TC1303B-ZH0EMF

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TC1303B-ZH0EMF Application Field and Working Principle

The TC1303B-ZH0EMF is a low power device used in applications such as portable electronics, medical and industrial control where efficient power management and reliability is paramount. It is a linear regulator that provides a regulated output voltage from an unregulated input voltage. It is designed to reduce transient feedback noise, provide low quiescent current and extended voltage range. The device also provides a switch mode of operation for higher efficiency applications with lossless current sensing.

Application Field

The TC1303B-ZH0EMF is primarily used for low power applications such as medical devices, portable electronics and industrial control. The device combines the benefits of a reliable linear regulator and the efficiency of switch mode operation to provide a wide range of applications. Such devices are useful for providing a low noise and reliable output voltage, even under varying input conditions.

Working Principle

The TC1303B-ZH0EMF contains a voltage reference, error amplifier, control circuitry and power stages. In linear mode, the voltage reference is used to maintain a regulated output voltage. The error amplifier senses any output voltage fluctuations and increases or decreases the reference voltage as required. This in turn provides a stable output voltage over varying input conditions.

In switch mode operation, the device uses an N-Channel MOSFET to provide an efficient output stage. The control circuitry takes the error voltage from the error amplifier, transforms it into a high frequency pulse signal, and drives the MOSFET. This enables the device to reduce the power dissipation, improve the efficiency and reduce the noise of the device. The power stage consists of a MOSFET and a high frequency transformer which acts as current sense for the MOSFET.

Conclusion

The TC1303B-ZH0EMF is a low power device designed primarily for medical devices, portable electronics and industrial control applications. It combines the regulatory performance of a linear regulator and the efficiency of switch mode operation to deliver a wide range of applications. It provides a reliable output voltage with low quiescent current and low noise operation. It also provides a switch mode of operation for higher efficiency applications with a lossless current sense.

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