AZ1117CR-5.0TRG1

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AZ1117CR-5.0TRG1 is a linear voltage regulator in Power Management Integrated Circuit (PMIC) category. It helps in providing a regulated output voltage to different devices and system, based on the required input voltage range. This article gives an overview of AZ1117CR-5.0TRG1 application field and working principle.

Applications:
AZ1117CR-5.0TRG1 belongs to the AZ1117 series of power regulators. This series is designed for space-limited, low-cost, rechargeable, non-isolated AC/DC adapter and charger applications. The AZ1117CR-5.0TRG1 supports input voltage from 8.5V to 40V and provides a regulated output voltage of 5V with a maximum load current of 1000mA. Typical features include over-current protection and thermal shutdown. The device is available in the through-hole TO-220-5L package and SOP-8 package, which suitable for both automated and manual assembly.

Working Principle:
AZ1117CR-5.0TRG1 is a linear voltage regulator. It is a type of electrical regulator which is used to provide a stable output voltage. It maintains the output voltage at a constant value in spite of variable input voltage and changing load conditions. The device use the linear TAP (Terminal Assignment Pin) approach to set the voltage output. The voltage output is generated by a series of cascaded transistor passes, from the PNP pass to the NPN pass, to the GND pin and finally to the output pin. The voltage that is output will be determined by the internal voltage reference and the voltage divider network. The voltage reference is used to set the current reference, and the voltage divider network is used to read the output voltage. The current reference will adjust the base current of the npn transistor, which the output voltage is tied to. Therefore, when the output voltage changes, the current reference will adjust the base current accordingly, achieve stable output voltage regulation.

In conclusion, the AZ1117CR-5.0TRG1 is a linear voltage regulator suitable for AC/DC converters and charging applications. It features input voltage range from 8.5V to 40V and a 5V regulated output voltage with maximum load current of 1000mA. It is available in the through-hole TO-220-5L and SOP-8 package. It works by using a linear TAP (Terminal Assignment Pin) approach to set the voltage output and adjusting the base current of the npn transistor for achieving stable output voltage regulation.

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