Renesas ISL78083汽车照相机电源管理方案
Renesas公司的ISL78083是汽车照相机电源管理集成电路,具有三个同步降压稳压器和一个低压降线性稳压器.ISL78083是多轨电源器件,包含了一个基本的高压同步降压稳压器,两个低压同步降压稳压器和一个LDO稳压器.器件还提供四个过压和欠压监视器,三个功率良好指示器和重置输出/故障指示器.为了限制共同原因故障,器件还包括用于OV/UV监视器的第二个基准,独立于稳压器的基准.VIN工作电压从4.0V到42V,起动范围从4.5V到42V,固定开关频率2.2MHz.ISL78083采用4mmx4mm 24 Ld Step Cut QFN (SCQFN)封装,满足AEC-Q100规范Grade 1,工作温度-40℃ 到125℃,结温在-40℃ 到150℃.主要用在后视图和环绕视图HD汽车照相机,驾驶员监视照相机和HD行车记录仪.本文介绍了ISL78083主要特性,框图,典型应用电路图和评估板ISL78083DEMO1Z主要特性,主要指标和框图,电路图,材料清单和PCB设计图.
Automotive Camera Power Management IC with Three Synchronous Buck Regulators
and One Low Dropout Linear Regulator
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.
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