L9305EP

Overview

The L9305EP is a configurable monolithic solenoid driver IC designed for automotive applications, featuring four independent channels that can be configured as low-side or high-side drivers. It supports a load voltage range of 5.5V to 19V and delivers a maximum output current of 2A per channel. The device operates within an ambient temperature range of -40°C to 135°C and is housed in a PowerSSO-36 EPU package. It includes integrated current sensing with programmable ranges up to 2A and features fail-safe pre-drivers.

Feature Summary

• Configurable four-channel architecture supporting independent low-side or high-side driver combinations
• Integrated redundant current detection paths eliminating the need for external shunt resistors
• Fail-safe high-side pre-driver with redundant safety enable paths for functional safety compliance
• SPI interface protected by 32-bit CRC for secure configuration and diagnostic status feedback

Applications

• Automatic transmission linear solenoid control
• Electronic stability control (ESC) systems
• Active suspension management
• Braking system ABS valve actuation

Procurement Notes

Verify the specific suffix EP corresponds to the PowerSSO-36 EPU package variant when sourcing. Confirm AEC-Q100 Grade 1 qualification requirements align with target vehicle standards. Ensure SPI communication protocols match the microcontroller interface specifications. Check ISO 26262 ASIL-D system readiness documentation for safety integration. Validate thermal performance under maximum load conditions within the specified operating temperature range.

Selection Notes

Select this component for designs requiring precise current regulation of linear solenoids with high functional safety standards. Consider the integrated redundancy features if external sensing components must be minimized. Evaluate the 13-bit resolution capability against required actuation accuracy. Assess the SPI interface complexity against available controller resources. Verify package compatibility with PCB layout constraints for the PowerSSO-36 form factor.

Part Context

The L9305 belongs to STMicroelectronics' automotive valve driver family, specifically engineered for electromechanical valve control. It complements other power management solutions by providing dedicated current regulation for inductive loads. The device integrates advanced diagnostics and protection features typical of modern automotive PMICs, ensuring reliability in harsh environments while supporting complex control algorithms via serial interfaces.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material.