LP39542TLX/NOPB

LED Driver IC Overview

The LP39542TLX/NOPB is an LED driver IC manufactured by National Semiconductor. It functions as a DC-DC step-up (boost) regulator designed for driving multiple LEDs. The device features 13 outputs and supports PWM dimming capabilities. It provides a switch current of 900mA. The component is housed in a 36-pin uSMD package.

LED Driver IC Feature Summary

• Integrates a DC-DC boost converter with 13 independent output channels for multi-LED arrays
• Supports Pulse Width Modulation (PWM) dimming for precise brightness control
• Delivers up to 900mA switch current capability

LED Driver IC Applications

• Backlighting systems for mobile devices
• Multi-string LED lighting modules
• Portable electronic display illumination

LED Driver IC Procurement Notes

Verify the manufacturer designation matches National Semiconductor or its successor entities, as corporate structures have changed. Confirm the suffix NOPB indicates lead-free compliance. Ensure the package type corresponds to the specified 36-pin uSMD configuration. Cross-reference the part number against official distributor catalogs to confirm authenticity and availability status before procurement.

LED Driver IC Selection Notes

Select this component when a high-output count LED driver is required within a compact form factor. The 13-channel architecture suits applications needing uniform current distribution across multiple strings. Consider the 900mA current rating relative to total LED load requirements. Verify that the boost topology aligns with the input voltage range and forward voltage drop of the target LED array.

LED Driver IC Part Context

This part belongs to the LP3954 series of LED drivers from National Semiconductor. These components are engineered for portable electronics requiring efficient power management. The series typically integrates protection features and control interfaces suitable for battery-powered devices. The LP39542 variant specifically addresses higher channel count applications compared to lower-output models in the family.

LED Driver IC FAQ

What is the maximum switch current provided by the LP39542?

The device provides a switch current of 900mA.

How many output channels does this LED driver support?

The LP39542TLX/NOPB features 13 independent outputs.