LM5165YDRCR

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The LM5165YDRCR is an advanced current-mode pulse width modulation (PWM) controller that is used in DC to DC switching regulator applications. It is specifically designed to be used in non-isolated buck and buck-boost converters. This PWM controller offers high-performance features such as wide input range and low quiescent current.

The LM5165YDRCR offers a wide input voltage range that supports up to 36V input and is capable of delivering up to 8A output current. It also features an internally adjustable current limit, thermal shutdown protection, as well as over-voltage and short-circuit protection. The LM5165 can operate in a pulse frequency modulation (PFM) mode or pulse width modulation (PWM) mode making it suitable for both light load or heavy load applications.

The working principle of the LM5165 is based on the concept of current mode control. In current mode control, a current limit is set created by an external sense resistor R sense. This current limit is monitored by the LM5165, and any overcurrent detected is regulated by control signals generated by the LM5165 to control the power switching devices. This ensures that the output current is constantly kept at the safe limit. The current limit comparator provides continuous monitoring of the output current to ensure maximum system efficiency.

The LM5165 also includes a temperature-compensated reference (TCR) which provides a stable and precise output voltage. This allows the user to accurately and easily set the output voltage by simply adjusting externally connected components. The LM5165 also allows users to set the frequency of the PWM signals, enabling higher efficiency and improved EMI performance, as well as faster transient response. The LM5385 is a variant of the LM5165 and it is designed for operation at lower voltage levels.

The LM5165YDRCR is a universal and versatile application-specific DC to DC switching regulator for a wide range of DC to DC power conversion applications. It is suitable for use in automotive, communications, battery, and general-purpose applications. It is a great choice for high-performance systems due to its high efficiency, low quiescent current, wide input range, and effective short-circuit and overload protection.

In conclusion, the LM5165YDRCR is an advanced PWM controller that is designed for DC to DC switching regulator applications. It offers a wide range of features such as wide input range, low quiescent current, temperature-compensated reference, and adjustable current limit, making it an ideal solution for high-performance systems.

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