FemtoBuck LED Driver (Open hardware) copy

6 months ago 49
  • Description
  • Documents
  • BOM
  • Attachments
  • Members
  • Comments

Description

Description: This is the FemtoBuck, a small-size single-output constant current LED driver. Each FemtoBuck has the capability to dim a single high-power channel of LEDs from 0-350mA at up to 36V while the dimming control can be either accessed via PWM or analog signal from 0-2.5V. This board is based off of the PicoBuck LED Driver, developed in collaboration with Ethan Zonca, except instead of blending three different LEDs on three different channels the FemtoBuck controls just one.

For the FemtoBuck, we’ve increased the voltage ratings on the parts to allow the input voltage to cover the full 36V range of the AL8805 driver. Since the FemtoBuck is a constant current driver, the current drawn from the supply will drop as supply voltage rises. In general, efficiency of the FemtoBuck is around 95%, depending on the input voltage. On board each FemtoBuck you will find two inputs for both power input and dimming control pins and an area to install a 3.5mm screw terminal. Finally at either side of the board you will find small indents or “ears” which will allow you to use a zip tie to secure the wires to the board after soldering them down.

GitHub (Design Files) Sparkfun link:https://www.sparkfun.com/products/12937

enter image description here

Documents

femtobuck sch copy

femtobuck pcb copy

BOM

ID Name Designator Footprint Quantity Manufacturer Part Manufacturer Supplier Supplier Part Price LCSC Assembly Mounted
1 AL8805 U1 SOT23-5 1
2 0.3R R1 0805 1
3 1uF C1 1206 1
4 2.2uF C2 1206 1
5 33uH L1 SRN6045 1
6 M02 CH1 SCREWTERMINAL-3.5MM-2_LOCK 1
7 MBRA140 D1 SMA-DIODE 1
8 OSHW-LOGO LOGO1 OSHW-LOGO-S 1
9 FRAME-LETTER FRAME1 CREATIVE_COMMONS 1
10 M04 JP1 1X04 1
11 SFE_LOGO_NAME_FLAME.1_INCH LOGO2 SFE_LOGO_NAME_FLAME_.1 1
12 M02 JP2 1X02 1
13 FIDUCIAL FID1,FID2 FIDUCIAL-1X2 2

Attachments

None

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.