TLC5941RHBTG4

Overview

The TLC5941RHBTG4 is a 16-channel constant-current sink LED driver manufactured by Texas Instruments. It operates within a supply voltage range of 3V to 5.5V and supports a switching frequency up to 30MHz. Each channel provides individually adjustable grayscale PWM brightness control with 4096 steps and includes dot correction capabilities. The device delivers an output current of 80mA per channel with a maximum voltage rating of 17V. It utilizes a serial data input mode and is housed in a 32-pin QFN package (HVQCCN, LCC32) measuring 5mm x 5mm. The component is designed for surface mount assembly and functions reliably across an operating temperature range of -40°C to 85°C.

Feature Summary

• Integrates 16 channels of constant-current sinking with individual 4096-step grayscale PWM dimming control
• Includes built-in dot correction functionality to ensure uniform LED brightness across the array
• Supports serial data input interface for efficient connection to microcontrollers or shift registers
• Operates with a wide input voltage range and high switching frequency for flexible system design

Applications

• LED display signage systems
• LCD backlight illumination arrays
• General-purpose LED indicator matrices
• Portable electronic device lighting modules

Procurement Notes

Verify the specific suffix 'G4' corresponds to the RoHS-compliant version when sourcing. Confirm the package designation matches the 32-VFQFN exposed pad requirement for your PCB footprint. Ensure the supplier provides the official Texas Instruments datasheet to validate the electrical characteristics against your design specifications. Cross-reference the part number with authorized distributors to avoid counterfeit components.

Selection Notes

Select this component when a 16-channel solution with integrated dot correction and high-resolution grayscale control is required. It is suitable for applications needing precise current matching between channels without external resistor trimming. Consider the serial interface compatibility with your host controller. Evaluate the thermal performance of the QFN package relative to your ambient operating conditions and heat dissipation strategy.

Part Context

The TLC5941 belongs to Texas Instruments' family of linear LED drivers designed for high-density lighting applications. It complements other models like the TLC5940 by offering similar channel counts but with specific interface and packaging variations. This series is engineered to simplify the driving of large LED arrays by integrating current regulation and dimming logic into a single compact IC, reducing board space and component count.

Replacement Considerations

The TLC5940PWP is a related alternative from Texas Instruments with comparable channel counts. Verify pinout compatibility and software register mapping before substitution. Ensure the replacement part meets the same voltage and current requirements for your specific LED configuration.