L7812CD2T

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The L7812CD2T is a Negative Linear Voltage Regulator with an adjustable output range of -1.2V to -47V. It requires a very low Startup Voltage of only 1.5V, making it suitable for low Voltage applications. The L7812CD2T is a current-driven type Linear Regulator. It uses an internal modulator circuit to control the output voltage of the device by sensing the voltage across the external current sensing resistor. The output voltage is regulated by controlling the current into or out of the output pin. It is ideal for applications such as negative power supply designs and adjustable current sources.

The L7812CD2T is designed to deliver up to 1.5A of continuous output current. It has short-circuit protection and Reverse Current Protection, making it very reliable in various operating environments. It also has power-down mode that reduces the supply current to virtually zero when the device is not used. In addition, the regulator includes a built-in thermal protection circuit which temporarily shuts down the device if the junction temperature exceeds 150°C. This makes the L7812CD2T suitable for a wide range of applications.

The L7812CD2T features a wide range of application fields due to its robustness and reliability. It is suitable for powering audio amplifiers, such as cellphone or tablet amplifiers, as well as for industrial equipment such cooling fan. It can also be used for driving LCD displays or instrumentation devices, such as digital meters and water meters. Additionally, the L7812CD2T is often used to provide regulated negative voltages for power supply designs.

In order to use the L7812CD2T properly, it is important to understand the device’s working principle. The L7812CD2T is a current-driven type Linear Regulator. It uses an internal modulator circuit to control the output voltage of the device by sensing the voltage across the external current sensing resistor. The output voltage is regulated by controlling the current into or out of the output pin. In order to provide the necessary output current, the input voltage must be at least 1.5V higher than the desired output voltage. This ensures that the internal pass transistor is able to operate in its linear region.

The L7812CD2T features an adjustable output which can be set using the external control terminal. This terminal allows the user to adjust the output voltage between -1.2V and -47V by simply changing the reference voltage applied to the terminal. This makes the L7812CD2T suitable for a wide range of applications, from powering audio amplifiers to providing regulated negative voltage for power supply designs.

In conclusion, the L7812CD2T is a Negative Linear Voltage Regulator with an adjustable output range of -1.2V to -47V. It is suitable for a wide range of applications such as audio amplifiers, LCD displays, instrumentation devices and negative power supplies. The device uses an internal modulator circuit to control the output voltage of the device by sensing the voltage across the external current sensing resistor. The output voltage is regulated by controlling the current into or out of the output pin and its adjustable output can be set using the external control terminal. It is important to understand the working principle of the device in order to use it properly.

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