Sorry, I don't know. Maybe try the datasheet.
By utilizing the LTC3531-3.3 chip, this board will output 3.3v from an input voltage of anywhere from 1.8v to 5.5v and do so with up to 90% efficiency. This board is designed to plug easily into a 2.54mm pitch breadboard.
Here's the datasheet for the LTC3531-3.3: http://cds.linear.com/docs/en/datasheet/3531fb.pdf
Here's a link to the LTC3531-3.3 part on Digikey: https://www.digikey.com/product-detail/en/linear-technology/LTC3531ES6-3.3-TRMPBF/LTC3531ES6-3.3-TRMPBFCT-ND/4729409
Qty | Value | Device | Package | Parts | Description | MF | MPN | Aliexpress or Ebay link |
---|---|---|---|---|---|---|---|---|
1 | PCB | |||||||
1 | LTC3531-3.3 Boost Converter | |||||||
2 | 1x3 Header pins, 2.54 pitch | |||||||
1 | 2.2uF capacitor 0603 | |||||||
1 | 15uF capacitor 1205 | |||||||
1 | 15uH low DCR inductor |
Name | Size | # Downloads |
---|---|---|
BoardOutline.gbr | 285 B | 466 |
Bottom.gbr | 549 B | 439 |
BottomAssy.gbr | 189 B | 385 |
BottomDimension.gbr | 199 B | 453 |
BottomMask.gbr | 344 B | 412 |
BottomPaste.gbr | 189 B | 451 |
BottomSilk.gbr | 10.53 kB | 453 |
Through.drl | 202 B | 498 |
Top.gbr | 1.69 kB | 494 |
TopAssy.gbr | 243 B | 513 |
TopDimension.gbr | 196 B | 420 |
TopMask.gbr | 653 B | 509 |
TopPaste.gbr | 494 B | 470 |
TopSilk.gbr | 2.6 kB | 485 |
LTC3531 Breakout Board Schematic v010.pdf | 4.88 kB | 458 |
I just now posted Version 9.
Changes from Version 8 are:
Utilizes shielded 15uH inductor (previous was unshielded 10uH). Much larger footprint than previously, but it has a ferrite core, a low DCR, and a high current rating. The LTC3531 is somewhat vague as to the recommended specs for component selection. So, to narrow down the possibilities, I borrowed the recommendations from the LTC3105 datasheet, which says, "Low DCR power inductors with values between 4.7µH and 30µH are suitable for use with the LTC3105. For most applications, a 10µH inductor is recommended. In applications where the input voltage is very low, a larger value inductor can provide higher efficiency and a lower start-up voltage." The inductor I've tentatively picked is: http://www.digikey.com/scripts/DkSearch/dksus.dll?)Detail&itemSeq=213304934&uq=636162799100075858
Utilizes X5R 1208 15uF capacitor (previous was 10uF). According to DS, this should reduce output voltage ripple. http://www.digikey.com/scripts/DkSearch/dksus.dll?Detail&itemSeq=213308469&uq=636162799100085864
BTW, for the input capacitor, I'm picking this: http://www.digikey.com/scripts/DkSearch/dksus.dll?Detail&itemSeq=213328190&uq=636162859327817001
@hek
OK. At least the 3D model is correct. I just added Osh Park renderings as a stopgap until the cache updates for the 2D renderings.