BD450S2FP3-CE2

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

The BD450S2FP3-CE2 is a fixed-output Low Dropout (LDO) regulator from ROHM Semiconductor, designed for automotive applications. It provides a 5.0V output with a maximum current of 200mA. The device features a high withstand voltage of up to 45V and an input voltage range of 5.8V to 42V. Key electrical parameters include a typical quiescent current of 40uA, a ripple rejection ratio of 65dB, and a typical dropout voltage of 160mV at 100mA load. It offers ±2% output voltage accuracy and operates within a temperature range of -40°C to +150°C.

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

• Features low quiescent current consumption for efficient power management in battery-connected systems.
• Includes built-in overcurrent protection and thermal shutdown circuits to prevent IC damage under fault conditions.
• Supports ceramic output capacitors, simplifying design and reducing component count.
• Automotive-grade reliability with AEC-Q100 qualification for harsh environment operation.

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

• Automotive battery direct connection systems requiring low standby current
• Fixed voltage regulation for automotive electronic control units
• Power supply stages in vehicle infotainment and instrumentation systems

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

Verify the specific suffix CE2 ensures compliance with RoHS directives and automotive quality standards. Confirm package integrity for SOT-223-4 mounting. Check for obsolescence status as some variants may be non-recommended for new designs. Ensure supplier documentation matches the exact part number to avoid pinout mismatches.

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

Select this model when a 5.0V fixed output is required with 200mA capability. Consider the 45V absolute maximum rating for high-voltage automotive environments. Compare dropout voltage specifications against minimum input voltage constraints. Evaluate thermal performance based on expected load currents and ambient temperatures.

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

This component belongs to the BD4xxS2-C series of LDO regulators. It shares architectural similarities with other members like BD450M2FP3-CE2 but differs in package type and specific electrical characteristics. The series is targeted at automotive applications requiring robust voltage regulation and low power consumption.

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

Direct substitutes within the same family include BD450M2FP3-CE2, though package differences exist. Cross-reference with BD433S2FP3-CE2 if a 3.3V output is acceptable. Verify pin compatibility and thermal dissipation requirements before swapping.