MC7809ACT

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MC7809ACT is a linear voltage regulator that provides a constant 9 V output, with an input voltage ranging from 8 V to 16 V. The MC7809ACT is part of the MC780 series of 3-terminal voltage regulators from Motorola (now Freescale Semiconductor). Each regulator has an output current of up to 1.5 A and offers thermal protection, current limit, and output adjustment. Additionally, the MC7809ACT has an integrated output current limiter with a maximum differential impedance magnitude of 0.1 ohm.

The MC7809ACT is designed for a wide range of applications. It can be used in consumer electronics such as DVD players and PDAs, medical systems such as ventilators and patient monitors, and industrial systems such as HVACs, motor control systems, and process controllers. The MC7809ACT is also commonly used in 3.3 V and 5 V logic circuits and communications systems.

The MC7809ACT is a linear voltage regulator, meaning it operates by varying its output voltage from a fixed value linearly in response to the input voltage. The exact output voltage is determined by a resistive divider which sets the desired output. The device works by comparing the output voltage and the reference voltage from the divider and then changing the gate current of the output MOSFET until the output voltage matches the reference voltage.

The MC7809ACT is a self-contained linear regulator and does not require external components for most applications. It is packaged in a 8-pin TO-220 package that allows for easy thermal monitoring and is designed with low noise, low power consumption and very good output line regulation. The device also provides current limit and thermal protection, which further reduces the possibility of failure.

The MC7809ACT is an easy-to-use and low-cost voltage regulator and is an ideal choice for applications that require a reliable and consistent supply of 9V. The device is designed to be an efficient and robust solution that offers excellent reliability and power consumption, making it suitable for a wide variety of applications.

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