BAV70-E3-18

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Diodes, also known as rectifiers, are essential components of modern electronic equipment. Arrays of diodes can form a variety of different electrical circuits and are used to convert and regulate signals in a wide range of applications. The BAV70-E3-18 is a diode array specifically designed for switching and interface applications. It is particularly suitable for low-voltage devices, such as DC-DC converters, AC to DC converters and switching regulators.

The BAV70-E3-18 is a two-stage array of MOSFET and Schottky diodes with an integral source follower stage. The array consists of four individual MOSFETs with integrated Schottky diodes, forming two differential pairs. The diodes have a high blocking voltage (VBO= +70 Volts), low-on resistance (RDSON = 0.28 Ohm) and low-switching speeds. The source follower stage has an open-drain output, providing an ideal interface between voltage sources and loads. This stage also minimizes contact bounce and overvoltage transients.

The BAV70-E3-18 can operate in three different modes: switching, logic and quasi-logic. In switching mode, the diode array is used to switch between two voltage sources, such as a battery and a DC-DC converter. In logic mode, the diode array is used to control digital signals on the IC. In quasi-logic mode, the array is used to emulate digital signals without making physical connections. Regardless of mode, the array is designed for low-voltage applications and can also be used in high-voltage systems.

The working principle of the BAV70-E3-18 diode array is simple. When the Schottky diode is blocked, the MOSFET acts as an open switch. This allows current to flow from the source to the load when the voltage applied to the anode is greater than the voltage at the cathode. When the voltage applied to the anode is lower than the voltage at the cathode, the Schottky diode is now forward biased. This allows current to flow from the load to the source, essentially reversing the flow of current. The source follower stage amplifies the signal and reduces contact bounce and transients.

In summary, the BAV70-E3-18 diode array is a great choice for switching and interface applications. It is well-suited for low-voltage devices, such as DC-DC converters, AC-DC converters, and switching regulators. The array can be used in switching, logic, and quasi-logic mode and provides excellent switching speed, high blocking voltage, and low on resistance. The source follower stage provides an ideal interface between voltage sources and loads by amplifying signals and minimizing contact bounce and overvoltage transients.

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