IS32LT3123-ZLA3-TR

Overview

The IS32LT3123-ZLA3-TR is a quad-channel external N-MOS FET LED controller manufactured by Lumissil Microsystems. It operates within an input voltage range of 4.5 V to 40 V and supports a maximum output current of 900 mA per channel. The device features internal PWM dimming capabilities with 8+4-bit and 8+8-bit dithering modes, alongside a UART interface compatible with CANFD PHY. Designed for automotive applications, it functions reliably across a temperature range of -40°C to +125°C and is housed in a 24-pin eTSSOP package.

Feature Summary

• Integrates internal PWM dimming with high-resolution dithering modes for flicker-free operation
• Features a UART interface specifically designed for compatibility with CANFD PHY protocols
• Supports external N-MOS FET configuration for high-current LED driving

Applications

• Automotive exterior lighting systems
• Interior ambient illumination control
• High-power LED driver modules requiring CAN bus integration

Procurement Notes

Verify the specific suffix ZLA3 against the manufacturer's latest datasheet to confirm pinout and packaging dimensions. Ensure the design accommodates external N-MOS FETs as this IC controls rather than directly drives the load. Confirm UART/CANFD PHY compatibility requirements with the host microcontroller before finalizing the bill of materials.

Selection Notes

Select this component when a quad-channel solution with integrated digital communication via CANFD-compatible UART is required. It is suitable for designs needing precise PWM dimming without external timing components. Consider the thermal management requirements for the eTSSOP-24 package when operating at maximum current levels in enclosed automotive environments.

Part Context

This part belongs to the IS32LT series of linear LED drivers from Lumissil Microsystems. The series focuses on automotive-grade lighting solutions that integrate complex control interfaces directly into the driver IC. This specific model emphasizes high channel count and robust communication protocols for modern vehicle lighting architectures.

Replacement Considerations

No direct public substitute part numbers are confirmed for this specific model. Evaluate alternative quad-channel LED controllers only if they support identical CANFD-compatible UART interfaces and similar external FET drive requirements.

FAQ

Does the IS32LT3123-ZLA3-TR drive LEDs directly?

No, it is a controller that requires external N-MOS FETs to handle the high current loads.

What communication interface does this IC use?

It utilizes a UART interface that is explicitly compatible with CANFD PHY standards.