KA78R12CTSTU

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KA78R12CTSTU Application Field and Working Principle

KA78R12CTSTU is a linear voltage regulator, manufactured by Texas Instruments as part of their Power Management IC (PMIC) product line. It is a three terminal, positive voltage regulator designed for local on-card voltage regulation. This type of voltage regulator is used to maintain a regulated voltage supply at the output, which is usually lower than its input voltage. The KA78R12CTSTU regulator delivers a regulated output voltage of up to 12 V with a maximum output current of 1 amp. It is typically used in applications requiring up to 12 V linear regulation with forced-air cooling, such as notebook computers, server systems, industrial & medical systems, telecom systems, and other related products.

KA78R12CTSTU Working Principle

The KA78R12CTSTU linear voltage regulator operates according to a standard linear regulator circuit. It features an adjustable output voltage that can be set anywhere between 12V to 24V. The regulator has an error amplifier that compares the reference voltage to the actual output voltage and regulates the output voltage accordingly. The output voltage is set by an external voltage divider connected to a common pin. A feedback loop ensures that the output voltage remains constant and overcomes any environmental or load related changes.

The regulator also features built-in protection functions to protect it from over voltage, over current, over temperature and short circuit conditions. A built-in over current protection prevents current from flowing excessively, which could cause damage to the regulator or system. An over voltage protection provides a safety measure by limiting the output voltage and preventing it from exceeding the rated output voltage. The over temperature protection is also beneficial in keeping the regulator and system cool, since it shuts off the output voltage when the temperature exceeds the recommended limit.

Features and Benefits

The KA78R12CTSTU linear voltage regulator offers a lot of features and benefits that make it a suitable component for many applications. Its high maximum output current makes it suitable for power supplies with high current demands. It is also highly efficient and provides a wide range of operating temperature ranges, making it ideal for environments where temperature fluctuations are common. The adjustable output voltage capability makes it a great choice for applications where a precise voltage needs to be maintained. The built-in protection functions also make it a reliable component that offers exceptional protection against a wide range of fault conditions.

Conclusion

The KA78R12CTSTU linear voltage regulator is a versatile and reliable component that is suitable for many applications that require precise voltage regulation. Its adjustable output voltage capability, high maximum output current and built-in protection functions make it a great choice for power supply designs with high current demands and areas with frequent temperature variations. The KA78R12CTSTU is a popular and reliable component for voltage regulation projects.

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