TLC5917ING4

Overview

The TLC5917ING4 is an 8-bit constant-current LED sink driver manufactured by Texas Instruments. It features a boost topology with eight output channels capable of delivering up to 120 mA per channel. The device operates within a supply voltage range of 3 V to 5.5 V and supports a switching frequency of 30 MHz. It provides an output voltage capability of 20 V and includes thermal shutdown protection. Packaged in a 16-pin PDIP, it functions as a linear LED lighting driver IC.

Feature Summary

• Provides constant current regulation for multiple LED channels
• Integrates short detection capabilities for VLED lines
• Includes thermal shutdown protection for operational safety

Applications

• LED display systems requiring constant current sinking
• General LED illumination drivers
• Portable electronic devices with limited power budgets

Procurement Notes

Verify the package type matches the required 16-pin DIP configuration. Confirm that the operating temperature range meets the application's environmental specifications. Ensure the input voltage requirements align with the system's power supply rails. Check for RoHS compliance status if restricted substances are a concern. Validate the manufacturer part number against official Texas Instruments documentation.

Selection Notes

Select this component when an 8-channel constant current sink is required with integrated boost functionality. Consider the 120 mA output limit per channel for load sizing. Evaluate the 30 MHz switching frequency against noise constraints. Compare the PDIP package against available surface-mount alternatives if board space is limited. Verify compatibility with existing control logic levels.

Part Context

This part belongs to the TLC5917 series of LED drivers from Texas Instruments. It serves as a specialized solution for driving LEDs where constant current is critical for brightness uniformity. The series typically offers variations in packaging and pinout configurations while maintaining core driver functionalities.

Replacement Considerations

The TLC5917IN is a documented substitute part number offering identical electrical characteristics in a different package format.