Li ion charge
About the Li ion charge PCB
Li ion charge is an open source PCB design by rmemory, published on GitHub. It is a 2-layer board measuring 31.9 × 25.9 mm, with 18 components from 11 distinct parts.
Other key parts include the MCP73834-FCI/UN. By type, the board carries 9 resistors, 3 connectors, 3 diodes, 2 capacitors and 1 IC.
From the project
Single cell lithumium ion charging circuit
This repo contains the schematic and PCB layout for a battery charge controller board.
The intent of this board is to provide a simple controller to connect a USB port to a discrete single cell recharagable Lithum Ion battery. The USB port will be used to provide power input only (~4.5v), and consequently the USB data port will not be used. This board will also be capable of providing power to a CPU board (3.3V).
Main components on the Li ion charge
Li ion charge bill of materials (BOM)
18 components, 11 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | MCP73834-FCI/UN | MSOP-10_3x3mm_Pitch0.5mm | U101 |
| 1 | 10118193-0001LF USB_B | USB_Micro-B_10118193-0001LF | P101 |
| 2 | M20-9990246 CONN_01X02 | Pin_Header_Straight_1x02_Pitch2.54mm | P102, P103 |
| 1 | NOPOP | LED_0805 | D101 |
| 2 | LTST-S220GKT LED | LED_0805 | D102, D103 |
| 2 | LMK316B7475KL-T 4.7u | C_1206_HandSoldering | C101, C102 |
| 2 | RMCF0805JT470R 470 | R_0805_HandSoldering | R101, R102 |
| 4 | NOPOP | R_0805_HandSoldering | R103, R107, R108, R109 |
| 1 | RC0805JR-071KL 1k | R_0805_HandSoldering | R104 |
| 1 | RC0805JR-0710KL 10k | R_0805_HandSoldering | R105 |
| 1 | ERJ-6ENF2001V 2k | R_0805_HandSoldering | R106 |
Li ion charge design files
The KiCad project lives in the rmemory/li_ion_charge repository on GitHub; these links point at the commit this page was built from.
Li ion charge: common questions
How big is the Li ion charge PCB?
The Li ion charge measures 31.9 × 25.9 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Li ion charge?
18 components, from 11 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the Li ion charge design files?
From the rmemory/li_ion_charge repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the Li ion charge design in my own project?
The repository has no license, so all rights stay with rmemory. Use it as a reference, and ask the author before reusing the design.