LM3432BSQ/NOPB

Overview

The LM3432BSQ/NOPB is a six-channel LED driver IC manufactured by Texas Instruments. It functions as a DC-DC step-up regulator designed for high-brightness LED applications. The device supports analog and PWM dimming control methods. It features an internal switch and operates within a supply voltage range of 6V to 40V. The maximum output voltage per channel reaches 80V, with a channel current rating of 40mA. The component is housed in a 24-WQFN (4x5) package with exposed pad. It is rated for operation between -40°C and 125°C junction temperature.

Feature Summary

• Six independent output channels for multi-string LED driving
• Integrated boost topology with internal power switch
• Supports both analog and pulse-width modulation dimming

Applications

• LED backlighting systems
• High brightness LED arrays
• General illumination modules

Procurement Notes

Verify component status carefully as the LM3432BSQ/NOPB is listed as obsolete or discontinued by the manufacturer. Confirm availability through authorized distributors or secondary market sources if immediate procurement is required. Ensure that the specific suffix NOPB indicates lead-free and RoHS compliance requirements are met for the target assembly process. Cross-reference datasheet revisions to confirm pinout and electrical characteristics remain consistent with design specifications.

Selection Notes

Select this component for designs requiring multiple LED strings driven from a single boost converter topology. The 40mA per channel limit suits low-to-medium power LED configurations. Consider the 24-WQFN package for space-constrained PCB layouts. Verify that the input voltage range of 6V to 40V aligns with the system power source. Evaluate thermal management needs given the 125°C junction temperature rating and surface mount installation type.

Part Context

This part belongs to the LM3432 family of LED drivers from Texas Instruments. It is categorized under Power Management Integrated Circuits (PMIC) specifically for LED driving. The device integrates control logic and power stages into a single compact package. It serves as a solution for regulating current in series-connected LED strings using a boost architecture.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. As the component is marked obsolete, alternative parts must be identified based on functional equivalence such as six-channel boost LED drivers with similar current ratings and packaging constraints.