BD18HA5WEFJ-E2

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

The BD18HA5WEFJ-E2 is a fixed-output low-dropout regulator manufactured by ROHM Semiconductor, designed for automotive applications. It provides a positive output voltage of 1.8 V with a maximum output current of 500 mA. The device operates within an input voltage range of 4.5 V to 8 V and features a typical dropout voltage of 600 mV, with a maximum of 900 mV. Line regulation is specified at 1%, and load regulation at 1.5%. The unit functions in an ambient temperature range from -25°C to +85°C and is housed in an HTSOP-J8 surface-mount package.

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

• Automotive-grade LDO regulator with high-accuracy fixed output
• Low dropout voltage capability for efficient power management
• Compact HTSOP-J8 surface-mount package design

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

• Automotive electronic systems requiring stable 1.8V supply
• On-board computer power distribution networks
• Infotainment system component regulation

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

Verify the specific suffix 'E2' against official ROHM documentation to confirm compliance with required automotive standards and RoHS directives. Ensure the HTSOP-J8 package variant matches the intended PCB footprint and thermal requirements. Confirm that the 1.8V fixed output aligns precisely with the target circuit design before finalizing procurement orders.

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

Select this component when a reliable 1.8V source is needed for automotive loads drawing up to 500 mA. The fixed output eliminates external resistor networks, simplifying the design. Consider the 600 mV typical dropout for input voltage headroom calculations. Verify that the -25°C to +85°C operating range meets the environmental conditions of the specific application zone.

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

This part belongs to the BD18HA5WEFJ series of automotive LDO regulators. It shares the HTSOP-J8 package form factor with other variants in the family but differs in output voltage settings. The series is engineered to meet automotive reliability standards while providing stable voltage regulation for sensitive digital logic and peripheral components.

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

Consult official ROHM cross-reference lists for direct substitutes. Variants such as BD18HA5VEFJ-ME2 offer similar electrical characteristics but may differ in extended temperature ranges or specific automotive qualification levels. Always verify pin compatibility and thermal performance before substituting.