XB1117P501FR-G

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XB1117P501FR-G Application Field and Working Principle

The XB1117P501FR-G IC is a voltage control linear regulator manufactured by Exar Corporation. This IC is classified as a PMIC (Power Management IC) - Voltage Regulators - Linear, and is an important building block in many different types of electronic applications. Its primary purpose is to regulate an input voltage of up to 4.5V to a precisely fixed output voltage of 5V, at a nominal load current of 1A. The voltage regulation accuracy of the XB1117P501FR-G is ±2%.

The XB1117P501FR-G can be used for a wide range of applications including for smartphones, tablets, embedded systems, and wireless devices. It is also suitable for automotive, medical, and industrial applications. It has a low shutdown current (I_SD) of 0.3μA, and a low dropout voltage (V_DROPOUT) of 44.4mV typical. To ensure that the output voltage remains stable under sudden load changes, the IC integrates latching protection circuitry and an auto reset functionality.

The XB1117P501FR-G operates by controlling the voltage drop across its pass transistor to regulate the output voltage. This is done by utilizing a high performance amplifier and an error comparator. The regulator contains 2 control pins to set the desired output voltages. The voltage error amplifier is a high-speed transconductance amplifier that compares the output voltage to a precision reference voltage to determine the reference current. This is then compared to the feedback current to regulate the output.

The IC can also be operated in a shutdown mode when the Enable Pin is set to low. Being offered in a 5 pin package, the XB1117P501FR-G is also suitable for space-constrained end products. The IC also offers complete protection from reverse polarity, overcurrent, and overtemperature, helping to extend its operating life. Furthermore, the IC\'s high power dissipation capability makes it excellent for applications with narrow board layouts.

Summary

The XB1117P501FR-G is a voltage control linear regulator that can be used in a wide range of applications. It has a low dropout voltage and a low shutdown current, protecting it from reverse polarity, overcurrent, and overtemperature. It is designed to provide a stable output voltage of 5V from an input of 4.5V and has a voltage regulation accuracy of ±2%. Featuring protection circuitry and an auto reset function, the XB1117P501FR-G is a versatile and reliable voltage regulator for any application.

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