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STD Nano2 - dc-dc v2
License: CC-BY-NC-SA 3.0
Mode: Editors' pick
Cloned from Nano2 - dc-dc v2
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Update time：
2021-04-02 13:29:16
Creation time：
2021-01-06 10:49:49
Description
This board mounts onto the battery board which mounts onto the cap board (also named power board) and controls the charge of the capacitors when powered from USB or a single 18650.
Design Drawing
schematic diagram
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| ID | Name | Designator | Footprint | Quantity | BOM_Supplier |
|---|---|---|---|---|---|
| 1 | 200K | R9,R10 | R0402 | 2 | LCSC |
| 2 | 76.8K | R14 | R0402 | 1 | LCSC |
| 3 | 100K | R17,R13,R18 | R0402 | 3 | LCSC |
| 4 | 210-91-02GB01 | H1,H2,H3 | HDR-TH_2P-P2.54-V | 3 | LCSC |
| 5 | 0.005 | R8 | R1206 | 1 | LCSC |
| 6 | 10K | R20 | R0402 | 1 | LCSC |
| 7 | 1K | R15,R19 | R0402 | 2 | LCSC |
| 8 | 1.8uH | L1 | IND-SMD_L9.5-W8.5 | 1 | Digi-Key |
| 9 | C27014 | R11 | R0402 | 1 | LCSC |
| 10 | 24K | R16 | R0402 | 1 | LCSC |
| 11 | 4.7uF | C9 | C0402 | 1 | LCSC |
| 12 | TPS61089 | U11 | VQFN-TPS61089 | 1 | LCSC |
| 13 | LMV431AIM5X/NOPB | U2 | SOT-23-5_L3.0-W1.7-P0.95-LS2.8-BR | 1 | LCSC |
| 14 | SS54F_C108841 | D1 | SMAF_L3.5-W2.6-LS4.7-RD | 1 | LCSC |
| 15 | BAT54T1G | D8 | SOD-123_L2.8-W1.8-LS3.7-RD | 1 | LCSC |
| 16 | 17.4K | R2 | R0402 | 1 | LCSC |
| 17 | LMC7101BYM5-TR | U1 | SOT-23-5_L3.0-W1.7-P0.95-LS2.8-BL | 1 | LCSC |
| 18 | 4.7nF | C14 | C0402 | 1 | LCSC |
| 19 | 0 | R4,R6,R1,R3,R7 | R0402 | 5 | LCSC |
| 20 | C17168 | R5,R22 | R0402 | 2 | LCSC |
| 21 | C17477 | R21 | R0805 | 1 | LCSC |
| 22 | 100nF | C8,C13,C15,C1 | C0402 | 4 | LCSC |
| 23 | 4.7pF | C2 | C0402 | 1 | LCSC |
| 24 | ESD5621W-2/TR | D2 | SOD-323_L1.8-W1.3-LS2.5-RD | 1 | LCSC |
| 25 | 22uF | C10,C11,C12,C3,C4,C5,C6,C7,C20,C21,C16 | C0603 | 11 | LCSC |
| 26 | 237K | R12 | R0402 | 1 | LCSC |
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