Overview

Product Details

Demonstration Circuit 3186A features the LTC3311 12.5A, low voltage synchronous step-down Silent Switcher® operating as a multiphase 2MHz, 3V to 5.5V input, 1.2V buck regulator. The DC3186A has three build options to provide a two phase 25A, three phase 37.5A, or four phase 50A output solution. The LTC3311 supports adjustable output voltages from 0.5V to VIN and operating frequencies from 500kHz up to 5MHz in multiphase operation. All phases of DC3186A operate in forced continuous mode.

The DC3186A also has an EMI filter to reduce conducted EMI. This EMI filter can be included by applying the input voltage at the VIN EMI terminal.

The Efficiency vs Load graph shows the efficiency of the circuit with a 3.3V input for all three build options.

An on-board transient circuit is included to measure fast transient performance.

The LTC3311 data sheet gives a complete description of the part, its operation, and application information. The data sheet must be read in conjunction with the demo manual. The LTC3311 is assembled in a 3mm × 3mm LQFN package with exposed pads for low thermal resistance.

Applicable Parts

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Pricing displayed is based on 1-piece.

Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.