BD433S2WEFJ-CE2

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

The BD433S2WEFJ-CE2 is a fixed-output low dropout regulator from the BD4xxS2-C series, manufactured by ROHM Semiconductor. It provides a stable 3.3V output with a maximum current of 200mA and features an enable input for power control. The device operates within an input voltage range of 4.3V to 42V, utilizing an HTSOP-J8 package. Key electrical specifications include a typical quiescent current of 40µA, output voltage accuracy of ±2%, and a ripple rejection ratio of 65dB. It supports operation temperatures from -40°C to +150°C.

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

• Features an enable input function that allows the output to be turned on or off via the CTL pin voltage level.
• Incorporates built-in overcurrent protection circuits to prevent damage during output short circuits.
• Includes thermal shutdown protection mechanisms to safeguard against heat damage under overload conditions.
• Designed for automotive applications with high withstand voltage capabilities up to 45V absolute maximum.

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

• Battery-connected systems requiring reduced standby current consumption
• Automotive electronic modules needing reliable voltage regulation
• Circuits requiring controlled power sequencing via enable inputs

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

Verify the specific suffix CE2 corresponds to the required packaging and quality standards. Confirm HTSOP-J8 package compatibility with your PCB footprint. Ensure the 3.3V fixed output meets system requirements. Check RoHS compliance documentation if environmental regulations apply. Validate that the 200mA output current suffices for the load.

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

Select this component when a 3.3V fixed output is required with low quiescent current characteristics. The HTSOP-J8 package suits space-constrained surface-mount designs. Consider the 42V input range for direct battery connections in automotive environments. The enable feature is critical for power management strategies requiring external control of the regulator state.

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

This part belongs to the BD4xxS2-C series of low quiescent current regulators. The series offers fixed outputs of 3.3V or 5.0V with ±2% accuracy. These devices are designed to replace older models like the BD433M2WFP3-C while maintaining similar technical specifications and design models for easier integration into existing automotive power architectures.

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

The BD433S2WEFJ-CE2 is noted as a production line change from the BD433M2WFP3-C model. Technical specifications and design models remain substantially identical. Verify pinout compatibility before substitution to ensure seamless integration without circuit redesign.

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

What is the purpose of the CTL pin on the BD433S2WEFJ-CE2?

The CTL pin serves as the enable input. Applying a high voltage turns the output on, while a low voltage turns it off, allowing for external power control.

Does the BD433S2WEFJ-CE2 include protection circuits?

Yes, it includes built-in overcurrent protection to prevent damage from short circuits and thermal shutdown protection to prevent heat damage during overload.