LT3065EDD-2.5#TRPBF

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The LT3065EDD-2.5#TRPBF is a precision low-dropout linear voltage regulator (LDO) from analog parts manufacturer Linear Technology. This 0.5A LDO has a maximum input voltage of 28V and a low quiescent current of 90uA (typical). It’s suitable for energy-conscious applications in battery-powered systems, and is available in the popular SO-8 package size. This article will discuss the application and working principle of the LT3065EDD-2.5#TRPBF LDO.

Applications

The LT3065EDD-2.5#TRPBF is suitable for a variety of battery-powered applications, such as wall adapters, handheld applications, notebook computers, and automotive electronics. The LDO has an extremely low quiescent current, making it an ideal solution for battery-powered systems where long run times are desired. With its low noise, low quiescent current, and precision accuracy, the LT3065EDD-2.5#TRPBF is also suitable for systems that require high-accuracy power management. Its low-dropout capability allows it to regulate up to 28V inputs, enabling its use in systems with multiple battery cells.

Working Principle

The LT3065EDD-2.5#TRPBF utilizes a control loop system to regulate accurate output voltages. It features low-dropout capabilities, delivering up to 0.5A of load current with less than 0.2V headroom, while still operating over an input voltage range of 2.5V to 28V. The LT3065EDD-2.5#TRPBF contains a high-accuracy, low-offset reference, an error amplifier, a P-channel power MOSFET, current-limiting circuitry, and other protection features. The error amplifier compares the voltage at the OUT pin to the internal reference voltage and regulates the output accordingly. The P-channel power MOSFET is used as the main current source and provides the load current on the OUT pin. The current-limiting circuitry provides short-circuit protection and limits the current to a certain level in case of a short-circuit event. In addition, thermal protection circuitry shuts down the LDO if the junction temperature exceeds a certain level.

Conclusion

The LT3065EDD-2.5#TRPBF is a high-accuracy, low-dropout linear voltage regulator from Linear Technology. It has an extremely low quiescent current of 90uA (typical), making it suitable for battery-powered applications. With its wide input voltage range of 2.5V to 28V, it’s a great choice for systems with multiple battery cells. The LT3065EDD-2.5#TRPBF incorporates a control loop system to regulate accurate output voltages, with additional features such as current-limiting circuitry and thermal protection to provide comprehensive protection in case of short-circuit events and elevated temperatures.

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