BA17812T

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

The BA17812T is a fixed positive linear voltage regulator from the ROHM BA178xx series, providing a nominal output of 12 V with a maximum continuous output current of 1 A. It utilizes a TO-220FP through-hole package and operates within an ambient temperature range of -40 °C to +85 °C. The device accepts input voltages between 15 V and 27 V, featuring line regulation and load regulation both specified at 240 mV. Rated for 2 W power dissipation, it incorporates internal thermal shutdown and overcurrent protection circuits.

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

• Integrated thermal shutdown circuitry prevents damage during excessive heat generation.
• Built-in overcurrent protection limits output current to safe levels under fault conditions.
• High ripple rejection capability ensures stable DC output despite input noise.

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

• General-purpose power supply regulation
• Embedded system biasing
• Industrial control equipment

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

Verify the specific suffix 'T' against the manufacturer's official datasheet to confirm the TO-220FP package configuration. Ensure the component meets RoHS3 compliance requirements if applicable to your design. Cross-reference the part number with authorized distributors to confirm current availability status, as older series components may have limited stock or end-of-life implications.

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

Select this component when a robust, high-current (1 A) linear solution is required for 12 V applications. The TO-220FP package facilitates effective heat dissipation for moderate power loads. Consider the minimum input voltage requirement of 15 V to ensure sufficient dropout voltage margin. Verify that the operating environment stays within the specified -40 °C to +85 °C range for reliable performance.

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

This regulator belongs to the BA178xx family, which serves as a modern replacement for traditional 78xx series regulators. The BA178xx series offers improved electrical characteristics and reliability compared to legacy equivalents. The BA17812T specifically provides the 12 V output variant in a through-hole format suitable for general industrial and commercial electronics designs requiring standard linear regulation.

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

BA17812CP-E2: Alternative TO-220CP-3 package version.

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

What is the typical quiescent current for the BA17812T?

The typical circuit current (Iq) is approximately 4.5 mA.

Does the BA17812T include short-circuit protection?

Yes, the device includes built-in overcurrent protection to safeguard against short circuits and overload conditions.