L78M12ACDT-TR

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PMIC - Voltage Regulators - Linear

The L78M12ACDT-TR is a type of linear voltage regulator that is used to provide regulated DC output voltages from inputs of higher voltage. This 3-terminal regulator comes in several packages and provides a stable output voltage of 12V, making it suitable for use in industrial, automotive, consumer and communications applications. It is capable of providing a maximum output current of 1.5A with maximum power dissipation of 8W.

Features

• Wide input voltage range: 2.5V to 40V
• High efficiency and reliability
• Short-circuit and over-temperature protection
• Low dropout voltage
• Requires only two external components
• High PSRR
• Low noise operation

Working Principle

The L78M12ACDT-TR linear regulator works through a process known as "linear regulation", which basically involves the controlled dissipation of energy to maintain the output voltage at a constant level. It uses an internal voltage reference, which is compared to the output voltage, and then adjusts the input current by driving an specific amount of current into the output. This process maintains the output voltage at a fixed level, even when the input voltage changes.

The regulator is equipped with a low-dropout (LDO) feature, which helps reduce the amount of power that must be dissipated to maintain the same output voltage. It also has a built-in thermal protection that will shut down the device when the device power dissipation reaches a level that could challenge its thermal stability.

Application Field

The L78M12ACDT-TR linear voltage regulator is ideal for use in a wide range of applications, such as LED driver circuits, power supplies, battery chargers and other portable applications. Its low dropout voltage, high efficiency and wide input voltage range make it suitable for a variety of applications.

Moreover, it has an excellent power supply rejection ratio (PSRR), which helps to maintain the stability of the output voltage even when the input voltage fluctuates. As such, it can be used in communications and automotive applications, as well as industrial and consumer applications.

Conclusion

The L78M12ACDT-TR linear voltage regulator is a versatile, high-performance device that can be used in a wide range of applications. It offers a wide input voltage range, high efficiency, low dropout voltage and high PSRR. Additionally, it is equipped with thermal protection and requires only two external components, making it an ideal choice for a variety of applications.

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