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BD18HA3MEFJ-LBH2 is listed in the Voltage Regulators - Linear, Low Drop Out (LDO) Regulators range at ChipApex. The manufacturer field lists Rohm Semiconductor. Its product description is IC REG LIN 1.8V 300MA 8-HTSOP-J. Review the specifications below when checking this part for your BOM.
The BD18HA3MEFJ-LBH2 is a fixed-output low-dropout (LDO) voltage regulator manufactured by ROHM Semiconductor. It provides a stable 1.8 V output with a maximum continuous current of 300 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 at full load. Designed for industrial applications, it supports surface-mount installation in an HTSOP-J8 package. The component functions reliably across an extended temperature range from -40°C to +105°C, ensuring consistent performance in demanding environments.
Verify the specific suffix LBH2 against official ROHM documentation to confirm packaging configuration and tape-and-reel specifications. Ensure that the selected variant matches the required HTSOP-J8 footprint and pinout for PCB layout compatibility. Cross-reference the datasheet revision history to validate electrical characteristics against current production standards before finalizing procurement orders.
Select this regulator when a fixed 1.8 V output is required with moderate current demands up to 300 mA. Consider the 4.5 V minimum input voltage constraint to ensure adequate headroom for the specified dropout voltage. Evaluate the thermal dissipation capabilities within the HTSOP-J8 package relative to the expected ambient temperature and load profile to maintain junction temperatures within safe operating limits.
This component belongs to the BD18HA series of LDO regulators designed for industrial-grade reliability. It complements other variants in the family offering different output voltages or current capacities. The series emphasizes stability and protection features essential for critical infrastructure and automotive electronics where consistent power management is vital for system integrity and longevity.
Public confirmed substitute part numbers are not available in the provided source material.
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