LTC3872HTS8-1#TRPBF

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The LTC3872HTS8-1#TRPBF is a high-performance step-up converter designed to generate output voltages as high as 70V from lower input voltage sources. This integrated switch-mode DC/DC regulator is part of the LTC3870/LTC3872 family of monolithic DC/DC regulators. The device is suitable for use in a wide range of applications and is particularly well suited for the most challenging applications where high-efficiency, high-power density, and tight regulation are needed.

The LTC3872HTS8-1#TRPBF consists of an internal synchronous rectifier, an error amplifier, soft-start and synchronization circuitry, as well as all of the necessary logic, current-sense, and power-control circuitry to form a complete step-up DC/DC regulator. The device uses an internal MOSFET switch to generate an output voltage up to 70V from a lower input voltage. This MOSFET operates in a pulse-width modulation (PWM) mode which provides excellent line and load regulation.

In terms of design, the internal synchronous rectifier is implemented to minimize the conduction losses and maximize the efficiency of the converter. The synchronous rectifier consists of an N-Channel MOSFET transistor switch and an integrated low-loss diode that are connected in parallel to form a synchronous rectifier. This results in high efficiency operation as the losses incurred in a conventional rectifier bridge are minimized.

The LTC3872HTS8-1#TRPBF also features an integrated control loop. The device uses an error amplifier that compares the feedback voltage with a predetermined reference voltage and adjusts the duty cycle of the internal switching MOSFET to achieve the desired output voltage. The circuit implements a current-mode control scheme which enables high output voltage accuracy and excellent line and load regulation.

The device is also equipped with integrated soft-start and synchronization circuitry that allow for smooth power-on as well as synchronization to an external oscillator. The synchronized operation helps to reduce the noise in the system and ultimately ensure that the output voltage is always in regulation. Additionally, the device includes short-circuit, over-temperature, and cycle-by-cycle current limit protection features that ensure safe operating conditions and reliable output regulation.

In conclusion, the LTC3872HTS8-1#TRPBF is a highly integrated DC/DC regulator designed for high-efficiency and high-power density applications. The device utilizes an internal synchronous rectifier, error amplifier, and necessary logic, current-sense and power-control circuitry to provide a complete step-up DC/DC regulator solution. The device is suitable for a wide range of applications, and is particularly well suited for those that need high-efficiency, high-power density, and tight regulation.

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