TLC5951RTAR

Overview

The TLC5951RTAR is a Texas Instruments LED lighting driver IC featuring 24 constant-current channels with 12-bit PWM resolution. It operates within a supply voltage range of 3 V to 5.5 V and supports a maximum clock frequency of 33 MHz. The device provides an output current of 40 mA per channel and includes 7-bit dot correction for uniformity. It is housed in a WQFN-40 package and functions reliably across an operating temperature range of -40°C to +85°C.

Feature Summary

• Integrates 7-bit dot correction to ensure consistent LED brightness across all channels.
• Includes fault detection mechanisms such as open LED and short-to-ground detection.
• Supports serial data input for efficient control interface connectivity.
• Provides error flagging capabilities to assist in system diagnostics.

Applications

• LED backlighting systems
• General LED illumination circuits
• Display driver modules

Procurement Notes

Verify the specific suffix RTAR to confirm the WQFN-40 package type and reel packaging configuration. Ensure compatibility with the required operating temperature range and voltage specifications for the target application environment before finalizing procurement decisions.

Selection Notes

Select this component when high channel count and precise grayscale control are required. The 12-bit PWM resolution offers detailed dimming capabilities, while the integrated dot correction simplifies hardware design by reducing external calibration needs compared to standard drivers.

Part Context

This part belongs to the TLC5951 series of LED drivers from Texas Instruments. The series is designed for applications requiring multiple channels of constant current regulation with digital control interfaces, distinguishing it from simpler shift-register-based LED controllers.

Replacement Considerations

TLC5951DAPR is a pin-compatible alternative available in a 38-pin HTSSOP package.