TLC5923RHBRG4

Overview

The TLC5923RHBRG4 is a 16-channel constant-current sink LED driver manufactured by Texas Instruments. It operates within a supply voltage range of 3.0 V to 5.5 V and supports a data transfer rate of 30 MHz. The device features linear shift register dimming with an output current capability of 80 mA per channel. It is housed in a 32-VQFN (5x5) package, suitable for surface mount installation. The component functions across a temperature range of -40°C to +85°C and includes dot correction capabilities for uniform LED brightness.

Feature Summary

• Provides 16 channels of constant-current sinking for precise LED control
• Integrates dot correction functionality to ensure consistent luminance across all outputs
• Supports high-speed serial data input via a 30 MHz interface
• Features linear shift register architecture for simplified dimming and color mixing

Applications

• LED display panels requiring uniform brightness correction
• Backlighting systems for LCD modules
• General-purpose indicator lighting arrays
• Portable electronic devices with limited power budgets

Procurement Notes

Verify the specific suffix RHBRG4 against the manufacturer's latest datasheet to confirm pinout and thermal specifications. Ensure compatibility with the host controller's voltage levels and serial interface timing. Check for moisture sensitivity labeling if storage conditions exceed specified limits. Confirm that the 32-VQFN footprint matches the PCB design guidelines provided in the official package drawing.

Selection Notes

Select this component when a high channel count with integrated dot correction is required. It is suitable for applications needing 80 mA per channel without external current-setting resistors. Consider the 30 MHz speed for high-refresh-rate displays. Evaluate the VQFN package size against available board space constraints compared to HTSSOP alternatives.

Part Context

This part belongs to the TLC5923 family of 16-channel LED drivers from Texas Instruments. It is designed as a cost-effective solution for driving LEDs in portable and industrial applications. The RHBRG4 designation indicates a specific tape-and-reel packaging variant within the VQFN-32 form factor, optimized for automated assembly processes.

Replacement Considerations

Direct substitutes include other parts within the TLC5923 series such as the TLC5923RHBT or TLC5923RHBR. Verify electrical parameters and package dimensions before substitution. Cross-reference with TLC5946 variants if additional fault detection features are required, noting potential pinout differences.