BD18HC5JEFJ-E2

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

The BD18HC5JEFJ-E2 is a positive single-output Low Dropout (LDO) voltage regulator manufactured by ROHM Semiconductor. It provides a fixed 1.8V output with a maximum load current of 1.5A. The device operates within an input voltage range of 4.5V to 8V and supports an adjustable output type variant in the broader series, though this specific part is fixed. Key electrical parameters include a typical dropout voltage of 600mV at full load, line regulation of 1%, and load regulation of 1.5%. It features a shutdown function reducing standby current to 0µA, thermal shutdown protection, and overcurrent protection. The component is housed in an HTSOP-J8 surface-mount package and is rated for operation between -25°C and +85°C.

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

• Integrated high-current capability delivering up to 1.5A output with low dropout characteristics for efficient power management.
• Built-in comprehensive protection mechanisms including thermal shutdown, overcurrent protection, and a zero-current shutdown switch.
• Compatible with ceramic output capacitors to support compact design and enhanced long-term reliability.

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

• Digital home appliances
• General-purpose power supply circuits
• Battery-powered devices requiring stable voltage regulation

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

Verify the exact suffix and marking on the component to confirm it matches the BD18HC5JEFJ-E2 designation, as variations exist within the BD18HC5 family. Ensure the application circuit utilizes ceramic capacitors as specified for stability. Confirm that the operating environment remains within the -25°C to +85°C temperature range. Check for any specific handling requirements associated with the HTSOP-J8 package during assembly.

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

Select this component when a fixed 1.8V output is required with high current drive capabilities up to 1.5A. It is suitable for designs prioritizing thermal performance and protection features in a compact SMD package. Consider the input voltage range limits and ensure the dropout voltage specifications meet the system's headroom requirements under maximum load conditions.

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

This LDO regulator belongs to the BD18HC5 series from ROHM Semiconductor, designed for digital appliance applications. The series emphasizes production efficiency and thermal performance through its HTSOP-J8 packaging. While electrically similar to other variants in the family, this specific part number denotes a fixed 1.8V output configuration with standard industrial temperature ratings.

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

The BD18HC5WEFJ is noted as having identical electrical characteristics but uses a different production line. Designers may consider this alternative if available, ensuring the package and pinout remain compatible. Verify that any substitute maintains the same fixed output voltage and current rating.