TPS72301DBVR

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TPS72301DBVR Application Field and Working Principle

The TPS72301DBVR is an ultra-low-dropout linear regulator specially designed for ultra-small, low-power applications. It is an ideal voltage regulator for applications that require highly accurate, low noise, and low dropout voltages, such as driving high-efficiency LED backlighting, microcontrollers, and various analog circuits.

Application Field

The power dissipation of the TPS72301DBVR is only equal to the dynamic load current, so it is suitable for most power supply applications. For example, it can be used to power the various onboard circuits on the main board of the computer, to regulate the power supply of the low-voltage analog circuit, or to use a lower voltage for the microprocessor and memory. The wide input voltage range allows the TPS72301DBVR to work in most power supply networks, even under a wide range of input voltage fluctuations. Its features make it a great option for applications where high accuracy, low dropout voltage, low noise, and efficiency are paramount.

The TPS72301DBVR is also an excellent choice for LCD backlighting applications, as its low quiescent current and high accuracy makes it the ideal solution for these systems. Due to its available options of output voltages ranging from 0.6V to 7V, the TPS72301DBVR can be used to power a variety of low voltage applications.

Working Principle

The TPS72301DBVR uses a linear regulator to regulate an input voltage source and provide an output voltage that is slightly lower than the input voltage. It works by using a control transistor to control the current flowing through a resistor, which in turn controls the output voltage. The transistor\'s gate is connected to a feedback loop, which controls the current through the resistor by adjusting the voltage at the gate.

The feedback system allows the TPS72301DBVR to regulate the output voltage accurately. The adjustable output voltage is set by two external resistors, and the voltage is controlled by an internal reference voltage. The reference voltage ensures accuracy of the voltage output over the full temperature range, which makes the TPS72301DBVR ideal for high accuracy applications.

The TPS72301DBVR also features an internal power saving mode, which allows the regulator to reduce its quiescent current when the output current is reduced. This feature allows the TPS72301DBVR to remain cool, reducing power losses and increasing the efficiency of the regulator.

In addition to these features, the TPS72301DBVR also includes a soft start circuit, which gradually ramps up the output voltage to help reduce inrush current and eliminate audible noise. It also includes overcurrent and thermal protection circuits, which provide protection against excessive current or thermal overload.

Conclusion

The TPS72301DBVR is an excellent linear regulator for applications that require high accuracy, low noise, and low dropout voltages. Its adjustable output voltage range and power saving mode make it a great option for LCD backlighting applications, as well as for powering microprocessors and memory. Its features also make it suitable for powering onboard circuits in computers and other low-voltage analog circuits.

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