LTC7851EUHH#PBF

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The LTC7851EUHH#PBF, also known as DC-DC switching controller, is a device typically used for controlling DC-DC converters. It is a Pulse Width Modulator (PWM) switch mode power supply (SMPS) controller with high-frequency fixed frequency, peak current mode control. This device is generally used for low-side switch-mode power conversion applications, and is optimized for low power losses and low emissions. It is preferentially used for DC-DC conversion within the automotive, medical, industrial and consumer electronics equipment.

The working principle of the LTC7851EUHH#PBF is based on high-frequency fixed-frequency, current mode PWM control. This device can be controlled in one of two ways: a Bus Voltage Feedback or a Current Loop Feedback. For the Bus Voltage Feedback, the controller acts as a voltage comparator and the input voltage is regulated to the bus voltage set point. On the other hand, for the current loop control, the outputs of the device are regulated to a specific reference current instead. This current information can be feedback when the VOUT reaches a certain predetermined level.

The LTC7851EUHH#PBF has several built-in functions that make it suitable for a variety of applications. It includes an advanced soft-start, adjustable slope compensation, hiccup mode, pulse-by-pulse current limit and overload protection. Moreover, this device has an adjustable maximum duty cycle which prevents any overload when the duty cycle gets beyond the desired level. These features make this device ideal for energy-efficient applications such as automotive, medical, and industrial systems.

Apart from its features, the LTC7851EUHH#PBF also offers a wide operating range. It can operate from a supply voltage of 6V to 52V, and its operating temperature range is from -40°C to +125°C. This wide range of operation makes the device suitable for applications like DC-DC buck and boost converter, polarity inversion, DC-DC controller, and isolated asynchronous buck-boost converter.

In conclusion, the LTC7851EUHH#PBF is an advanced and efficient DC-DC switching controller which is suitable for many applications due to its wide operating range, features and performance. It is used to generate regulated voltages in buck and boost converters, polarity inverters and isolated asynchronous buck-boost converters. The device is well suited for low power losses and low emissions, making it a suitable choice for applications within the automotive, medical, industrial, and consumer electronics equipment.

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