BD433S5WFP-CE2

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

The BD433S5WFP-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 current capacity of 500mA. The device operates within an input voltage range of 4V to 42V and features a typical quiescent current of 38uA. Key electrical parameters include a typical ripple rejection of 60dB, a typical dropout voltage of 250mV, and a maximum dropout voltage of 750mV. Line and load regulation are specified at 10mV. It is housed in a TO-252-5 package and supports an operating temperature range from -40°C to +150°C.

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

• Includes an enable input function for power management control
• Designed for automotive use with high thermal stability up to 150°C
• Features low quiescent current consumption for energy efficiency

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

• Automotive electronic systems requiring stable 3.3V supply
• Battery-powered automotive modules with direct battery connection
• Power distribution units in vehicle infotainment or instrument clusters

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

Verify the complete part number including the suffix CE2 to ensure correct packaging and automotive qualification status. Confirm RoHS compliance details through the official datasheet before procurement. Check for any specific handling requirements related to the SMD/SMT installation style and moisture sensitivity level indicated in the component specifications.

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

Select this component when a fixed 3.3V output is required with up to 500mA load capability in automotive environments. Ensure the input voltage remains between 4V and 42V. Consider the TO-252-5 package size for PCB layout constraints. Verify that the 38uA quiescent current meets system standby power requirements and that the 60dB ripple rejection is sufficient for noise-sensitive loads.

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

This LDO regulator belongs to ROHM's automotive-grade power management portfolio, specifically engineered for reliability in harsh vehicular conditions. It complements other fixed-output variants in the series, offering a balance of high current drive and low static power consumption. The device integrates protection features suitable for automotive power trees, supporting functional safety analysis as an FS supportive product.

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

Check for pin-compatible alternatives within the same BD4xxS5 series if different output voltages or packages are needed. Verify that substitute parts maintain the same 500mA output current and 3.3V fixed output specification. Ensure replacement components also meet automotive temperature ranges and RoHS standards.