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BD42540FJ-CE2 is listed in the Voltage Regulators - Linear, Low Drop Out (LDO) Regulators range at ChipApex. The manufacturer field lists Rohm Semiconductor. Its product description is IC REG LIN POS ADJ 70MA 8-SOP-J. Review the specifications below when checking this part for your BOM.
The BD42540FJ-CE2 is a low quiescent current voltage tracker featuring a 45 V absolute maximum supply voltage and ±10 mV output tracking accuracy. It provides a 70 mA output current with a typical circuit current consumption of 40 µA. The device operates within a wide input range of 3 V to 42 V and supports junction temperatures from -40 °C to +150 °C. It includes integrated overcurrent protection (OCP) and thermal shutdown (TSD) circuits. The component is AEC-Q100 Grade 1 qualified for automotive applications.
Verify the specific suffix CE2 indicates embossed tape and reel packaging when sourcing. Confirm that the ordering code matches the SOP-J8 package variant. Ensure the procurement documentation references the correct automotive forming specifications associated with the C suffix. Cross-check the manufacturer part number against official ROHM databases to avoid counterfeit components.
Select this component for battery-connected systems requiring minimal standby power draw. Ensure the application load does not exceed the 70 mA continuous output limit. Verify that the input voltage remains within the 3 V to 42 V operational window. Consider thermal dissipation requirements based on the dropout voltage and ambient temperature conditions during design.
This device belongs to ROHM's line of linear regulators designed for automotive environments. It functions as a voltage tracker rather than a fixed regulator, allowing the output to follow an adjustable reference input. The SOP-J8 package provides a compact footprint suitable for space-constrained electronic control units in modern vehicles.
BD42540FJ-C
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