CX8507-05- 5V4.2A车载充方案

                                                     整体方案描述：

                                                   1.DC输入范围1.8—32Vdc

                                                   2.DC输出5V,4.2A

                                                   3. 效率>85%

                                                   4.满足＂EPA_2.0＂能效要求

                                                   5.最大纹波＜80Mvp-p

                                                                 图1.Demo实物图

                                           特点

•                                 可调输出电压范围：+0.7V to +5.5V
•                                基准电压0.7V
•                                温度精度±1%
•                                输入电压范围为+1.8V to +32V工作
•                                VCC电压范围-0.3-7V
•                               上电复位监控VCC脚
•                               良好的线路和负载瞬态响应
•                               PFM模式提高轻负载效率
•                               可选择的PWM模式
•                               集成MOSFET驱动器
•                               TDFN‐10 3x3封装

          一、规格与参数

                请参考典型应用电路。这些规范适用于VVCC=12V，TA = -40°C到85°C，除非另有说明。典型值是在TA = 25°

                                                                          图2 应用原理图

                 2.2  Demo板结构示意图

      2.3  Demo板印制图

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