TPS7101QDR

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A linear voltage regulator, such as the TPS7101QDR, is an active electronic device that is designed to provide a stable output voltage and current while being able to handle different input voltage ranges. This makes a linear voltage regulator well suited for a variety of applications. The TPS7101QDR is a low-dropout (LDO) linear voltage regulator that offers high performance and ultra-low quiescent current for portable applications.

TPS7101QDR Application Field

The TPS7101QDR is commonly used in portable and battery-powered devices. It is designed to provide a stable voltage and current source that is capable of accepting input voltage of levels as low as 1V while providing an average output current of up to 150mA. Its low quiescent current makes it suitable for use in battery-powered or solar-powered devices. It is also capable of supporting multiple outputs and providing a wide range of output voltage levels. The device is also built with advanced protection features such as over-temperature protection, output over-current protection, reverse battery protection, and under-voltage lockout.

TPS7101QDR Working Principle

The TPS7101QDR operates on the principle of dissipating excess power from the output stage in order to maintain a constant output voltage. This is accomplished by a pass element, which is an active transistor, that is constantly scanning for variations in the output voltage. When the output voltage deviates from the desired level, the transistor will immediately act to dissipate excess power from the output stage in order to maintain the output voltage at the desired level.

The TPS7101QDR also features an enable pin, which enables and disables the device. In a disabled state, the device will not provide any output voltage, however the input current is still present. The device also features an open-drain feature, which allows the output voltage to drop to ground level. This is often used in applications where the load receives power through a ground-referenced connection.

Conclusion

The TPS7101QDR is a low-dropout linear voltage regulator that offers high performance and ultra-low quiescent current for portable applications. Its wide range of input and output voltages and advanced protection features make it suitable for a variety of battery-powered and portable applications. Its low quiescent current and the ability to disable the regulator when not needed are also valuable features that make the TPS7101QDR suitable for portable applications.

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