BA178M18CP-E2

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

The BA178M18CP-E2 is a fixed positive linear voltage regulator from the ROHM BA178M series, designed for through-hole mounting in a TO-220CP-3 package. It provides a fixed output voltage of 18 V with a maximum continuous output current of 500 mA. The device operates within an input voltage range of 21 V to 33 V and withstands a maximum voltage of 35 V. Line regulation is specified at 10 mV, and load regulation at 20 mV. It features thermal shutdown and overcurrent protection, with an operating temperature range from -40°C to +85°C.

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

• Integrated thermal shutdown circuit prevents damage during overheating conditions.
• Built-in overcurrent protection safeguards the device against short circuits or excessive loads.
• High ripple rejection characteristics ensure stable output voltage under varying input noise.

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

• General-purpose power supply circuits requiring regulated 18 V DC output
• Industrial control systems utilizing through-hole mounted regulators
• Embedded electronics needing reliable linear voltage regulation

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

Verify the specific suffix (e.g., -E2) matches the required RoHS compliance and lead-free specifications. Confirm the package type is TO-220CP-3 for through-hole assembly. Check manufacturer documentation for end-of-life status, as some listings indicate potential obsolescence. Ensure input voltage constraints are respected to maintain regulation accuracy.

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

Select this component when a fixed 18 V output is required with up to 500 mA load capacity. The TO-220CP-3 package suits applications where through-hole mounting is preferred or necessary for mechanical stability. Consider the thermal performance and heat dissipation requirements given the power dissipation capabilities. Verify that the input voltage remains within the 21 V to 33 V operational window for proper regulation.

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

This part belongs to the BA178M series of 500mA linear regulators by ROHM Semiconductor. It shares functional similarities with other variants in the series, differing primarily in output voltage and package style. The CP designation indicates the through-hole TO-220CP-3 package, distinct from surface-mount FP variants. It serves as a standard solution for fixed voltage regulation in general electronic equipment.

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

Direct substitutes include other BA178M18 variants with compatible packages, such as BA178M18FP if surface mount is acceptable. Cross-brand equivalents like LM7818CT may be considered but require verification of pinout and electrical parameter compatibility. Always confirm thermal and mechanical fit before substitution.