IS32LT3181-ZLA3

Overview

The IS32LT3181-ZLA3 is a six-channel linear LED driver IC designed for automotive lighting and touch key applications. It operates within an input voltage range of 6 V to 16 V, delivering a constant output current of 75 mA per channel. The device supports both boost and buck topologies with adjustable output voltage. Key electrical parameters include a maximum supply current of 8 mA, a switching frequency of 1 kHz, and a gain of 36 dB in related audio contexts (note: this specific part is an LED driver). It functions reliably across an extended temperature range from -40°C to +150°C and utilizes an eTSSOP-16 package.

Feature Summary

• Integrates dual intensity control capabilities for precise LED management
• Supports PWM dimming for flexible brightness adjustment
• Includes open LED protection to enhance system reliability
• Designed specifically for automotive lighting and touch key interfaces

Applications

• Automotive interior and exterior lighting systems
• Touch key controllers for vehicle access
• OLED illumination applications requiring constant current drive

Procurement Notes

Verify the component status carefully as sources indicate it may be obsolete or nearing end-of-life. Confirm availability through authorized distributors, noting potential long lead times or discontinuation risks. Ensure the specific ZLA3 suffix matches your design requirements before ordering, as lifecycle changes can impact long-term supply stability.

Selection Notes

Select this component when designing automotive lighting circuits that require six independent channels with linear regulation. It is suitable for applications needing integrated touch key functionality alongside LED driving. Consider the eTSSOP-16 package size and the wide operating temperature range when evaluating thermal management and board space constraints for automotive environments.

Part Context

This part belongs to Lumissil Microsystems' portfolio of LED drivers tailored for the automotive sector. It complements other solutions like the IS32LT3147 and IS31LT3554 by offering a specialized combination of multi-channel driving and touch sensing capabilities. The series focuses on integrating multiple functions into compact packages to reduce system complexity in modern vehicle electronics.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Due to the reported obsolete status, alternative sourcing should focus on existing stock or verified compatible replacements from the manufacturer's current active lineup.