LM3502SQ-35/NOPB

LED Driver IC Overview

The LM3502SQ-35/NOPB is a step-up converter designed for white LED applications, manufactured by Texas Instruments. It operates within a supply voltage range of 2.5 V to 5.5 V and delivers an output current of 750 mA. The device features a switching frequency of 1 MHz and supports PWM dimming control. It utilizes a boost topology with two outputs and includes internal switches. The component is housed in a 16-WQFN package with dimensions of 4 mm x 4 mm. It functions within a temperature range of -40°C to 85°C.

LED Driver IC Feature Summary

• Integrated step-up converter topology optimized for driving white LEDs
• Supports PWM dimming control for brightness adjustment
• Includes internal power switches to minimize external component count
• High switching frequency enables the use of small passive components

LED Driver IC Applications

• White LED backlighting systems
• Portable electronic device illumination
• General LED lighting driver circuits

LED Driver IC Procurement Notes

Verify component status as this part may be obsolete or discontinued. Confirm availability through authorized distributors or check for valid substitute part numbers if production units are required. Ensure the specific suffix matches design requirements before ordering.

LED Driver IC Selection Notes

Select this component for designs requiring a compact solution for white LED driving. Consider the 16-WQFN package size for space-constrained layouts. Verify that the input voltage range aligns with the system power source and that thermal management meets the specified operating temperature limits.

LED Driver IC Part Context

This device belongs to the LM3502 series of LED drivers from Texas Instruments. It is specifically engineered for high-efficiency step-up conversion in portable applications. The NOPB suffix indicates lead-free packaging compliant with specific environmental standards, distinguishing it from older non-compliant variants.

LED Driver IC Replacement Considerations

Check for active substitutes such as the LM3502SQ-44 or other members of the LM3502 family if the specific -35 variant is unavailable. Verify pin compatibility and electrical specifications when selecting alternative packages or updated revisions.