizing procurement.

Selection Notes

Select this component when 16-bit grayscale precision is required for complex visual effects. The 6-bit global brightness control simplifies system-level intensity management compared to per-channel adjustments. Consider the SPI interface speed and daisy-chain limitations if driving extensive LED networks. Evaluate thermal performance under maximum load conditions to determine adequate heat sinking requirements for the application environment.

Part Context

This part belongs to the TLC594x series of LED drivers from Texas Instruments, designed for demanding display applications. It succeeds earlier models by offering higher resolution and improved current accuracy. The DBQ suffix denotes the specific plastic shrink small-outline package format, distinguishing it from tape-and-reel or other package variants within the same functional family.

Replacement Considerations

TLC59482DBQR serves as the reel-pack equivalent. TLC59482PW offers a wider package option. TLC5946 provides lower 12-bit resolution but similar functionality. Verify pin-to-pin compatibility and software library support before substituting.