BA178M18T

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

The BA178M18T is a fixed linear voltage regulator from the ROHM BA178M series, providing a nominal output of 18 V with a maximum continuous output current of 500 mA. It utilizes a surface-mount TO-252-3 (DPAK-3) package for compact integration. The device operates within an input voltage range of 21 V to 33 V and maintains a stable output across an ambient temperature range of -40 °C to +85 °C. Internal circuitry includes thermal shutdown and overcurrent protection mechanisms to ensure operational reliability under fault conditions.

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

• Integrated thermal shutdown and overcurrent protection circuits for enhanced safety
• High ripple rejection characteristics for clean power delivery
• Surface-mount TO-252-3 package design for space-constrained applications

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

• General-purpose linear power supply regulation
• Embedded system voltage conditioning
• Industrial control unit power management

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

Verify the specific suffix 'T' against official datasheets to confirm the exact tape-and-reel packaging configuration and quantity. Ensure the component status is active, as some variants in this family may be obsolete. Cross-reference the manufacturer part number directly with ROHM documentation to avoid substitution errors with similar packages.

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. The TO-252-3 package offers a balance between thermal performance and board space efficiency compared to through-hole alternatives. Verify that the input voltage headroom meets the minimum dropout requirements for the specific application load.

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

This regulator belongs to the BA178M series, which serves as the surface-mount equivalent to the traditional through-hole 78xx series regulators. The series provides fixed output voltages with integrated protection features, designed to simplify power supply design in modern electronic equipment requiring reliable linear regulation.

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

BA178M18FP-E2: Surface-mount variant with identical electrical specifications but different pinout or thermal characteristics; verify compatibility before substitution.