BD450S5WEFJ-CE2

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

The BD450S5WEFJ-CE2 is a fixed-output low dropout (LDO) regulator manufactured by ROHM Semiconductor, designed for automotive applications. It provides a fixed 5 V output with a maximum continuous current of 500 mA. The device features a typical quiescent current of 38 uA and an absolute maximum input voltage rating of 45 V. Key electrical parameters include a typical ripple rejection ratio of 60 dB and a typical dropout voltage of 200 mV at 300 mA load. Output voltage accuracy is specified at ±2% for the 5.0 V variant. 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

• Includes an enable input function allowing control of the output state via logic levels on the CTL pin.
• Integrates overcurrent protection circuits to prevent damage during output short-circuit conditions.
• Features thermal shutdown protection to safeguard the IC against overheating under overload scenarios.

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

• Battery-connected systems requiring low quiescent current consumption
• Automotive electronic modules supporting functional safety analysis
• Fixed voltage regulation for 5 V logic or peripheral supplies

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

Verify the specific suffix CE2 corresponds to the required tape-and-reel packaging configuration. Confirm that the HTSOP-J8 package dimensions align with the target PCB footprint. Ensure design compatibility with the specified 6 µF minimum output capacitor requirement for stability. Check for RoHS compliance documentation if required by assembly specifications.

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

Select this component when a 5 V fixed output is required with high input voltage tolerance up to 45 V. Consider the 500 mA current capability for moderate load applications. Evaluate the 38 uA quiescent current for battery efficiency requirements. Verify that the HTSOP-J8 package is suitable for the available board space and thermal management strategy.

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

This part belongs to the BD450S series of automotive LDO regulators from ROHM. It shares characteristics with other variants in the family, such as different output voltages or packages, but is distinct in its specific 5 V output and HTSOP-J8 form factor. The series is characterized by low static current and robust protection features suitable for harsh automotive environments.

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

The BD450S5WFP-CE2 serves as a substitute option offering identical electrical performance but housed in a TO-252-5 package instead of HTSOP-J8. Designers must account for the physical footprint difference and potential thermal dissipation variations between these two package types.