TLC5925IDBQR

Overview

The TLC5925IDBQR is a low-power LED lighting driver IC from Texas Instruments featuring 16 constant current sink channels. It utilizes a boost topology to drive LEDs with an output current of 45 mA per channel and a maximum output voltage of 17 V. The device operates on a supply voltage between 3 V and 5.5 V, with a switching frequency of 30 MHz. It is housed in a QSOP-24 package and supports an operating temperature range from -40°C to +125°C.

Feature Summary

• Integrates 16 independent constant current sink channels for uniform LED brightness control
• Includes internal boost converter topology to support higher voltage LED loads
• Provides thermal shutdown protection to safeguard the device during overheating conditions

Applications

• LED backlighting systems requiring high reliability
• Portable electronic devices with limited power budgets
• General-purpose LED indicator arrays

Procurement Notes

Verify the specific suffix IDBQR corresponds to the QSOP-24 package and industrial temperature grade (-40°C to +125°C). Confirm RoHS compliance status through official manufacturer documentation before integration. Ensure design accounts for the specified 45 mA output current capability and 30 MHz switching frequency requirements.

Selection Notes

Select this component when 16-channel constant current sinking is required within a compact QSOP-24 footprint. It is suitable for applications needing operation up to 125°C ambient temperature. Compare against the TLC5925IPWR if a TSSOP-24 package is preferred instead of QSOP-24.

Part Context

This part belongs to the TLC5925 series of low-power LED drivers. It shares functional similarities with other members like the TLC5928 but differs in specific features such as open detection capabilities found in later variants. The IDBQR designation specifically identifies the industrial temperature range and QSOP-24 packaging configuration.

Replacement Considerations

TLC5925IPWR offers identical electrical performance in a TSSOP-24 package.