5v-3.3v DC/DC转换电路方案
2018-04-28 本文已影响38人
剑山
arduino UNO上用的是lp2985-33dbvr,但这个芯片有个问题是只能输出150mA的电流
![](https://img.haomeiwen.com/i781388/3946ea535be85e62.png)
但是有点奇怪TI官方的电路图和这个不太一样
![](https://img.haomeiwen.com/i781388/a937f8b2ca75828b.png)
然后是看到eBay上有人买的模块用的是AMS1117,可以输出800mA
![](https://img.haomeiwen.com/i781388/50dadda9a8ab1f85.png)
github上的一个esp8266的板子
https://github.com/skorokithakis/tiny-ESP8266-breakout
![](https://img.haomeiwen.com/i781388/af93faa36ed984b1.png)
wifiduino
https://wifiduino.com/esp8266/
![](https://img.haomeiwen.com/i781388/ed5209795a1c3fed.png)
sparkfun和Adafruit的esp8266都用了这个芯片
https://www.sparkfun.com/products/13231
https://www.adafruit.com/product/2471
![](https://img.haomeiwen.com/i781388/35845056fa0399c5.png)
![](https://img.haomeiwen.com/i781388/0e62d37d533f6ace.png)