Automotive high-side switch with 2 A continuous rating
The BD1HD500HFN-CTR is a single-channel high-side power switch from ROHM Semiconductor, part of the Automotive, AEC-Q100 series. The output configuration is high-side N-channel, with a 1:1 input-to-output ratio.
Integrated fault protection for harsh environments
On-chip protection includes over-current, over-temperature, and undervoltage lockout (UVLO). The UVLO threshold ensures the switch stays off when the supply drops below the operating range — a common requirement in automotive power distribution where the battery voltage sags during cranking. This covers under-hood and engine-bay deployment where ambient temperatures exceed 105°C and the self-heating from the load adds margin.