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LTC3875-Slide3

The LTC3875 operates over an input voltage range of 4.5V to 38V and produces a fixed output voltage from 0.6V to 3.5V, with ±0.5% accuracy from -40°C to 125°C. Dual onboard differential amplifiers provide true remote output voltage sensing of both output voltages. Up to twelve phases can be paralleled and clocked out-of-phase to minimize input and output filtering. When both outputs are paralleled, the LTC3875 maintains less than ±5% current mismatch between phases for multiphase single output requirements. This makes it ideal for very high current requirements, up to 360A. DCR temperature compensation limits the maximum output current precisely over temperature. The LTC3875 has a selectable fixed operating frequency, from 250kHz to 720kHz, or it can be synchronized to an external clock. Powerful 1.1 Ω onboard N-channel gate drivers minimize MOSFET switching losses. The LTC3875 is available in a 40-lead, 6mm x 6mm QFN package.

PTM Published on: 2014-05-16