TLC5946PWR

Overview

The TLC5946PWR is a 16-channel, 12-bit PWM LED driver IC manufactured by Texas Instruments. It operates within a supply voltage range of 3V to 5.5V and features an internal current regulation system with a maximum output current of 40mA per channel. The device utilizes a 28-TSSOP surface-mount package and supports a serial interface clock frequency up to 30MHz. Designed for applications such as backlighting and signage, it includes 6-bit dot correction capabilities to ensure uniform brightness across all channels.

Feature Summary

• Integrates 16-channel constant-current sinks with independent 12-bit pulse width modulation control for precise dimming.
• Includes 6-bit per-channel dot correction functionality to compensate for manufacturing variations and ensure uniform LED brightness.
• Features built-in fault detection mechanisms capable of identifying open or shorted LED conditions on the output channels.

Applications

• LED matrix displays
• General-purpose LED lighting systems
• Signage illumination

Procurement Notes

Verify component authenticity through authorized distributors due to potential counterfeit risks. Confirm that the specific order suffix matches the required tape-and-reel packaging format. Ensure the receiving facility has appropriate electrostatic discharge protection measures in place during handling and storage to maintain device integrity.

Selection Notes

Select this component when a high-density solution for driving multiple LEDs is required without external current-setting resistors. Consider the thermal performance characteristics of the TSSOP package relative to the total power dissipation of the application. Evaluate the serial interface speed requirements against the microcontroller capabilities available in the target design.

Part Context

This part belongs to the TLC5946 family of LED drivers from Texas Instruments. It shares core functional specifications with other variants in the series but differs primarily in its physical package configuration. The PWR suffix specifically denotes the 28-lead Thin Shrink Small Outline Package (TSSOP) variant designed for surface-mount assembly processes.

Replacement Considerations

The TLC5946PW is a pin-compatible alternative offered in a tube package rather than tape and reel. Verify that the change in packaging format aligns with the automated assembly equipment used in the production line before substituting.