LM3432SQ/NOPB

Overview

The LM3432SQ/NOPB is a six-channel LED driver IC designed for backlight applications. It operates as a DC-DC boost converter with an internal switch, supporting input voltages from 6V to 40V and delivering up to 80V output. Each channel provides a constant current of 40mA. The device supports analog and PWM dimming, functions within a junction temperature range of -40°C to 125°C, and is housed in a 24-WQFN (4x5) package.

Feature Summary

• Six independent constant-current channels for precise LED regulation
• Integrated high-efficiency boost topology with internal power switch
• Dual-mode dimming capability supporting both analog and PWM signals

Applications

• LED backlight systems
• Portable electronic displays
• Mobile device illumination

Procurement Notes

Verify component authenticity through authorized Texas Instruments distributors or certified partners. Confirm the specific suffix 'SQ' indicates automotive-grade qualification requirements. Check datasheet revisions for any updates regarding pinout or electrical characteristics before finalizing design integration.

Selection Notes

Select this component for designs requiring multi-channel LED control with integrated boost conversion. Ensure the application voltage range aligns with the 6V to 40V input specification. Consider the 24-WQFN package size for PCB layout constraints and thermal management requirements associated with the 40mA per channel output.

Part Context

This part belongs to the LM3432 family of LED drivers from Texas Instruments. It is specifically engineered for high-efficiency backlighting solutions. The 'SQ' designation typically denotes enhanced reliability standards compared to standard commercial variants, suitable for demanding environments.

Replacement Considerations

LM3432BSQ/NOPB is a documented substitute within the same product family.