TLC5945PWP

Overview

The TLC5945PWP is a 16-channel constant-current sink LED driver housed in a 28-HTSSOP package. It operates on a supply voltage of 3 V to 5.5 V with a maximum power current of 60 mA. Each channel provides individually adjustable 4096-step grayscale PWM brightness control and supports an output current of up to 80 mA per channel, with a maximum output voltage of 17 V. The device functions within a temperature range of -40°C to +85°C.

Feature Summary

• Integrates 16 channels with individual 4096-step grayscale PWM brightness control for precise dimming.
• Includes dot correction capabilities to ensure uniform LED brightness across all channels.
• Features built-in fault detection mechanisms including error flags for LED open and short circuit conditions.

Applications

• LED backlighting systems
• General LED display panels
• High-density LED lighting arrays

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific suffix 'PWP' corresponds to the tube packaging variant rather than the 'PWPR' reel version. Check RoHS compliance status and moisture sensitivity level (MSL) ratings prior to storage and reflow soldering processes to ensure assembly reliability.

Selection Notes

Select this component when 16 independent channels with high-resolution grayscale control are required. Ensure the design accommodates the 28-pin HTSSOP footprint and thermal requirements for surface mount installation. Verify that the system logic interfaces correctly with the serial data input and XLAT pin timing requirements for proper latch operation.

Part Context

This part belongs to the Texas Instruments TLC5945 series of LED drivers. It is functionally similar to the TLC5941 but offers enhanced features such as dot correction. The PWP suffix indicates a tube package configuration, distinct from the tape-and-reel PWPR variant. It serves as a linear shift register-based driver for managing multiple LEDs efficiently.

Replacement Considerations

• TLC5941PWP

FAQ

What is the maximum output voltage per channel?

The maximum output voltage is 17 V.

Does the device support automatic fault detection?

Yes, it includes error flag outputs for detecting LED open and short circuits.