BD18HA3WEFJ-E2

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

The BD18HA3WEFJ-E2 is a fixed-output low-dropout (LDO) voltage regulator manufactured by ROHM Semiconductor. It provides a stable positive output of 1.8 V with a maximum load current capability of 300 mA. The device operates within an input voltage range of 4.5 V to 8 V and maintains performance across a junction temperature range of -25°C to +85°C. Key electrical specifications include a typical dropout voltage of 600 mV, line regulation of 1%, and load regulation of 1.5%. The unit is housed in an HTSOP-J8 surface-mount package.

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

• Provides a fixed 1.8 V positive output for precise power supply requirements
• Capable of delivering up to 300 mA continuous load current
• Operates efficiently with a low dropout voltage under load conditions
• Designed for surface-mount installation in compact electronic assemblies

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

• Portable battery-powered consumer electronics requiring stable 1.8 V rails
• Embedded systems utilizing microcontrollers or memory components operating at 1.8 V
• Industrial control modules needing regulated power within the specified temperature range

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

Verify the complete part number including the suffix to ensure correct output voltage and package configuration. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Cross-reference the datasheet for thermal management requirements specific to the HTSOP-J8 package in your final design implementation.

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

Select this component when a fixed 1.8 V output is required with moderate current demands up to 300 mA. Ensure the system input voltage remains between 4.5 V and 8 V to maintain proper regulation. Consider the thermal dissipation capabilities if operating near maximum load currents or elevated ambient temperatures within the specified range.

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

This regulator belongs to the BD18HA3WEFJ series from ROHM Semiconductor, categorized under PMIC voltage regulators. It shares the HTSOP-J8 package form factor with other variants in the family, such as the BD25HA3WEFJ-E2 and BD33HA3WEFJ-E2, which offer different fixed output voltages while maintaining similar current and regulatory characteristics.

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

The part number alias BD18HA3WEFJ refers to the same functional device. Verify pin compatibility and thermal performance when substituting with other 1.8 V LDOs from different manufacturers.