LM3502SQX-25

LED Driver IC Overview

The LM3502SQX-25 is a DC-DC boost converter designed for LED driver applications. It integrates two internal power switches to support dual-channel output configurations, suitable for driving white LEDs in backlight systems. The device operates with an input voltage range of 2.5V to 5.5V and delivers up to 750mA switch current. It features a fixed switching frequency of 1MHz and supports PWM dimming control. The component is housed in a 16-WQFN (4x4) package with an exposed thermal pad, rated for operation between -40°C and +85°C ambient temperature.

LED Driver IC Feature Summary

• Integrates dual internal power switches for efficient step-up conversion
• Supports PWM dimming for precise brightness control
• Fixed high-frequency switching reduces external component size
• Designed specifically for white LED backlight applications

LED Driver IC Applications

• White LED backlighting for mobile devices
• Portable electronic display illumination
• Dual-channel LED driver circuits

LED Driver IC Procurement Notes

Verify the specific suffix '25' corresponds to the required output voltage configuration or internal resistor setting as defined in the official datasheet. Confirm that the 16-WQFN package dimensions match the PCB footprint requirements. Ensure the operating temperature range meets the environmental specifications of the final assembly. Check for RoHS compliance status if required by regulatory standards.

LED Driver IC Selection Notes

Select this component when a compact solution for dual-channel LED driving is needed within a 2.5V to 5.5V input range. Consider the 1MHz switching frequency for minimizing passive component sizes. Evaluate the thermal performance of the WQFN package against the expected power dissipation in the target application. Verify compatibility with PWM dimming signals from the host controller.

LED Driver IC Part Context

This part belongs to the LM3502 family of LED drivers from Texas Instruments. These devices are engineered for portable electronics requiring efficient power management for display backlights. The SQX variant indicates a specific tape-and-reel packaging format suitable for automated surface-mount assembly processes.

LED Driver IC Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Consult the manufacturer's official cross-reference guide for potential alternatives.