BD1HC500HFN-CTR

Power Distribution Switches, Load Drivers Overview

The BD1HC500HFN-CTR is a single-channel automotive-grade high-side switch manufactured by ROHM Semiconductor. It operates within a supply voltage range of 4 V to 18 V and delivers a DC output current of 0.5 A at an ambient temperature of 85°C. The device features a maximum on-resistance of 1200 mΩ and includes built-in overcurrent protection with hiccup mode, thermal shutdown, and open load detection circuits. Qualified under AEC-Q100 standards, it supports direct control from CMOS logic ICs and provides diagnostic error flag outputs during fault conditions.

Power Distribution Switches, Load Drivers Feature Summary

• Integrated overcurrent protection circuit with hiccup mode for robust fault management
• Built-in thermal shutdown (TSD) circuit to prevent damage from excessive heat
• Open load detection capability when the output is in the OFF state
• Diagnostic error flag output for monitoring abnormal conditions

Power Distribution Switches, Load Drivers Applications

• Automotive lighting systems
• Solenoid and relay driver circuits
• High-side power distribution in vehicle ECUs

Power Distribution Switches, Load Drivers Procurement Notes

Verify the specific suffix 'CTR' corresponds to the taping packaging format required for your assembly line. Confirm that the AEC-Q100 Grade qualification meets your automotive functional safety requirements. Ensure the HSON8 package dimensions align with your PCB footprint design. Check for any end-of-life notices or alternative recommendations if this part is designated as obsolete or not recommended for new designs.

Power Distribution Switches, Load Drivers Selection Notes

Select this component when a single-channel high-side switch with integrated diagnostics is required for automotive applications. It is suitable for loads requiring up to 0.5 A continuous current. Consider the 1200 mΩ maximum on-resistance for power dissipation calculations. The inclusion of open load detection makes it ideal for safety-critical lighting where fault awareness is mandatory.

Power Distribution Switches, Load Drivers Part Context

This part belongs to ROHM's GEN1 generation of high-side switches designed for automotive use. It is part of the BD1HC series, which focuses on providing essential protection features like overcurrent and thermal shutdown in a compact form factor. The HSON8 package allows for space-efficient mounting on printed circuit boards compared to larger through-hole alternatives.

Power Distribution Switches, Load Drivers Replacement Considerations

The BD1HD500EFJ-C is listed as a related part number but is marked as not recommended for new designs. Verify compatibility with the BD1HC500HFN-C if considering pin-to-pin or functional substitutes within the same family.