MC7812AECTBU

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

The MC7812AECTBU is a three-terminal positive linear voltage regulator from the MC78XXE series, manufactured by onsemi. It provides a fixed 12V output with a maximum current capability of 1A. The device operates within an input voltage range of 14.5V to 30V and supports junction temperatures from 0°C to +125°C. Key electrical characteristics include a typical ripple rejection of 60dB at 120Hz, a dropout voltage of 2.0V at 1A load, and a quiescent current of approximately 6.0mA. It utilizes a TO-220 package.

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

• Integrated thermal overload protection prevents damage during excessive heat conditions.
• Built-in short circuit protection safeguards the device against output faults.
• Output transistor safe operating area protection ensures reliability under varying load conditions.

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

• General-purpose DC power supply regulation
• Local card-level voltage regulation for electronic circuits
• Constant current regulation applications

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

Verify the specific ordering suffix 'BU' against official manufacturer documentation, as datasheets primarily list standard suffixes like 'ECT'. Confirm RoHS compliance status and ensure the component matches the specified TO-220 package dimensions. Cross-reference the part number with authorized distributors to confirm availability and authenticity before procurement.

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

Select this regulator when a stable 12V fixed output is required for loads up to 1A. Ensure the input voltage remains sufficiently above the output voltage to maintain regulation, accounting for the specified dropout voltage. Consider the thermal resistance characteristics and provide adequate heat sinking if the power dissipation exceeds the limits defined for the TO-220 package in ambient conditions.

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

This component belongs to the MC78XXE/LM78XXE/MC78XXAE family of three-terminal positive regulators. These devices are designed for a wide range of applications requiring fixed output voltages. The series includes various voltage options and tolerance levels, with the 'A' variant typically indicating tighter output voltage tolerances compared to the standard 'E' version.

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

MC7812ECT

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

What is the maximum input voltage for the MC7812AECTBU?

The absolute maximum input voltage rating is 35V.

Does the MC7812AECTBU include internal protection features?

Yes, it includes thermal overload protection, short circuit protection, and output transistor safe operating area protection.