ISL9301IRZ-T

Overview

The ISL9301IRZ-T is an automotive-grade, SPI-controlled octal channel driver featuring four configurable high/low side and four low side drivers. It integrates twelve PowerMOS transistors to support PWM load driving with recirculation diodes. The device operates on a battery supply voltage of 5 V to 18 V and a logic supply of 4.75 V to 5.25 V. It provides R_on(max) values of 0.6 Ω for high/low side configurations and 0.3 Ω for low side channels at Tj = 175 °C. The component includes overcurrent diagnostics, open load detection, short circuit protection, and controlled slew rates for EMC improvement.

Feature Summary

• Configurable power stage architecture allowing parallel connection of internal MOSFETs to reduce on-resistance for specific load requirements.
• Integrated diagnostic capabilities including overcurrent, overtemperature, open load, and short-to-ground or VB detection.
• SPI interface enables dynamic configuration of slew rates, overcurrent thresholds, and command execution without external hardware changes.

Applications

• Automotive lighting systems requiring precise PWM control
• Solenoid and valve actuation in chassis control modules
• High-side and low-side load switching in industrial motor drives

Procurement Notes

Verify the manufacturer designation carefully, as the source material identifies this component family under STMicroelectronics (L9301). Ensure the requested Renesas part number corresponds to the correct datasheet and functional specifications before procurement. Confirm that the AEC-Q100 qualification status aligns with your specific automotive application requirements.

Selection Notes

Select this component when a single IC solution is required to drive multiple loads with mixed high-side and low-side configurations. It is suitable for applications needing integrated protection features to simplify board layout. Consider the thermal performance at Tj = 175 °C and the availability of SPI-based control for complex system diagnostics.

Part Context

This component belongs to a class of multi-channel power drivers designed for robust automotive and industrial environments. It replaces discrete MOSFET arrangements by integrating control logic and protection circuits into a single package. The design focuses on reducing component count while maintaining high reliability through comprehensive fault detection mechanisms.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify cross-reference compatibility with other octal channel drivers from different manufacturers based on pinout and electrical specifications.

FAQ

Can the internal PowerMOS be configured for both high-side and low-side operation?

Yes, the device contains four configurable High/Low side drivers and four low side drivers, allowing flexible configuration for various load types.

What protection features are included in the L9301?

It includes overcurrent diagnostics, overtemperature protection, open load detection, and short-to-GND or short-to-VB protection for each channel.