BD433S2FP3-CE2

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

The BD433S2FP3-CE2 is an automotive-grade low dropout (LDO) regulator from the BD4xxS2-C series, manufactured by ROHM Semiconductor. It provides a fixed 3.3V output with ±2.0% accuracy and supports a maximum output current of 200mA. The device features a low quiescent current of 40µA (typical) and withstands input voltages up to 45V. Key electrical parameters include a typical dropout voltage of 200mV at 100mA, ripple rejection of 65dB, and load regulation of 10mV. It operates within a junction temperature range of -40°C to +150°C and includes overcurrent and thermal shutdown protection.

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

• Enables or disables output via a control pin for power management
• Supports ceramic capacitors for output phase compensation
• Integrates overcurrent protection against output short circuits
• Includes thermal shutdown circuitry to prevent heat damage

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

• Battery-connected systems in automotive environments
• Power supply units requiring low static current consumption
• Automotive electronic modules needing stable 3.3V regulation

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

Verify the specific suffix CE2 to confirm package type and RoHS compliance. Confirm AEC-Q100 qualification status for automotive reliability requirements. Check functional safety classification as FS supportive for system-level safety analysis integration. Ensure compatibility with SOT-223-4 surface mount assembly processes.

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

Select this component for applications requiring high voltage tolerance up to 45V with low standby current. Consider the BD433S2WFP3-C variant if production line changes are acceptable, as specifications remain identical. Evaluate the need for shutdown functionality when designing power sequences. Verify that ceramic output capacitors meet stability requirements for the LDO loop.

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

This part belongs to the BD4xxS2-C series of low quiescent current regulators designed for automotive use. It serves as a successor or alternative to the BD433M2WFP3-C model, resulting from a manufacturing line change without altering technical specifications. The series is optimized for direct battery connection scenarios where minimizing current drain is critical.

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

BD433S2WFP3-C is documented as having no differences in guaranteed characteristics and design models.