BA178M18FP-E2

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

The BA178M18FP-E2 is a surface-mount linear voltage regulator from the ROHM BA78M series, housed in a TO-252-3 package. It provides a fixed 18 V output with a maximum current of 500 mA. The device operates within an input voltage range of 21 V to 33 V and supports an operating temperature range from -40 °C to +85 °C. Key electrical characteristics include a line regulation of 10 mV, load regulation of 20 mV, and a typical power supply rejection ratio (PSRR) of 78 dB. The component integrates thermal shutdown and overcurrent protection circuits.

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

• Integrated overcurrent protection circuit for safeguarding against excessive load conditions
• Built-in thermal shutdown circuit to prevent damage during overheating events
• High ripple rejection capability ensuring stable output voltage under varying input noise

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

• General-purpose positive voltage regulation in electronic circuits
• Power management modules requiring fixed 18 V DC supply
• Industrial control systems operating within specified temperature ranges

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

Verify the specific suffix E2 for RoHS compliance and lead time requirements before ordering. Confirm that the TO-252-3 package dimensions match the target PCB footprint. Check for any recent discontinuation notices or end-of-life notifications from the manufacturer, as availability may be limited for legacy components.

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

Select this component when a fixed 18 V output at 500 mA is required in a surface-mount form factor. Ensure the input voltage remains between 21 V and 33 V to maintain proper regulation. Consider the thermal dissipation capabilities of the TO-252-3 package relative to the expected power loss in the application environment.

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

This part belongs to the BA78M series of linear regulators by ROHM Semiconductor. It serves as a surface-mount alternative to through-hole variants like the BA178M18CP. The series is designed for general-purpose applications requiring reliable voltage regulation with built-in safety features such as thermal and current protection.

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

Direct pin-compatible replacements within the same series include BA78M18FP. For updated alternatives, verify if newer ROHM LDO regulators offer similar specifications with improved efficiency or packaging options.