Demonstration circuit 2290A features the LTC2387 family. With up to 15Msps, these differential input, single channel, 18-/16-Bit, serial, high speed successive approximation register (SAR) ADCs are available in a 32-Pin QFN package. The LTC2387 family has an internal 20ppm/°C reference and a serial LVDS interface. The demo manual refers to the LTC2387 but applies to all members of the family, the only difference being the sample rate and the number of bits. The DC2290A demonstrates the AC performance of the LTC2387 in conjunction with the DC718 data collection board. Differential amplifier demo boards are available separately that provide amplification of low level differential signals if required. Alternatively, by connecting the DC2290A into a customer application the performance of the LTC2387 can be evaluated directly in that circuit.

Demonstration circuit 2317A is a 100V monolithic DC/ DC step-down regulator featuring the LTC7103. The demo board is designed for a 5V/2.3A output from a 5V to 100V input at 400kHz switching frequency. The wide input range makes it suitable for automotive, industrial, medical instrument, and telecom applications. This buck regulator has a peak efficiency of 93.5% at 12VIN, 88.3% at 48VIN and 81.5% at 100VIN.

Demonstration circuit 2337A is an offline isolated flyback converter featuring LT8315. The demo board outputs 12V, and maintains tight regulation with a load current from 4mA to 0.55A. It is optimized to operate over a wide AC input voltage range (90VAC to 265VAC, 47Hz to 63Hz). Output voltage accuracy stays within ±5% over the whole input voltage and load range.

Demonstration circuit 2348A is a high power high efficiency bi-directional synchronous buck or boost converter featuring the LTC3871 and is available in two versions. The DC2348A-A operates with two each LTC3871 devices with four phases and the DC2348A-B utilizes one LTC3871 device with two phases.

Demonstration circuit DC2378A-B features the LTM4650EY-1, the high efficiency, high density, dual 25A, single 50A, switch mode step-down power module regulator. The input voltage is from 4.5V to 15V. The output voltage is programmable from 0.6V to 1.8V. DC2378A-B can deliver 25A maximum current from each channel. As explained in the data sheet, output current derating is necessary for certain VIN, VOUT, and thermal conditions. The board operates in continuous conduction mode in heavy load conditions. For high efficiency at low load currents, the MODE jumper (JP1) selects pulse-skipping mode for noise sensitive applications or Burst Mode® operation in less noise sensitive applications. Two outputs can be connected in parallel for a single 50A output solution with optional jumper resistors. The board allows the user to program how its output ramps up and down through the TRACK/SS pin. The output can be set up to either coincidentally or ratiometrically track with another supply’s output. Remote output voltage sensing is available for improved output voltage regulation at the load point. These features and the availability of the LTM4650EY-1 in a compact 15mm × 15mm × 5.01mm BGA package make it ideal for use in many high density point-of-load regulation applications. The LTM4650-1 data sheet must be read in conjunction with this demo manual for working on or modifying the demo circuit DC2378A-B.

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