TLC5946PWP

Overview

The TLC5946PWP is a Texas Instruments LED display driver featuring 16 channels with 12-bit PWM grayscale control. It operates within a supply voltage range of 3 V to 5.5 V and supports a maximum power dissipation of 3.958 W. The device provides a low-level output current of 5 mA and a high-level output current of -1 mA, with a maximum supply current of 45 mA. It is housed in an HTSSOP-28 package and functions reliably across an operating temperature range of -40°C to +85°C.

Feature Summary

• Integrates 12-bit PWM grayscale control for precise brightness adjustment across 16 independent channels.
• Includes hardware-based dot correction circuitry to ensure uniform LED luminance without external processing.
• Provides built-in fault detection capabilities, including open and short circuit monitoring for each channel.
• Features an error flag output to signal internal diagnostic conditions or communication anomalies.

Applications

• LED matrix displays
• Signage systems
• Backlighting applications

Procurement Notes

Verify the specific package variant, as the PWP suffix denotes HTSSOP-28. Confirm RoHS compliance status through official documentation. Check for obsolescence notices or product change notifications prior to finalizing procurement decisions. Ensure design compatibility with required thermal dissipation limits.

Selection Notes

Select this component when 16-channel 12-bit PWM control is required with integrated dot correction. Consider the HTSSOP-28 package constraints for PCB layout. Evaluate thermal performance against the specified power dissipation limit. Compare against similar drivers if higher channel counts or different packaging are needed.

Part Context

This part belongs to the TLC5946 series of LED drivers from Texas Instruments. It is designed for applications requiring high-resolution grayscale control and diagnostic features. The series supports daisy-chaining for expanded channel counts in larger display systems.

Replacement Considerations

TLC5946PWPR is a reel-packaged equivalent. TLC5946PWR is a tape-and-reel alternative. Verify pinout and electrical specifications match before substitution.

FAQ

Does the TLC5946PWP support daisy-chaining?

Yes, multiple TLC5946 devices can be connected in series to expand the number of controlled LED channels.

What is the purpose of the dot correction feature?

Dot correction compensates for manufacturing variations in LED forward voltage, ensuring consistent brightness across all pixels.