L9305EP-TR

Overview

The L9305EP-TR is a monolithic, configurable solenoid driver IC designed for automotive applications. It features four independent channels that can be configured as low-side or high-side drivers with integrated current control loops. The device supports a load voltage range of 5.5V to 19V and delivers up to 2A per channel. It includes redundant current sensing paths, eliminating the need for external shunt resistors. The unit operates within a temperature range of -40°C to 135°C and utilizes a PowerSSO-36 EPU package.

Feature Summary

• Configurable multi-channel architecture supporting independent low-side and high-side driver combinations
• Integrated redundant current sensing paths ensuring accurate measurement without external components
• Programmable current control with fine resolution and selectable dither modulation capabilities
• ISO 26262 compliant architecture featuring fail-safe pre-drivers and robust diagnostic functions

Applications

• Automatic transmission linear solenoid control
• Electronic stability control valve actuation
• Active suspension system management
• Hydraulic pressure regulation in DCT systems

Procurement Notes

Verify the specific suffix 'EP' against official STMicroelectronics documentation to confirm the exact package variant and tape-and-reel configuration. Ensure compatibility with the required SPI interface protocols and fault mapping requirements before integration. Cross-reference the AEC-Q100 Grade 1 qualification status with the latest datasheet revisions to guarantee compliance with automotive reliability standards.

Selection Notes

Select this component when precise current regulation for electromagnetic valves is required in safety-critical automotive environments. The integrated redundancy and ISO 26262 readiness make it suitable for ASIL-D system designs. Consider the available packaging options and thermal performance characteristics relative to the specific PCB layout constraints and operating temperature ranges of the target application.

Part Context

The L9305 belongs to STMicroelectronics' portfolio of automotive valve driver ICs. It is engineered to replace traditional discrete solutions by integrating power transistors, recirculation transistors, and sensing circuits into a single chip. This integration reduces bill-of-materials complexity while enhancing system reliability and diagnostic coverage for modern transmission and chassis control units.

Replacement Considerations

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