L78L08ABUTR

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The L78L08ABUTR is a three-terminal voltage regulator from STMicroelectronics. It is part of a family of linear regulators in the PMIC (Power Management ICs) category that are designed to provide a regulated output voltage from a given input source. This voltage regulator is tailored for use in low-voltage, low-consumption applications, making it an ideal part for use in embedded systems and mobile platforms.

The L78L08ABUTR provides a wide input voltage range, allowing it to operate easily with a variety of input sources, including batteries and USB power supplies. It can also provide a regulated output voltage over a temperature range of -40 to 85 °C. This voltage regulator is capable of providing up to 500 mA of output current, making it suitable for powering small motors, LED arrays, and other relatively low-current electronics.

The L78L08ABUTR functions by using an internal PNP transistor to control the output voltage level. It includes a built-in reference voltage of 8V, which can be adjusted with an external resistor for different output voltages. When the input voltage is higher than the output voltage, the device turns on the PNP transistor, detecting the difference between the input and output and providing a path for current to flow in order to reduce the output. Conversely, when the output voltage is higher than the input voltage, the PNP transistor is turned off, preventing current from flowing and further increasing the output voltage.

This makes the L78L08ABUTR highly versatile, as it can be used in a wide range of applications. It can be used as a simple power supply for low-consumption circuits, or as a voltage regulator to maintain a constant output voltage in higher current applications. It is also useful in battery-powered systems, allowing the user to design a power system that can automatically adjust to changes in the battery level, providing consistent output power even as the battery drains.

In addition, the L78L08ABUTR includes some additional useful features. It includes an EN input pin, which when set as high activates the device, allowing it to start regulating the output voltage. It also includes an output disable pin which when set as high disconnects the output from the device, preventing current from flowing and avoiding any unwanted short circuits. Finally, it includes over-current protection, which shuts the device off if the load current exceeds the peak rating to avoid damage to the device.

The L78L08ABUTR is a reliable and easy to use three-terminal linear voltage regulator, offering a wide variety of features useful for low-voltage, low-current applications. With its wide input range, temperature range, and internal protection algorithms, the L78L08ABUTR is able to provide the user with a wide range of options, making it a reliable choice for powering a variety of low-power electronics.

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