TPS75801KC

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TPS75801KC is a linear voltage regulator typically used in microprocessor and digital circuits due to its low operating voltage and high current handling capacity. This regulator is designed for use in devices ranging from handhelds to automotive applications. It is capable of regulating 3.3V to 12V with the minimum output current of 6mA. The main feature of this voltage regulator is its low quiescent draw of just 52uA, which makes it suitable for battery-operated devices.

This voltage regulator has a wide range of applications. It is used in consumer electronics such as digital cameras, PDAs, notebooks, camcorders, and gaming consoles. It is also widely used in industrial applications such as monitoring systems, industrial controllers, and data logging systems. Additionally, it can be used in automotive applications including navigation systems, in-car entertainment systems, and control systems.

The TPS75801KC voltage regulator has a working principle that enables it to supply a constant and regulated output voltage by compensating for line and load variations and other parameters such as dopant level. Internally, the voltage regulator consists of a 0.65 V reference voltage, a voltage feedback amplifier, a series pass transistor and current sources.

The reference voltage is provided by a bandgap reference circuit which provides the necessary offset voltage. This voltage is then compared to the voltage at the sensing pin (VFB) by the voltage feedback amplifier. The voltage feedback amplifier then amplifies the difference between these two voltages and provides an appropriate output to the base of the series pass transistor. This, in turn, regulates the output voltage to the required value by compensating for line and load variations as well as other parameters.

Besides, the TPS75801KC also has other interesting features such as over voltage protection, power good indicator, and a shutdown pin. The over voltage protection feature protects the device from sustained output voltages higher than the rated maximum. This ensures that the output voltage will not be greater than the over-voltage limit value. Similarly, the power good indicator provides an indication when the output voltage is within the specified range, thus providing status information to the user. Lastly, the shutdown pin can be used to put the voltage regulator in the off-state, thus reducing power consumption in the system.

To conclude, the TPS75801KC is a low operating voltage and high current handling linear voltage regulator that is used in many applications ranging from consumer electronics to automotive applications. The main feature of this voltage regulator is its low quiescent draw of just 52uA and it also offers over voltage protection, power good indicator and a shutdown pin capabilities. By understanding its working principle and features, one can better understand how and why it is used in modern electronics applications.

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