Vishay Siliconix SiC450, SiC451, SiC453 is a 40 A/25 A/15 A synchronous buck regulator with PMBus 1.3 compatibility, integrated MOSFETs, a 5 mm x 7 mm thermally efficient package, 0.3 V to 12 V digitally adjustable output voltage, 4.5 V to 20 V input voltage, up to 1.5 MHz switching frequency. It is suitable for a variety of applications, including computing, consumer electronics, telecom, and industrial.
This document provides detailed information on the SiC450, SiC451, and SiC453 synchronous buck regulators, including their features, specifications, and application guidelines. It covers connection points, signal descriptions, power-up procedures, and PCB layout for evaluation boards. The regulators support output currents of 40A, 25A, and 15A respectively, with adjustable output voltage from 0.3V to 12V. The document also includes schematics, bill of materials, and component details for reference design and development.
| Input Voltage Range | 4.5 V to 20 V |
|---|---|
| Output Current | 40 A (SiC450), 25 A (SiC451), 15 A (SiC453) |
| Output Voltage Range | 0.3 V to 12 V |
| Output Voltage Accuracy | 1% over temperature, 0.5% at 3.3V/1.8V at 25°C |
| Switching Frequency | Up to 1.5 MHz |
| Efficiency | 98% peak efficiency |
| Package | Lead (Pb)-free power enhanced MLP 5 mm x 7 mm |
The output voltage is adjustable from 0.3 V to 12 V.
The peak efficiency is 98%.
They are available in a 5 mm x 7 mm thermally efficient package.
They are suitable for servers, networking, telecom, storage, ultrabooks, notebooks, desktops, and DDR memory applications.