L9347LF-TR

Power Distribution Switches, Load Drivers Overview

The L9347LF-TR is a quad low-side power switch designed for driving inductive loads such as valves in ABS systems. It integrates two current-regulated channels (2.5A) and two conventional switches (5A). Key electrical parameters include a supply voltage range of 4.5V to 36V, maximum on-resistance of 0.35Ω, and operating temperatures from -40°C to +150°C. The device features short-circuit protection, overtemperature shutdown, and open-load detection.

Power Distribution Switches, Load Drivers Feature Summary

• Integrates two switched current regulators with 10% accuracy and two conventional low-side switches
• Provides comprehensive diagnostics including open-load detection, ground/supply loss monitoring, and status push-pull outputs
• Includes integrated free-wheeling and clamping Z-diodes for inductive load protection

Power Distribution Switches, Load Drivers Applications

• Anti-lock braking system (ABS) valve drivers
• Inductive load switching in automotive chassis systems
• General purpose low-side power distribution

Power Distribution Switches, Load Drivers Procurement Notes

Verify the specific suffix 'LF' indicates lead-free compliance and 'TR' denotes tape-and-reel packaging. Confirm the exact part number against the manufacturer's official datasheet to ensure compatibility with existing designs, as obsolete or discontinued status may affect long-term availability.

Power Distribution Switches, Load Drivers Selection Notes

Select this component when dual current regulation and high-current switching are required in a single package. The PowerSO-36 package offers thermal performance suitable for automotive environments. Ensure the control logic matches the external clock and status interface requirements specified in the technical documentation.

Power Distribution Switches, Load Drivers Part Context

This part belongs to the L9349 family of intelligent power switches. It is specifically optimized for automotive applications requiring robust diagnostic capabilities and high current handling. The device is manufactured by STMicroelectronics and is classified under power switch ICs for power distribution.

Power Distribution Switches, Load Drivers Replacement Considerations

Check for direct substitutes within the L934x series. Verify pinout compatibility and electrical specifications before replacing. Consult the manufacturer's obsolescence notice for recommended alternative parts if this model is discontinued.