BD4275FPJ-CE2

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The BD4275FPJ-CE2 is a fixed-output linear low-dropout (LDO) regulator manufactured by Rohm Semiconductor. It provides a fixed 5V output with a maximum current capability of 500mA. The device features a high withstand voltage of up to 45V and operates within an input voltage range of 5.5V to 45V. Key electrical parameters include a typical quiescent current of 150µA, a ripple rejection ratio of 60dB at 120Hz, and a maximum dropout voltage of 0.5V at 300mA load. It is housed in a TO-252-J5 surface-mount package.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Integrated single-channel reset circuit that outputs a signal when the regulated voltage drops below a specific threshold.
• Adjustable reset delay time functionality achieved through external capacitor connection.
• Built-in protection mechanisms including thermal shutdown, over-current protection, and under-voltage lock-out.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Automotive electronic systems requiring high-voltage tolerance
• Battery-connected circuits needing low standby current consumption
• Systems utilizing microcontrollers or logic requiring voltage supervision

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify component status as this part may be marked as not recommended for new designs. Confirm availability through authorized distributors as stock levels fluctuate. Ensure compliance with RoHS directives and check for any pending Product Change Notices that may update specifications without altering electrical characteristics before finalizing procurement orders.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this component for applications requiring a 5V fixed output from a high-voltage source up to 45V. It is suitable where integrated voltage monitoring is necessary via the built-in reset function. Consider the TO-252-J5 package for space-constrained surface-mount designs. Evaluate thermal performance given the 500mA output capability and ensure adequate heat dissipation for continuous operation within the specified temperature range.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

This LDO regulator belongs to the BD4275 series designed for automotive and industrial environments. It is AEC-Q100 qualified, ensuring reliability under harsh conditions. The device supports functional safety analysis, making it appropriate for safety-critical automotive applications. It serves as a power management solution for systems demanding stable regulation from high-input voltage rails.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

BD42754FPJ-CE2 is a confirmed substitute offering similar 500mA output and 45V withstand voltage with integrated reset functionality. Verify pin compatibility and thermal requirements when transitioning between these variants to ensure seamless integration into existing PCB layouts.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators FAQ

How is the reset delay time adjusted?

The reset delay time can be adjusted by connecting an external capacitor to the designated pin.

What happens when the output voltage drops below 4.62V?

The internal reset circuit triggers, outputting a reset signal to indicate the undervoltage condition.