BD433U2WEFJ-CE2

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

The BD433U2WEFJ-CE2 is a fixed output Low Dropout (LDO) voltage regulator manufactured by ROHM Semiconductor, designed for automotive applications. It provides a stable 3.3V output with a maximum continuous current of 200mA. The device features a low quiescent current of 40uA and supports an input voltage range from 4.3V to 42V, with an absolute maximum rating of 45V. Key electrical specifications include a typical dropout voltage of 200mV, line regulation of 10mV, load regulation of 10mV, and a Power Supply Rejection Ratio (PSRR) of 65dB. The unit operates within a junction temperature range of -40°C to +150°C and utilizes an HTSOP-J8 surface-mount package.

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

• Automotive-grade reliability with AEC-Q100 qualification
• Low quiescent current design for battery efficiency
• Integrated overcurrent and thermal shutdown protection

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

• Battery-connected systems requiring low standby power
• Automotive electronic control units (ECUs)
• Sensor power supply modules in vehicles

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

Verify the specific suffix 'U2' against official ROHM documentation to confirm package type and pinout compatibility, as variations exist within the BD4xxS2-C series. Ensure the application environment meets the specified operating temperature range and input voltage limits. Cross-reference the datasheet revision date to confirm the validity of electrical parameters before finalizing procurement orders.

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

Select this component when a fixed 3.3V output is required for automotive circuits with high input voltage tolerance up to 42V. The HTSOP-J8 package is suitable for space-constrained designs. Consider the 200mA current limit and 40uA quiescent current for power budgeting. Verify that the system does not require adjustable output or higher current capabilities than provided by this specific LDO variant.

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

This part belongs to the BD4xxS2-C series of low quiescent current regulators developed for automotive use. The series offers fixed output voltages of 3.3V or 5.0V with high accuracy. The BD433U2WEFJ-CE2 specifically denotes the 3.3V variant in the HTSOP-J8 package, providing robust performance under varying automotive electrical conditions while maintaining low power consumption.

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

The BD433S2WEFJ-CE2 is a confirmed substitute within the same family, offering identical electrical characteristics and functionality. Both parts share the same pinout and package type, allowing for direct replacement in existing designs without circuit modification.