MC79L12ACLP

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The MC79L12ACLP is a 3-Terminal Negative Voltage Regulator IC specifically designed to provide negative 12V output with a maximum output current of 1000mA. It is part of a highly reliable family of linear voltage regulators manufactured and supplied by ON Semiconductor, and is suitable for use on a variety of applications including automotive systems.This voltage regulator\'s output voltage is adjustable within the range of−1.5V to −13V. It consists of three terminals, the input terminal (Vin), the output terminal (Vout), and the ground terminal (GND). The MC79L12ACLP has a wide input voltage range of −1.5V to −30 V. Thus, it can regulate negative variable inputs from different sources.The MC79L12ACLP voltage regulator typically has a maximum dropout voltage of 1V at 1000mA load. A low dropout voltage ensures a higher efficiency of the regulator by providing less input-to-output voltage differences. The maximum output current for the MC79L12ACLP is limited to 1000mA, making it suitable for a number of low-power applications. The device has a relatively low power dissipation of 1W.The MC79L12ACLP voltage regulator also features an internal current limiting feature which protects the device in case of overload conditions. The thermal protection of the device shuts down the output voltage when the junction temperature reaches 150°C, thus preventing damage and ensuring safe operation. It also contains a reverse-current protection feature which limits current from the output to input in the case of reverse applied voltages.The MC79L12ACLP is available in a standard or surface-mount version, making it suitable for use in a wide range of applications. Some of its applications include automotive systems, medical systems, power supplies, battery chargers, and any other applications requiring a stable negative voltage supply.The MC79L12ACLP linear voltage regulator works on the principle of difference between input and output voltages. It uses a PNP transistor to regulate the voltage, measuring the difference between the output voltage and the reference voltage provided by a voltage divider. The voltage difference is then used to adjust the current through the transistor, thereby regulating the output voltage.In conclusion, the MC79L12ACLP is an excellent choice for negative voltage regulation applications due its wide input voltage range, high efficiency and reliable protection features. Its low power dissipation and adjustable output voltage make it suitable for many applications, especially automotive systems.

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