BD1LB500EFJ-CE2

Power Distribution Switches, Load Drivers Overview

The BD1LB500EFJ-CE2 is a single-channel low-side power switch IC designed for automotive applications, manufactured by ROHM Semiconductor. It operates within a supply voltage range of 3.5 V to 5.5 V and delivers an output current of up to 800 mA with a maximum current limit of 1.5 A. The device features a typical on-resistance of 350 mΩ and a maximum of 450 mΩ. It supports a drain-source voltage of 42 V and handles a single pulse energy of 25 mJ at 25°C. The component functions across a junction temperature range of -40°C to +150°C and is housed in an HTSOP-J8 package.

Power Distribution Switches, Load Drivers Feature Summary

• Integrates built-in overcurrent limiting circuitry to protect against short circuits and overload conditions.
• Includes thermal shutdown protection that automatically restarts the device after cooling to prevent damage from overheating.
• Features open load detection capability when the output is in the OFF state to identify wiring faults.

Power Distribution Switches, Load Drivers Applications

• Automotive lighting systems
• Fan and motor control circuits
• General purpose load switching in vehicle electronics

Power Distribution Switches, Load Drivers Procurement Notes

Verify the specific suffix CE2 to confirm the packaging format and tape-and-reel configuration. Ensure compatibility with automotive functional safety requirements, as this part is classified as FS supportive. Confirm RoHS compliance status through official documentation before integration into production designs.

Power Distribution Switches, Load Drivers Selection Notes

Select this component for applications requiring a robust low-side switch with integrated fault protection. The wide operating temperature range and high surge capability make it suitable for harsh automotive environments. Consider the 350 mΩ typical on-resistance for efficiency calculations and ensure the load current remains within the 800 mA continuous limit.

Power Distribution Switches, Load Drivers Part Context

This device belongs to ROHM's GEN1 generation of automotive low-side switches. It is designed to support functional safety analysis and meets AEC-Q100 qualification standards. The HTSOP-J8 package provides a compact footprint with enhanced heat dissipation characteristics suitable for surface mount assembly in space-constrained automotive modules.

Power Distribution Switches, Load Drivers Replacement Considerations

The BD1LB500EFJ-C is listed as an alias or predecessor model. However, the BD1LB500EFJ-CE2 is designated as the recommended part for new designs, while the C variant may be restricted to existing customers. Verify pinout and electrical specifications match before substitution.