MC7908ACT

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The MC7908ACT is an integrated circuit made by ON Semiconductor which can be utilized as a voltage regulator. It belongs to a family of products within the Power Management ICs (PMIC) global product line under the broader category of Voltage Regulators within the Linear sub-category.

The working principle of the MC7908ACT stems from its main function, offering eight fixed output voltages thanks to its Linear-in-Dropout voltage regulator. This makes it ideal for applications that require low-voltage, high-capacitance, and high-temperature stability, as is seen in today’s automotive production and computing systems. Specifically, the MC7908ACT series includes the following fixed output voltages: 3.3V, 5.0V, 8.0V and 9.0V.

These output voltages offer low and high temperature stability, with +/-2.0mV maximum variation at full-load, and are adjustable up to +/-2.2mV per output from -40°C to 125°C. Furthermore, the Output Voltage Accuracy ensures that the nominal value is within +/-2.0% of the set output voltage for all output voltages. This combined with its 1.9 mV offset maximum and 20mA minimum Load Current provides users with reliable and consistent operation, making it perfect for applications in computing, automotive production and industrial systems, medical equipment, and consumer electronics.

The MC7908ACT is designed to operate with an input voltage range of 4.90V to 37V, with a maximum internal power dissipation of 625mW. This range of input voltages is ideal for powering systems that require multiple voltages, such as computers and modern electronic administration systems, as well as automotive production. With its extremely low quiescent current of 10μA, the MC7908ACT is the perfect device for applications that require high efficiency or those operating from limited power supplies.

Moreover, the circuit has a high-efficiency, low-dropout voltage regulator, capable of outputting up to 5.0A of current, benefiting applications with high-input voltage and low-output voltage requirements, such as notebook chargers. The MC7908ACT is also equipped with a Thermal Shutdown Circuit, providing additional safety against excessive temperature due to a fault or overload. Its Active-Low Enable pin allows the device to be shut down or enabled based on a logic signal, while its Undervoltage Lockout (UVLO) prevents it from operating below its minimum recommended input voltage.

The MC7908ACT is available in an array of packages to best suit customer needs, such as the 8-lead PDIP, 3-lead TO-220, 2-Lead TO-263, and 2-Lead D2PAK. Thus, integrating cost-effective and easy to mount components for the highest performance, benefitting a broad range of end-users and applications. With the capabilities and quality of the MC7908ACT, ON Semiconductor provides a reliable and trusted device that streamlines production and improves functionality.

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