PMIC - Voltage Regulators - Linear

The TPS71730DCKT is a voltage regulator integrated circuit (IC) used to provide a regulated output voltage from an input power source. It is a compact, low-voltage, three-terminal linear voltage regulator. It provides an accurate regulated output voltage of up to 1.29V and can regulate a maximum current of 2mA, allowing it to be used in a wide range of electronic applications.

Applications

The versatility and simplicity of the TPS71730DCKT make it suitable for a wide range of applications. It is commonly used in low-voltage systems and can provide stable, regulated voltage for circuits such as audio and instrumentation amplifiers, RF receivers, cellular base stations, vehicle and consumer electronics, and many other consumer and industrial applications.

Working Principle

The TPS71730DCK operates as an adjustable voltage regulator, with an adjustable output voltage from 0V to 1.29V (adjustable via an external resistor). It uses a three-terminal configuration which combines the voltage reference, error amplifier, and output transistor into a single package. The circuit operates as follows: An internal reference voltage is applied to the reference terminal and feedback is provided to the error amplifier, which then adjusts the gate voltage of the output transistor. This adjusts the output voltage to maintain the desired output voltage. This setup allows for very low-noise operation and provides for good regulation of output voltage over temperature and load variations.

Internally, the TPS71730DCK features over-current protection, over-temperature protection, thermal shut-down, and reverse-current protection, allowing it to be used in applications where reliability, safety, and ease-of-use are of paramount importance. The device also has wide operating temperature range (-40 to 85°C), making it suitable for a variety of automated industrial and consumer applications.

Conclusion

The TPS71730DCK is a versatile, low-voltage, three-terminal linear voltage regulator suitable for use in a wide variety of electronic applications. Its adjustable output voltage, low-noise operation, wide operating temperature range, and various safety features make this device an excellent choice for both industrial and consumer applications.