TLC5917ID

Overview

The TLC5917ID is an eight-channel constant-current LED sink driver manufactured by Texas Instruments. It operates within a supply voltage range of 3 V to 5.5 V and delivers up to 120 mA per channel. The device features a boost topology with a maximum output voltage of 20 V and a switching frequency of 30 MHz. It is housed in a SOIC-Narrow-16 package and supports serial interface control. The component functions reliably across an extended temperature range from -40°C to +125°C, with a maximum power dissipation of 1.5 W.

Feature Summary

• Provides independent constant-current regulation for eight LED channels
• Integrates internal boost converter for high-voltage LED driving
• Includes thermal shutdown protection for operational safety

Applications

• LED backlighting systems
• General LED illumination circuits
• Portable electronic display drivers

Procurement Notes

Verify the specific suffix 'ID' confirms the SOIC-Narrow-16 package variant when sourcing. Ensure the application design accounts for the 1.5 W power dissipation limit under maximum load conditions. Confirm that the 30 MHz switching frequency aligns with electromagnetic interference requirements for the target system environment.

Selection Notes

Select this component when eight independent constant-current outputs are required in a narrow surface-mount package. The integrated boost capability eliminates external inductor requirements for moderate voltage lifts. Consider the thermal performance constraints due to linear regulation characteristics at higher current loads.

Part Context

This part belongs to the TLC5917 series of LED drivers from Texas Instruments. It is functionally similar to the TLC5917IPW but differs in physical packaging, utilizing a SOIC-Narrow-16 footprint instead of TSSOP-16. Both variants share identical electrical specifications and pinout configurations.

Replacement Considerations

TLC5917IPW serves as a direct package alternative with identical electrical performance.