Rohm BD86852MUF-C汽车照相机电源管理方案(PMIC)
Rohm公司的BD86852MUF-C是具有初级降压转换器(DC/DC1)和次级降压转换器(DC/DC2和DC/DC3),外接线性稳压器控制区块和用于CMOS传感器和图像检测电源的加电重置功能.器件采用小型最适用于照相机模块的VQFN24FV4040封装.此外,器件还有可编程开关扩展频谱的引脚,以降低成噪音输出.器件满足AEC-Q100规范,DC/DC转换器内置了FET,具有高效率的同步整流. BD86852MUF-C的电源电压4.0V到18V,最大值为20V,输出电压VO1为3.3 V或3.9 V (±2 %), VO2为1.1 V 或1.2 V (±2 %), VO3为1.8 V (±2 %);输出电流VO1为 2 A (最大), VO2为1 A (最大), VO3为1 (最大).器件开关频率为2.2 MHz (±200 kHz),典型待机电流为0 μA,工作环境温度为-40 C 到 +125 C.主要用在汽车ADAS,采用CMOS传感器的照相机系统.本文介绍了BD86852MUF-C主要特性和主要指标,框图,DC/DC1框图和DC/DC2和DC/DC3框图(i=2,3),多种应用电路以及评估板BD86852-TSB-001主要特性,电路图,材料清单和PCB设计图.
BD86852MUF-C is a power management IC with primarybuck converter (DC/DC1), secondary buck converters(DC/DC2 and DC/DC3), external linear regulator control
block and the power-on reset function for CMOS sensorand image sensing power supply. Output voltage andsequence are selectable and applicable to various imagesensor power supply.
This device adopts small package VQFN24FV4040 whichis optimal for camera module. In addition, this device hasa pin that can be programmed to turn on/off the spreadspectrum providing a lower noise regulated outputs.
BD86852MUF-C主要特性:
n AEC-Q100 Qualified
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