BD450S5EFJ-CE2

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

The BD450S5EFJ-CE2 is a fixed-output low dropout regulator from ROHM Semiconductor, designed for automotive applications. It provides a 5V output with a maximum current of 500mA and features a typical quiescent current of 38µA. The device supports an input voltage range from 5.5V to 42V, with a maximum withstand voltage of 45V. Key electrical parameters include a typical ripple rejection of 60dB, a line regulation of 10mV, and a load regulation of 10mV. The dropout voltage is typically 200mV at 300mA, with a maximum of 500mV. It operates within a junction temperature range of -40°C to +150°C and is housed in an HTSOP-J8 package.

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

• High voltage tolerance up to 45V absolute maximum rating suitable for direct battery connection systems.
• Low quiescent current consumption of 38µA typ to minimize power loss in standby modes.
• Integrated protection circuits including over-current protection and thermal shutdown for enhanced reliability.

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

• Automotive electronic control units requiring stable 5V supply.
• Battery-connected systems needing high-voltage input regulation.
• Infotainment and instrument cluster power distribution networks.

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

Verify the specific suffix CE2 matches the required packaging and tape-and-reel specifications. Confirm RoHS compliance status through official documentation before integration. Check functional safety classification if used in safety-critical automotive designs. Ensure the fixed 5V output variant aligns with system voltage requirements. Validate operating temperature ranges against environmental conditions.

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

Select this component when a fixed 5V output is required with high input voltage capability up to 42V. Consider the 500mA output current limit for load demands. Evaluate the 38µA quiescent current for efficiency needs. Compare dropout voltage characteristics against available headroom. Verify package compatibility with HTSOP-J8 footprint constraints.

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

This part belongs to the BD450S5-C series of automotive LDO regulators. It shares family characteristics such as high voltage tolerance and low static current with other variants like BD433S5EFJ-CE2 (3.3V) and BD450S5WEFJ-C (with shutdown). The series targets robust performance in harsh automotive environments.

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

BD450S5WEFJ-C offers similar electrical performance but includes a shutdown function. BD433S5EFJ-CE2 provides a 3.3V fixed output instead of 5V. Both are in the same automotive-grade family. Verify pinout and thermal characteristics before substitution.