LTC3856IUH#PBF

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The LTC3856IUH#PBF is an advanced high performance synchronous 4-phase PWM DC/DC controller. With its patented Silent Switcher technology, the product provides excellent efficiency and very low noise operation for its class of DC/DC controllers. The product is designed for robust operation with output voltages up to 15V with 4-phase operation. This advanced controller features automatic PWM switching frequency dithering to reduce EMI and cycle-by-cycle current limit for load protection. It also includes an adjustable soft-start feature and an onboard push-pull power switch driver, allowing the controller to be used in a wide array of applications.

The LTC3856IUH#PBF is ideally suited for a variety of power management applications including point-of-load, POL, DC/DC converters, digital isolators, medical, IR drop and thermal management solutions. The device operates in either 4-phase buck, forced continuous synchronization buck or 3-phase buck mode. The controller is fabricated in a 40-pin MSOP package.

The LTC3856IUH#PBF is designed for high performance power conversion applications. With its built-in voltage and current regulation, the controller allows the system designer to operate in a wide range of input and output conditions with excellent power regulation that is always within the specified limits. This device features cycle-by-cycle peak current limit, programmable soft-start, adjustable output voltage and current positive swing, small-signal bandwidth, load regulation, and output ripple. This controller also has extended tracking and synchronization capability and supports a wide range of output type switches.

The unique Silent Switcher technology of the LTC3856IUH#PBF is optimized for low noise operation and provides excellent efficiencies. The device is designed to minimize losses in switching and diode conduction as a common method of increasing power conversion efficiency. Traditionally, switching devices and diodes have been the primary contributors of switching and conduction losses. The LTC3856IUH#PBF provides an effective solution for reducing these losses by minimizing switching transitions and reducing conduction losses. This ensures the highest possible efficiency over the full operating range.

The LTC3856IUH#PBF also features an onboard PWM switch driver. This added feature allows the controller to drive power MOSFETs directly, eliminating the need for external drivers and reducing system complexity. The PWM switch driver is capable of driving either a synchronous or asynchronous switch such as a single or dual N-channel MOSFET in either buck or boost mode.

The LTC3856IUH#PBF is a high performance, high efficiency DC/DC controller designed for a variety of power management applications. It provides an excellent solution for reducing conduction losses as well as for reducing system complexity with its patented Silent Switcher technology and onboard PWM switch driver. The device is fabricated in a 40-pin MSOP package and is ideally suited for a variety of point-of-load, POL, DC/DC converters, digital isolators, medical, IR drop and thermal management solutions.

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