TLC5941PWPR

Overview

The TLC5941PWPR is a 16-channel constant current sink LED driver manufactured by Texas Instruments. It operates within a supply voltage range of 3 V to 5.5 V and delivers up to 80 mA per channel with an output voltage capability of 17 V. The device features 12-bit grayscale PWM control for dimming and includes dot correction capabilities. It utilizes a serial interface topology and is housed in a 28-HTSSOP package.

Feature Summary

• Provides 16 independent constant current sink channels for LED driving applications
• Integrates 12-bit grayscale pulse width modulation for precise brightness control
• Includes internal dot correction mechanisms to ensure uniform luminance across channels

Applications

• Backlight systems for displays
• Signage and advertising boards

Procurement Notes

Verify the specific suffix 'PWPR' indicates tape-and-reel packaging distinct from tube variants. Confirm the operating temperature range aligns with system requirements, as automotive or industrial grades may differ. Ensure ESD handling protocols are followed due to moisture sensitivity classification. Cross-reference the manufacturer part number against distributor listings to validate authenticity and current production status before finalizing procurement orders.

Selection Notes

Select this component when a linear shift register topology with integrated PWM dimming is required. It is suitable for designs needing high channel density in a compact surface-mount footprint. Consider thermal dissipation constraints given the 80 mA per channel rating. Verify that the serial input interface matches the controller's communication protocol for seamless integration into the display drive architecture.

Part Context

This part belongs to the TLC5941 family of LED drivers from Texas Instruments. It serves as a specialized solution for managing multiple LED outputs in display applications. The PWPR suffix specifically denotes the reel packaging format, distinguishing it from other physical package options like HTSSOP tubes or QFN variants within the same functional series.

Replacement Considerations

TLC5941PWP (Tube variant)

FAQ

What is the maximum output current per channel?

The TLC5941PWPR supports a maximum output current of 80 mA per channel.

Does the device support grayscale dimming?

Yes, it integrates 12-bit grayscale pulse width modulation control for each channel.