TPS79912YZUR

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TPS79912YZUR Application Field and Working Principle

The TPS79912YZUR is a low-dropout linear regulator from Texas Instruments. It is designed for use in personal electronics, peripherals and embedded applications. The regulator requires a minimum input voltage of at least 0.4 V above its regulated output voltage for correct operation. The output ripple is low, and the output current can reach up to 1.2A. The main advantage of the TPS79912YZUR is that it can deliver a much lower output ripple compared to other linear regulators.

This linear regulator is used in many personal and embedded electronics because it provides reliable voltage regulation with excellent load regulation. It has a wide input voltage range of 4.2V to 28V, which makes it suitable for most applications. In addition, the TPS79912YZUR features an adjustable output voltage, which makes it easy to use in multiple devices. It is also well-suited for applications that require a fast response to changing loads.

Operation principle

The TPS79912YZUR operates in a way similar to most LDO (Low-Dropout) linear regulators. It consists of an internal p-channel MOSFET which is used to pass current between its input and output. The voltage drop across the internal MOSFET is determined by the output voltage setting and the load current. This voltage drop is then converted into a current into the feedback resistor, which is then compared with the reference voltage. The difference between the reference voltage and the voltage divider voltage is amplified by the internal error amplifier. The amplified error signal is used to drive the gate of the internal MOSFET. This results in a closed loop control system, where the internal voltage regulator takes over and maintains the desired output voltage.

In order to maintain the correct output voltage, the TPS79912YZUR features an automatic input voltage selector. This ensures that the regulator is always providing the correct output voltage under all load conditions. The device is also able to provide over-current protection, which helps to protect it from any overloads and prevents damage. The device also includes several other protection features such as over-temperature protection and reverse current protection.

Applications

The TPS79912YZUR is widely used in many applications, including personal electronics, peripherals, battery operated and embedded systems. These applications require a low-dropout linear regulator to maintain a stable output voltage and provide excellent load regulation. In addition, the device can be used in high-temperature applications due to its wide operating temperature range of -40°C to +125°C.

In personal electronics, the TPS79912YZUR can be used to provide a reliable voltage supply for processors, FPGA, ASIC and microcontrollers. It is also suitable for providing a regulated supply for LCD displays, digital cameras, audio amplifiers and other electronic circuits. In battery operated systems, the TPS79912YZUR can be used to provide a stable power supply and improve the life of the battery. It is also used in embedded applications such as motor control and industrial automation.

The TPS79912YZUR is a low-dropout linear regulator that is designed to provide excellent load regulation in a small form factor. With its wide input voltage range and excellent load regulation, it is an ideal choice for many personal, peripheral and embedded applications.

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