The ISL78083 is a versatile multi-rail power IC comprised of a primary high voltage synchronous buck regulator, two secondary low voltage synchronous buck regulators, and an LDO regulator. It also offers four overvoltage and undervoltage monitors, three power-good indicators, and a reset output/fault indicator. To limit common-cause failures, the ISL78083 also includes a second reference for the OV/UV monitors, independent from the reference of the regulators. The ISL78083 is intended for high-density power applications, requiring few external components and minimal board space. It offers an extensive feature set configured using internal One-Time Programmable (OTP) memory. Nearly all device options, such as each output voltage selection, power sequencing, and OV/UV thresholds are internally configured and require no external components for selection. The regulators also offer internal compensation. The bucks are synchronous to achieve high efficiency and are capable of operating in harsh environments requiring high ambient temperature. ISL78083 is available in a 4mmx4mm 24 Ld Step Cut QFN (SCQFN) package with an exposed pad for improved thermal performance. It is AEC-Q100 qualified to Grade 1 and operates across an ambient temperature range of -40°C to 125°C and is electrically specified across a junction temperature range of -40°C to 150°C.
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.