TLC5948PWPR

Overview

The TLC5948APWPR is a Texas Instruments LED lighting driver IC featuring 16 constant current outputs with an integrated boost topology. It operates on a supply voltage range of 3 V to 5.5 V, delivering up to 60 mA per channel. The device supports a maximum operating frequency of 33 MHz and provides an output voltage capability of 10 V. Encased in an HTSSOP-24 package, it functions within a temperature range of -40°C to +85°C. Key features include dot correction, PWM control, and LED open detection.

Feature Summary

• Integrates a boost converter topology for driving high-voltage LED loads from low-voltage supplies.
• Provides precise 16-channel constant current regulation with external resistor setting.
• Includes hardware-based dot correction to ensure uniform brightness across all channels.
• Features built-in fault detection mechanisms for identifying open LED conditions.

Applications

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

Procurement Notes

Verify the specific suffix 'PWPR' corresponds to the HTSSOP-24 package and reel packaging configuration. Confirm that the 'A' grade designation meets your thermal and performance requirements. Check RoHS compliance status via official documentation before integration. Ensure input voltage and current settings align with the 3V to 5.5V operational limits defined in the datasheet.

Selection Notes

Select this component when a boost topology is required to drive LEDs from a single low-voltage source. It is suitable for designs needing 16 independently controlled channels with grayscale dimming capabilities. Consider the HTSSOP-24 package constraints for PCB layout. Compare against non-boost variants if external inductors are undesirable or if lower output voltages suffice.

Part Context

This part belongs to the TLC5948A series of LED drivers from Texas Instruments. It is distinct from the TLC5945 and TLC5940 series by its internal boost converter, which allows driving higher voltage LED strings without external power boosts. It shares the 16-channel architecture but differs in power stage design compared to linear drivers like the TLC5928.

FAQ

Does the TLC5948APWPR include an internal boost converter?

Yes, the device integrates a boost topology to generate the necessary voltage for driving LED loads from a lower supply voltage.

What is the maximum output current per channel?

The maximum output current per channel is specified as 60 mA.