BA178M05FP-E2

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

The BA178M05FP-E2 is a surface-mount linear voltage regulator from the ROHM BA178M series, designed for fixed positive output applications. It delivers a maximum output current of 0.5 A with a nominal output voltage of 5 V and an accuracy of ±4.0%. The device operates within an input voltage range of 7.5 V to 25 V and supports a maximum withstand voltage of 35 V. Quiescent circuit current is specified at 4.5 mA. Thermal protection includes over-current protection and thermal shutdown functions, while it lacks soft-start or discharge capabilities. The component is housed in a TO-252-3 package and functions reliably across an operating temperature range of -40°C to +85°C.

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

• Integrated over-current protection and thermal shutdown circuits ensure operational safety under fault conditions.
• Fixed positive output configuration provides stable voltage regulation without external adjustment components.
• Surface-mount TO-252-3 packaging facilitates automated assembly and compact board design.

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

• General-purpose power supply circuits requiring regulated 5V rails
• Embedded systems and microcontroller power conditioning
• Industrial control equipment power management

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

Verify the specific suffix E2 against official ROHM documentation to confirm compliance with environmental standards such as RoHS. Confirm that the TO-252-3 package variant matches the intended PCB footprint and thermal requirements. Check manufacturer status updates as some variants may be subject to end-of-life notices or production discontinuation. Ensure input voltage constraints are strictly observed to prevent device damage.

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

Select this regulator when a fixed 5V output with 500mA capacity is required in a surface-mount form factor. Consider the thermal performance limits and the absence of soft-start features if inrush current management is critical. Compare line and load regulation specifications against system tolerance requirements. Evaluate the need for additional heat sinking based on the expected power dissipation in the application environment.

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

This component belongs to the BA178M series of linear regulators, which are part of the broader 78-series family architecture adapted for surface-mount technology. The series offers various fixed voltage outputs ranging from low voltages to higher levels, all sharing similar protective features like thermal shutdown and over-current protection. The TO-252-3 package is commonly used in space-constrained designs where through-hole alternatives like TO-220 are not feasible.

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

Direct pin-compatible replacements within the same series include other BA178MxxFP-E2 variants with different fixed output voltages. Cross-brand equivalents should be verified for matching pinout, thermal characteristics, and electrical parameters. Ensure any substitute maintains the same package type and protection features to avoid redesigning the PCB layout or protection circuitry.