L78L15ACUTR

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Introduction

The L78L15ACUTR voltage regulator is a linear voltage regulator that is commonly used in modern electronic designs. This device is made by STMicroelectronics, a leading electronics manufacturer that specializes in providing design solutions and integrated circuits for a variety of applications. This voltage regulator is a three-terminal low-dropout (LDO) fixed voltage regulator that is designed to provide a maximum of 15V output with a minimum input voltage of 10V. It is a low-power device and can provide current up to 100mA, which makes it ideal for a variety of applications.

Application Field

The L78L15AACUTR is used in a variety of applications. It is commonly used for post-regulation, over-voltage and power-failure protection, as well as in battery and supervisory circuits. It is a versatile device and is typically used in applications such as automotive electronics, consumer electronics, telecommunications, industrial control, instrumentation and military systems.

It is also commonly used in applications that demand reliable operation in harsh environments. It can handle temperatures between -40°C and +125°C, and can also withstand high-humidity and vibration. This makes it ideal for use in rugged environments and applications where space is limited. The device can also be used in line-powered applications including chargers, DC/DC converters, regulated power supplies and regulated constant current sources.

Working Principle

The L78L15ACUTR is a three-terminal voltage regulator with a fixed output voltage of 15V. It is typically used to convert a higher input voltage (10V minimum, up to 37V maximum) to a lower, regulated output voltage. It works by using a voltage reference, a voltage sensing circuit, an error amplifier, and a pass transistor within its circuit.

The voltage reference is set to the desired output voltage value, and this voltage is compared to the voltage at the feedback point. When the voltage at the feedback point drops below the reference voltage, the error amplifier drives the base of the pass transistor, thus increasing the current through the pass transistor and lowering the output voltage. The voltage sensing circuit is used to monitor the output voltage and send a signal to the error amplifier.

The L78LACUTR is designed to operate over a wide temperature range and to withstand a high level of voltage, allowing it to be used in a variety of applications. It is also designed to provide excellent transient response, allowing it to quickly adjust to changes in output voltage loading, making it a reliable and capable device.

Conclusion

The L78L15ACUTR voltage regulator is a linear voltage regulator. It is commonly used for post-regulation, over-voltage and power-failure protection, as well as in battery and supervisory circuits. It is a versatile device and is typically used in applications such as automotive electronics, consumer electronics, telecommunications, industrial control, instrumentation and military systems. It works by using a voltage reference, a voltage sensing circuit, an error amplifier, and a pass transistor within its circuit.

The L78L15ACUTR provides excellent performance, reliability, and versatility, making it a great choice for applications where space is limited and reliable operation in harsh environments is needed. It is also a good choice for line-powered applications such as chargers, DC/DC converters, regulated power supplies, and regulated constant current sources.

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