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TAR5S30UTE85LF Application Field and Working Principle

The TAR5S30UTE85LF is a medium current linear voltage regulator, which is a type of voltage regulator device, also known as a PMIC (power management integrated circuit). The device falls into the category of linear voltage regulators, which are simple and fixed output devices used to maintain, or reduce, the voltage level of an electrical power system. Its function is to regulate an input voltage of 5.5V to a regulated output voltage of 3.3V with a maximum output current of 1.5A and current limiting protection as well as thermal shutdown.

Application Fields

The TAR5S30UTE85LF has a wide range of potential applications, including but not limited to charging systems for portable electronic devices, industrial power supplies, electronic device, system logic power supplies, automotive and telecom systems. Its low operating voltage and current consumption make it an ideal choice for power supply applications requiring small form factor, saved space, and high stability.

Working Principle

The TAR5S30UTE85LF is a linear voltage regulator. It works by controlling output voltage with a series of transistors and resistors, which are known as linear elements, within the system. This works in three stages:

First, the input voltage is applied to the resistor network, which reduces it and the resultant current is drawn from the output. Secondly, a feedback loop in the system adjusts the output transistor current in proportion with the voltage reduction, and hence maintains the output at an exact level. Lastly, a zener diode is used to maintain the voltage at a set level by stabilizing the current source.

The linear voltage regulator also incorporates several safety features that prevent too high an input voltage from damaging the circuit. This is done by using a series of diodes which help to protect the internal circuitry from a voltage which is too high, or too low. Additionally, the TAR5S30UTE85LF features thermal shutdown, which helps protect the component from potential damage due to high temperatures. The device also features over-current protection which helps to protect the system from any potential damage due to sudden changes in current.

Conclusion

The TAR5S30UTE85LF is a medium current linear voltage regulator which falls into the category of PMIC (power management integrated circuit). It is a versatile component with a wide range of applications, and its low operating voltage and current consumption make it an ideal choice for small form factor power supplies. The device works by using a series of transistors and resistors, known as linear elements, to control output voltage. In addition, the device also has various safety features to protect the circuit from damage due to high or low voltages, as well as over-current protection and thermal shutdown.

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