MC78M08ACTG

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Traditional linear voltage regulators provide a regulated output voltage by establishing a relatively large voltage drop between the input and output. Usually, this is done by using an internal pass NPN or PNP transistor whose emitter is connected to the output and collector to the input terminal of the regulator. The control terminal of this transistors is fed with a reference voltage derived from a temperature-compensated bandgap reference.The MC78M08ACTG is a positive voltage regulator offering a current-limiting, thermal-shutdown circuit and short-circuit current-limit protection. It employs a fixed 3-pin TO-220 package with a maximum output current of 0.8A. The MC78M08ACTG provides a fixed output voltage with an accuracy over the full range of operating temperature. It includes an internal temperature-sensitive current-limiting circuitry for protection against excessive output current conditions. It also includes a thermal overload protection circuit that guarantees that the device can be operated continuously with no risk of destructive overheating.The MC78M08ACTG can be used in a variety of applications including computer, telecom, portable electronics and automotive. It is well-suited for applications such as DVD players, hard drives, CD players, audio amplifiers, server power supplies, set-top boxes, and low power distributed systems.The working principle of the MC78M08ACTG is based on series voltage regulator pattern. Basically, it has two terminals namely voltage output (VOUT) and current input (IIN). The current input terminal is connected to the power supply, while the voltage output terminal is connected to the load. When the voltage on the input (IIN) terminal is greater than the needed output voltage on the VOUT terminal, the MC78M08ACTG operates in series mode, with the regulated output voltage being the difference between the voltage at VOUT and IIN. The MC78M08ACTG acts as a current limit device by using an internal transistor and a precision band-gap reference.The MC78M08ACTG provides the user with an adjustable output voltage. The output voltage is adjustable by the use of external resistor and capacitor, which serve as bleeder resistors. The output voltage of the MC78M08ACTG is controlled by the internal transistor and the reference voltage produced by the voltage reference diode.The MC78M08ACTG is a short-circuit protected device. Basically, it monitors the output current and limits it to a pre-determined level. This current-limiting response is temperature-compensated to ensure consistent performance over a wide temperature range.The MC78M08ACTG can be used in a variety of applications that require a regulated output voltage with good accuracy and temperature stability. It is particularly suitable for consumer applications that include DVD players, hard drives, CD players, audio amplifiers, server power supplies, set-top boxes, and low power distributed systems.To sum up, the MC78M08ACTG is a positive voltage regulator featuring current-limiting, thermal-shutdown circuit, and short-circuit current-limit protection. It is well-suited for protecting electrical and electronic devices from overcurrent and overtemperature conditions. Furthermore, the MC78M08ACTG provides the user with an adjustable output voltage, making it ideal for a variety of consumer applications.

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