LD1117V25C

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Introduction: LD1117V25C is a 1.25V voltage regulator from the low dropout (LDO) family. The device is designed to provide the voltage stability, protection, and accuracy that is necessary in many industrial, automotive, and consumer applications.

Application: LD1117V25C has wide variety of applications, most notably voltage regulation and power control. It provides stable output voltage for automotive electronics, personal electronics, and general-purpose power supplies. Additionally, it can be used for over-voltage/short-circuit/reverse-polarity protection, and to protect system power supplies from high-voltage transients. It is especially suitable for low-power, low-noise application, such as audio/video system.

Working Principle: LD1117V25C relies on a low-frequency voltage control technique to regulate the output voltage, reducing the output ripple and noise. Inside the device, a regulating circuit is used to compare the output and reference voltages, and adjust the feedback loop to maintain a constant output voltage every time the input voltage changes. This helps the regulator to remain stable under all conditions.

At the same time, the device also has built-in protection features, such as current limiting, thermal overload protection, and output short-circuit protection. This ensures the safety of the device during operation and protects against damage caused by excessive current or heat. Furthermore, it has a wide operating temperature range and can handle up to 350mA of current.

LD1117V25C is equipped with a three-terminal voltage regulator system, with a ground pin and an adjustable output pin. The current passes from the input pin to the output pin via the internal PMOS pass transistor, and then passes to the ground. The input current also passes through an internal feedback voltage divider circuit, which provides the reference voltage for the regulating circuit.

Conclusion: LD1117V25C is an ideal choice for low noise and low power applications, such as audio/video systems. The device has wide variety of applications, and it provides reliable voltage regulation, current limiting, and protection against over-voltage/short-circuit/reverse-polarity. It also has a three-terminal voltage regulator system and can handle up to 350mA of current.

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