LM3502SQ-16

LED Driver IC Overview

The LM3502SQ-16 is a dual-output DC-DC step-up converter designed for white LED backlight applications. It operates with an input voltage range of 2.5V to 5.5V and supports a switching frequency of 1MHz. The device integrates internal power switches capable of delivering up to 400mA output current per channel. It utilizes a 16-pin LLP package and functions within a temperature range of -40°C to +85°C.

LED Driver IC Feature Summary

• Dual-output architecture for independent LED channel control
• Integrated high-efficiency boost converter topology
• Supports PWM dimming for brightness regulation

LED Driver IC Applications

• White LED backlight drivers for mobile devices
• Portable electronic display illumination systems
• Battery-powered LED lighting modules

LED Driver IC Procurement Notes

Verify component authenticity through authorized channels as the part status may be discontinued or limited. Confirm RoHS compliance and lead-free status against specific datasheet revisions. Ensure packaging specifications match design requirements, noting potential variations in reel or cut tape formats. Validate thermal performance parameters for the target operating environment before final integration.

LED Driver IC Selection Notes

Select this component for designs requiring dual-channel LED drive from a single low-voltage source. Consider the 16-pin LLP package for space-constrained PCB layouts. Evaluate the 400mA switch current limit against total LED load requirements. Ensure input voltage stability remains within the 2.5V to 5.5V operational window for optimal regulator performance.

LED Driver IC Part Context

Part of the LM3502 family of LED drivers from Texas Instruments. Designed specifically for portable electronics requiring efficient white LED backlighting. Shares architectural similarities with other TI boost converters but optimized for multi-segment LED arrays. Part of the broader PMIC portfolio for consumer electronics.

LED Driver IC Replacement Considerations

Check for direct pin-compatible alternatives such as LM3502SQ-44/NOPB for higher current needs. Verify functional equivalence with LM3503 series if analog dimming is required instead of PWM. Consult manufacturer obsolescence notices for end-of-life management strategies.