BD733L2FP-CE2

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

The BD733L2FP-CE2 is a fixed-output low dropout regulator from ROHM Semiconductor, housed in a TO-252-3 surface-mount package. It provides a stable 3.3 V output with a maximum continuous current of 200 mA. The device operates within an input voltage range of 4.37 V to 45 V and supports a maximum withstand voltage of 50 V. Key electrical specifications include a typical quiescent current of 6 µA, a typical dropout voltage of 600 mV at full load, and a ripple rejection ratio of 63 dB. It features ±2.0% output voltage accuracy and is qualified under AEC-Q100 standards for automotive applications.

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

• Ultra-low standby current consumption of 6 µA minimizes power drain in battery-connected systems.
• Integrated overcurrent protection and thermal shutdown circuits prevent damage during short circuits or overload conditions.
• Compatible with ceramic output capacitors, simplifying phase compensation and reducing component count.
• Automotive-grade reliability ensured by AEC-Q100 qualification for harsh operating environments.

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

• Power supply stages in automotive electronic control units requiring direct battery connection.
• Battery-operated devices where minimizing standby current is critical for extended runtime.
• General-purpose linear regulation in industrial equipment needing robust overcurrent protection.

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

Verify the specific suffix CE2 matches the required TO-252-3 packaging configuration. Confirm that the fixed 3.3 V output aligns with system requirements, as other voltages may require different part numbers within the BD733L2EFJ/FP-C series. Ensure compatibility with ceramic output capacitors as specified in the official datasheet to maintain stability. Check for any recent revisions to the AEC-Q100 qualification status if deploying in safety-critical automotive applications.

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

Select this component when a fixed 3.3 V rail is needed with minimal quiescent current draw. The 200 mA output capability suits moderate load applications, while the 50 V withstand voltage allows direct connection to higher voltage sources like vehicle batteries. Consider the TO-252-3 package for its thermal performance and space efficiency compared to smaller packages. Verify that the 600 mV typical dropout voltage meets the headroom requirements of the input supply under all operating conditions.

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

This regulator belongs to the BD7xxL2EFJ/FP-C series, designed specifically for automotive use with high withstand voltage capabilities. The series emphasizes low current consumption and robust protection features, making it suitable for modern vehicle electronics that demand high reliability and efficiency. The BD733L2FP-CE2 variant specifically targets applications requiring a fixed 3.3 V output in a compact surface-mount form factor.

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

Check for BD733L2EFJ-CE2 if an HTSOP-8 package is preferred instead of TO-252-3. Verify functional equivalence regarding pinout and electrical parameters before substitution. No other direct cross-references are confirmed in the provided documentation.