LM3502SQ-35

LED Driver IC Overview

The LM3502SQ-35 is a step-up DC-DC converter designed for white LED applications. It accepts input voltages ranging from 2.5V to 5.5V and provides a fixed 35V output suitable for driving LED arrays. The device features an internal switch capable of handling up to 750mA. It operates within a temperature range of -40°C to 85°C and utilizes a 16-WQFN package.

LED Driver IC Feature Summary

• Fixed 35V output voltage optimized for LED array driving
• Wide input voltage range supporting 2.5V to 5.5V sources
• Integrated high-current internal power switch

LED Driver IC Applications

• White LED backlighting systems
• LED array drivers requiring fixed high voltage
• Portable electronic devices with single-cell battery inputs

LED Driver IC Procurement Notes

Verify the specific suffix (e.g., NOPB) against current manufacturer availability, as this component may be obsolete or subject to lifecycle changes. Confirm RoHS compliance status and lead-free designation directly with authorized distributors or Texas Instruments documentation prior to ordering. Ensure the 16-WQFN package footprint matches your PCB design requirements.

LED Driver IC Selection Notes

Select this part when a fixed 35V boost output is required for LED strings without needing adjustable regulation. It is suitable for designs where input voltage varies between 2.5V and 5.5V. Consider the 750mA internal switch limit for load current requirements. The 16-WQFN package is appropriate for space-constrained surface-mount applications.

LED Driver IC Part Context

This component belongs to the LM3502 family of LED drivers from Texas Instruments. Variants such as the LM3502SQ-44 offer different fixed output voltages (e.g., 44V) while sharing similar topology and package options. The family is characterized by integrated switches and fixed-output configurations tailored for specific LED string lengths in portable electronics.

LED Driver IC Replacement Considerations

Public confirmed substitute part numbers are not available in the provided data. Check for LM3502SQ-44 if a higher output voltage is acceptable, or consult Texas Instruments for current active replacements.