BD18IA5JEFJ-E2

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

The BD18IA5JEFJ-E2 is a low-dropout regulator manufactured by ROHM Semiconductor, designed for stable power supply applications. It features a fixed 1.8V output voltage and supports a maximum output current of 0.5A. The device operates within an input voltage range of 2.4V to 5.5V. Key electrical parameters include a typical dropout voltage of 400mV at full load, with a maximum of 600mV. Quiescent current is specified at 5uA. Line regulation is rated at 1%, while load regulation stands at 1.5%. The unit is housed in an HTSOP-J8 surface-mount package and functions reliably across a temperature range of -25°C to +85°C.

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

• Provides a fixed 1.8V output with high accuracy for local power supplies
• Integrates overcurrent protection and thermal shutdown circuits to prevent damage
• Includes an on/off switch that reduces circuit current to zero during shutdown

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

• Digital home appliances requiring stable low-voltage power rails
• Portable electronic devices needing compact power management solutions
• General-purpose integrated circuits requiring localized voltage regulation

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

Verify the specific suffix E2 against the manufacturer's latest datasheet to confirm pinout compatibility and electrical specifications. Ensure the ordering code matches the required HTSOP-J8 package variant. Cross-reference the RoHS compliance status with current environmental regulations before finalizing procurement orders. Confirm availability through authorized distributors to avoid counterfeit components.

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

Select this component when a fixed 1.8V rail is required with moderate current demands up to 500mA. The low quiescent current makes it suitable for battery-powered systems where efficiency is critical. Consider the HTSOP-J8 package for space-constrained designs. Evaluate the dropout voltage characteristics against the minimum input voltage available in the target application to ensure proper regulation under all load conditions.

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

This part belongs to ROHM's series of secondary LDO regulators designed for small size and energy saving. The BD18IA5JEFJ-E2 specifically offers a fixed output configuration, distinguishing it from adjustable variants within the same family. It is engineered for digital equipment applications, providing reliable performance with built-in safety features like thermal and overcurrent protection.

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

BD18IA5WEFJ-E2: Similar fixed 1.8V output but different package (HTSOP-J8 vs HTSOP-J8) and potentially different thermal characteristics. Verify pin compatibility and thermal dissipation requirements before substitution.