LM3502SQX-16/NOPB

Overview

The LM3502SQX-16/NOPB is a Texas Instruments LED driver IC featuring two independent boost channels. It operates with a supply voltage range of 2.5V to 5.5V and delivers up to 400mA per channel at an output voltage of 16V. The device supports PWM dimming and functions as a DC-DC step-up regulator. It utilizes a 16-pin WQFN package for compact integration.

Feature Summary

• Dual-channel architecture providing independent control for separate LED strings
• Integrated high-efficiency boost topology for driving LEDs from low input voltages
• Supports pulse-width modulation (PWM) dimming for precise brightness control

Applications

• Portable electronic display backlighting systems
• LED indicator circuits in consumer devices
• Compact lighting modules requiring dual-zone illumination

Procurement Notes

Verify the specific suffix '16' against the datasheet to confirm the intended output voltage configuration and pinout compatibility. Ensure the operating environment remains within the specified temperature range and that the PCB layout accommodates the thermal requirements of the WQFN package for reliable long-term operation.

Selection Notes

Select this component when a dual-channel solution is required for space-constrained designs. It is suitable for applications needing independent LED control without external microcontrollers for basic switching. Consider the maximum output current limits and input voltage headroom to ensure stable regulation under varying load conditions.

Part Context

This part belongs to the LM3502 family of LED drivers designed for portable applications. It integrates power switches and control logic into a small footprint, reducing the need for external components compared to discrete solutions. The NOPB designation indicates compliance with environmental standards.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.