LT3752MPFE#TRPBF

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The LT3752MPFE#TRPBF is a type of DC to DC switching controller from Linear Technology that is specifically geared towards applications that require a high output current, fast transient response, and excellent regulation. The product is specified for an operating temperature range of -40˚C to +125˚C and is offered in a “six-pin” PowerSSO™ package.

The LT3752MPFE#TRPBF consists of three key building blocks - a high voltage PWM controller, an internal synchronous MOSFET gate driver, and an on-board 5V linear regulator. The controller is designed to regulate the voltage and power output of the power supply to match the load current requirements. The voltage regulation is achieved through an on-chip feedback loop and a frequency modulation scheme that adjusts the output voltage by alternating the duty cycle of the MOSFET output.

The LT3752MPFE#TRPBF is capable of driving a synchronous rectifier MOSFET or two isolated drivers for controlling a full bridge rectifier. It is able to supply up to 3A output current with a minimum dropout voltage of 0.2V. In addition, the controller features a built-in soft start circuitry that can be adjusted to deliver a fast transient response under light load conditions.

In order to ensure robust system operation in a noisy environment, the LT3752MPFE#TRPBF provides internal current-mode control loops with adjustable overcurrent threshold, adjustable voltage slope compensation and adjustable soft-start. To reduce switching noise and allow higher margins of system noise immunity, the switching frequency of the controller can be adjusted in the range of 0.25MHz to 1MHz. Additionally, the device features an adjustable soft shut-down mode that allows the controller to automatically switch off when the load drops below a certain threshold.

The LT3752MPFE#TRPBF is suitable for a wide range of applications including automotive power supplies, telecom power supplies and general power supply applications where high output current and fast transient response are required. It is easily paired with an external rectifier to provide a complete power conversion solution with excellent load and line regulation.

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