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TC1173-3.3VOATR Application Field and Working Principle

The TC1173-3.3VOATR is a voltage regulator integrated circuit that is widely used in portable consumer devices, due to its low power dissipation, small size and high accuracy. TC1173-3.3VOATR provides a regulated output voltage of 3.3V, which is suitable for powering various consumer electronic products, such as MP3 players, digital cameras, personal data assistant (PDA) devices, and mobile phones.

The TC1173-3.3VOATR belongs to the class of linear voltage regulators, which are low-dropout devices that provide a regulated output voltage without having to use large transformers and other power stages. The input voltage of the TC1173-3.3VOATR must be higher than the output voltage, and the input voltage range is from 4.75V to 16V. The TC1173-3.3VOATR can regulate a maximum current of 200mA and has a minimum output ripple noise of 0.05V.

The TC1173-3.3VOATR is a three-terminal voltage regulator, consisting of a control terminal, an input terminal and an output terminal, as seen in the pinout diagram below.

The working principle of the TC1173-3.3VOATR voltage regulator is the same as that of other linear voltage regulators. The control terminal is used to set the output voltage level, and the output voltage is maintained by the mean of a feedback loop. When the output voltage deviates from the preset voltage level, the error signal is sent to the control terminal and is used to adjust the parameters of the integrated circuit, in order to maintain the desired output voltage level. The control terminal can be adjusted using external components, such as resistors and capacitors.

The integrated circuit also contains several protection circuits, such as over-current protection, over-temperature protection, and reverse-voltage protection, which protect the circuit from damage due to abnormal operating conditions. The TC1173-3.3VOATR has a low dropout voltage, which makes it ideal for low-voltage applications, such as portable electronic devices.

In summary, the TC1173-3.3VOATR is a linear voltage regulator integrated circuit that provides a precise output voltage of 3.3V. It is suitable for powering a variety of low-voltage consumer electronics, and contains several protection circuits for safeguarding the circuit from abnormal operating conditions.

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