SPX29301T5-L-3-3

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SPX29301T5-L-3-3 Application Field and Working Principle

The SPX29301T5-L-3-3 is a low voltage linear voltage regulator from Silicon Labs. It is a three terminal LDO (Low Drop Out) voltage regulator with an adjustable output voltage range of 0.8V to 5V. The input voltage for the part can range up to 20V. This makes it suitable for applications such as industrial, automotive, low power wireless and consumer electronics.

The SPX29301T5-L-3-3 is highly efficient and can deliver up to 300mA of output current. It has a very low quiescent current and is capable of regulating voltage with a load current of 50μA. It is equipped with built-in protection features including over-current protection and over-temperature protection. The device also features a power good flag that signals when the regulated voltage is within acceptable limits.

Working Principle

The SPX29301T5-L-3-3 is a linear voltage regulator with an adjustable voltage output range of 0.8V – 5V. The device works by regulating the output voltage at a constant set point. It does this by sensing the voltage at its output and then controlling the input voltage so that the output voltage remains at the set point.

The part contains an internal power MOSFET with a gate-source voltage of 10V. When the output voltage falls below the set point, the internal MOSFET turns on and increases the input voltage, thus raising the output to the set point. When the output voltage rises above the set point, the MOSFET turns off and reduces the input voltage, thus lowering the output back to the set point.

Applications

The SPX29301T5-L-3-3 voltage regulator is suitable for a wide range of applications. It can be used in industrial, automotive, low power wireless and consumer electronics applications. It is ideal for use in applications where a low quiescent current and linear regulation are desired. Examples include battery powered systems and systems with sensitive input signals.

Due to its wide input and output voltage range, the device can be used in a variety of applications requiring high efficiency and tight regulation. Examples include power conversion, portable device battery charging, power supply design and power management systems.

Conclusion

The SPX29301T5-L-3-3 is a low voltage linear voltage regulator from Silicon Labs. It is equipped with built-in protection features including over current protection and over temperature protection. The device can deliver up to 300mA of output current and has a very low quiescent current. It is suitable for a wide range of applications including industrial, automotive, low power wireless and consumer electronics.

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