AZ1117CR-3.3TRG1 Integrated Circuits (ICs)

Voltage Dropout (Max):	--
Supplier Device Package:	SOT-89
Package / Case:	TO-243AA
Mounting Type:	Surface Mount
Operating Temperature:	-20°C ~ 125°C (TJ)
Protection Features:	Thermal Shutdown
Control Features:	--
PSRR:	70dB (120Hz)
Current - Quiescent (Iq):	6mA
Current - Output:	800mA
Series:	AZ1117C
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	3.3V
Voltage - Input (Max):	15V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Reel (TR)

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AZ1117CR-3.3TRG1 Application Field and Working Principle

Voltage regulators, also known as linear regulators, are devices that aim to control the voltage by converting a varying voltage level into a steady or constant voltage. The AZ1117CR-3.3TRG1 voltage regulator is a 3-terminal device designed to regulate the output voltage at 3.3V. It offers a typical maximum output current of 0.35A.

Application Field

The AZ1117CR-3.3TRG1 voltage regulator is mainly employed in applications requiring a low output voltage, such as power supply systems for voltage-sensitive components (fans, motors, microprocessors, etc). It is also frequently used as a standalone regulator for low-voltage applications, as well as for other power supply systems.This regulator is also suitable for replace an existing inefficient, and bulky, linear power supply design. It eliminates the need for bulky components and improves overall system efficiency by more efficient regulation. The AZ1117CR-3.3TRG1 can also be employed in applications with high power output requirements.

Working Principle

The AZ1117CR-3.3TRG1 works on the principle of series voltage regulation. This means that it regulates and stabilizes the output voltage by regulating the current delivered by its two power terminals.The device consists of two major elements – a voltage regulator and an output device. A basic operating cycle of the voltage regulator is as follows: The device first monitors the voltage at its (+) input terminal. When the input voltage level exceeds the device’s reference value, the voltage regulator activates its output transistor, thereby allowing current to flow from its (+) input terminal to its (-) output terminal. This makes the output voltage of the regulator rise until it reaches the reference value. When the input voltage drops, the output device is turned off and the output voltage of the regulator decreases to the reference value.In applications such as microprocessors, the output voltage is continually monitored and adjusted by the voltage regulator to ensure its stability at the preset level. This provides protection from overvoltages and under-voltages, as well as keeping any fluctuations in the output voltage within acceptable limits.

Conclusion

The AZ1117CR-3.3TRG1 voltage regulator is a 3-terminal device designed to regulate the output voltage at 3.3V. It offers a typical maximum output current of 0.35A and is mainly employed in applications requiring a low output voltage, such as power supply systems for voltage-sensitive components. The device works on the principle of series voltage regulation and is capable of providing protection from over-voltages and under-voltages. Overall, the AZ1117CR-3.3TRG1 is a reliable and efficient solution for power supply applications.

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