SG7905AK

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SG7905AK is a monolithic integrated circuit with a three-terminal adjustable voltage regulator that is capable of providing adjustable output voltages from 0.8V to 5.1V with a maximum output current of 1.5A. It is a linear voltage regulator that is typically used in the vast majority of applications where a precise and stable output voltage is required. SG7905AK is suitable for both adjustment and fixed applications. It only requires a single external resistance for voltage adjustment.

SG7905AK is designed as a three-terminal on-chip adjustable voltage regulator type with standard operation and a highly accurate reference voltage. It features an internal PNP pass element and other features such as a low current start-up, low quiescent current, and current limiting. SG7905AK functions as a linear regulator with a single PNP pass element, a common emitter output stage, and a single resistor for output voltage adjustment. It is an ideal choice for applications requiring an adjustable voltage source to regulate an output voltage with low current drain over a 0.8V to 5.1V range.

The operation of SG7905AK is based on a simple feedback control principle. The output voltage is regulated by comparing an internal reference voltage to the voltage at the output terminal. When the output voltage reaches the value of the reference voltage, a sensing circuit forces the PNP pass element to regulate the output voltage by adjusting the amount of current flowing through it. The size of the pass current is determined by the resistor for output voltage adjustment and the output voltage level is then adjusted to maintain the balance between the reference voltage and the output voltage.

SG7905AK has many advantages over other types of voltage regulators. It requires a single resistor for output voltage adjustment and it is easy to use. It also provides long-term stability of the output voltage and its low quiescent current makes it suitable for battery-powered applications. The SG7905AK has an operating temperature range of -55°C to 125°C, which makes it suitable for a wide range of applications. Additionally, it features a current limiter, which guards the device against the effects of overload conditions.

The main application of SG7905AK is in regulating the output voltage of a power supply. It is commonly used in portable electronics and other battery-powered applications where the output voltage needs to be precisely regulated for optimal performance. It is also used in circuits where adjustable output voltage is required such as Audio Amplifiers and DC to DC converters. SG7905AK can also be used for various other purposes such as voltage regulators, voltage buffering and current limiters.

In conclusion, SG7905AK is a three-terminal voltage regulator chip with adjustable output voltage ranging from 0.8V to 5.1V. Its simple feedback control principle and the requirement of a single external resistor for output voltage adjustment make it an ideal choice for many power supply applications. The SG7905AK also features low quiescent current, current limiter and wide operating temperature range, making it suitable for a wide range of applications.

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