一个微型电池充电器5V 800mA设计

电路板图如下：

描述

一个微型电池充电器 5V 800mA

它使用 MCP7386 (U4) 为电池充电，使用 LTC3402EMS (U2) 将电压转换为高达 5V。

我决定将它用于使用树莓派零的小型凸轮记录器。

该连接器提供以下电压：

1：+Vbat，电池正极

2：SW1，外部开关端子，用于将电池与升压转换器分离，从而关闭电源。它连接到与 Vbat 相同的终端。

3：SW2，外部开关的另一端。

4：+5V升压转换器的输出电压

5：地

6：接地

二极管 D1、D2、D5 用于显示电池的状态。

连接器 J4 是一个微型 USB 连接器，用于提供电压和为电池充电。

物料清单如下：

"RefDes","值","模式"

"C19","100nF","CAP_0603"

"C20","470nF","CAP_0603"

"C21","100nF","CAP_0603"

"C22","10uF","CAP_1206"

"C23","100u","CAPAE-5.3x5.3h7"

"C24","100nF","CAP_0603"

"C25","100nF","CAP_0603"

"C27","100u","CAPAE-5.3x5.3h7"

"C28","100nF","CAP_0603"

"D1","","DIO_0603"

"D2","","DIO_0603"

"D3","","SMB"

"D4","","DIO_0603"

"D5","","DIO_0603"

"D6","","SMB"

"D7","","SMB"

"J4","","934"

"J5","","HDR-1x6T/2.54/15x2"

"L1","","SRP7030F"

"Q1","","SOT23"

"R13","6.19k","RES_0603"

"R14","7.3k","RES_0603"

"R15","10k","RES_0603"

"R16","6.19k","RES_0603"

"R23","6.19k","RES_0603"

"R24","2.2k","RES_0603"

"R25","1.19k","RES_0603"

"R26","0R","RES_0603"

"R27","10k","RES_0603"

"R30","10k","RES_0603"

"R31","6.19k","RES_0603"

"R32","6.19k","RES_0603"

"R33","6.19k","RES_0603"

"R34","6.19k","RES_0603"

"TP1","","测试点"

"TP2","","测试点"

"TP3","","测试点"

"U4","","SOJ-16/8.65x1.27"

"U5","","MSOP-10"