BV1LB045FPJ-CE1

Power Distribution Switches, Load Drivers Overview

The BV1LB045FPJ-CE1 is a single-channel automotive-grade low-side switch IC manufactured by ROHM Semiconductor. It features an N-channel output with a typical on-resistance of 45 mΩ and a maximum of 106 mΩ. The device supports a supply voltage range of 3 V to 5.5 V and provides a DC output current of 5 A at 85°C ambient temperature, with an overcurrent limit of 18 A. It includes thermal shutdown with self-restart functionality and operates within a junction temperature range of -40°C to 150°C. The component is housed in a TO-252-J3 package.

Power Distribution Switches, Load Drivers Feature Summary

• Integrated overcurrent protection with fixed current limiting and thermal shutdown with self-restart capability for robust fault management.
• Automotive qualification compliant with AEC-Q100 standards, ensuring reliability for demanding vehicle environments.
• Low standby current consumption designed to minimize power drain during inactive periods.

Power Distribution Switches, Load Drivers Applications

• Power distribution systems in automotive electronic control units
• Driving high-current loads such as solenoids and lamps
• General purpose load switching in 12V automotive architectures

Power Distribution Switches, Load Drivers Procurement Notes

Verify the complete part number including the suffix CE1 to ensure correct packaging and automotive grade specification. Confirm that the TO-252-J3 package footprint matches the target PCB design. Check for RoHS compliance status if required by specific environmental regulations. Ensure the application circuit accounts for the thermal characteristics associated with the specified current ratings.

Power Distribution Switches, Load Drivers Selection Notes

Select this component when a single-channel low-side switch with high current capacity is required for automotive applications. The 45 mΩ on-resistance offers efficient power handling compared to higher resistance alternatives. Consider the 18 A overcurrent limit for protecting downstream loads. Verify that the 3 V to 5.5 V supply range aligns with the system's logic and power levels.

Power Distribution Switches, Load Drivers Part Context

This device belongs to the BV1LB series of intelligent power devices (IPD) from ROHM Semiconductor. These components are specifically engineered for automotive use, offering integrated protection features typically found in more complex driver circuits. The series supports various channel counts and resistance values to suit different load requirements.

Power Distribution Switches, Load Drivers Replacement Considerations

Direct substitutes include other ROHM BV1LB series parts with similar pinouts and electrical characteristics, such as the BV1LB028FPJ-CE1 for lower on-resistance or the BV1LB140FJ-CE2 for SOP-J8 packaging. Verify compatibility with existing thermal management solutions when swapping between packages.

Power Distribution Switches, Load Drivers FAQ

Does the BV1LB045FPJ-CE1 support automatic recovery after a thermal fault?

Yes, the device features a thermal shutdown mechanism with self-restart capability, allowing it to resume normal operation once the junction temperature decreases to a safe level.

What is the maximum drain-source voltage rating for this component?

The maximum drain-source voltage rating is 42 V, which provides sufficient headroom for standard 12V automotive electrical systems.