License

Public Domain

Recommend Projects

BUCK TO-220 Replacement

6 months ago 411
  • Description
  • Documents
  • BOM
  • Attachments
  • Members
  • Comments

Description

This is a reverse engineering of the DD4012SA 5v buck regulator for replacing LM7805 TO-220 regulators.

ME3116 is the IC, https://datasheet.lcsc.com/szlcsc/Nanjing-Micro-One-Elec-ME3116_C97643.pdf

R2 = 2K for all Voltages

3.3V R1 = 6.34k

5V R1 = 10.7K

12V R1 = 28.7k

To Calculate other output voltages: Vout = Vfb(1+(R1/R2))

Vfb = 0.8v

R2 = 2000

Documents

BUCK_TO-220_SCH

BUCK_TO-220_PCB

BOM

ID Name Designator Footprint Quantity
1 10.7k R1 0805 1
2 2k R2 0805 1
3 1.2m R3 0805 1
4 0.47uF C3 0805 1
5 10uF CI,CBOOST,CO 0805 3
6 10uH L1 SM5845 1
7 P1 P1 HDR-3X1/2.54 1
8 ME3116 U1 SOT23-6 1
9 SS34-E3/57T D1 SMC(DO-214AB) 1
10 OSHW-LOGOS LOGO1 OSHW-LOGO-S 1

Attachments

Filename Download
1A-65-5-40V-to-5V-DC-DC-Step-Down-Buck.jpg

Members

Success
The owner does not allow comments in this project now

Comments (0)

goToTop
你现在访问的是EasyEDA海外版,使用建立访问速度更快的国内版 https://lceda.cn(需要重新注册)
如果需要转移工程请在个人中心 - 工程 - 工程高级设置 - 下载工程,下载后在https://lceda.cn/editor 打开保存即可。
有问题联系QQ 3001956291 不再提醒
svg-battery svg-battery-wifi svg-books svg-more svg-paste svg-pencil svg-plant svg-ruler svg-share svg-user svg-logo-cn svg-double-arrow
We use cookies to offer you a better experience. Detailed information on the use of cookies on this website is provided in our Privacy Policy. By using this site, you consent to the use of our cookies.