HardLabs

LVC

TKontu·ltc4368-2s-protector·DC2418-LVC-variant/LVC.kicad_pcb

LVC PCB layout, top view — open source board by TKontu

About the LVC PCB

LVC is an open source PCB design by TKontu, published on GitHub under the CERN-OHL-S-2.0 license. It is a 2-layer board measuring 61.2 × 34.1 mm, with 23 components from 18 distinct parts.

Other key parts include the C688384. By type, the board carries 9 capacitors, 7 resistors, 2 transistors and 1 IC.

It belongs with the power & battery designs in this gallery.

From the project

An inline protection board for replacing 2S NiMH/NiCd packs with 2S LiPo/LiHV, built around the Analog Devices LTC4368-1. NiMH tolerates being run flat; LiPo/LiHV does not. This board adds the low-voltage cutoff those older packs never needed, plus reverse-battery and bidirection

An inline protection board for replacing 2S NiMH/NiCd packs with 2S LiPo/LiHV, built around the Analog Devices LTC4368-1. NiMH tolerates being run flat; LiPo/LiHV does not. This board adds the low-voltage cutoff those older packs never needed, plus reverse-battery and bidirectional overcurrent protection, between the battery and the existing load.

Pack-total sensing on the two main leads only — cell balancing is handled by the charger via the balance lead. Adapted from the ADI DC2418A demo board, rescaled from 24 V / 10 A to a 2S (6.0–8.7 V) pack.

LVC, from the project README
From the project README

Main components on the LVC

C688384

LVC bill of materials (BOM)

23 components, 18 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
C688384
LTC4368IMS-1_PBF
ADI
U1
2
SIR870ADP-T1-GE3
Q2, Q3
4
KEYSTONE_8831
MH3, MH4, MH5, MH6
1
47 uF
TBD
C1
1
C22877898
4.7 uF
TDK
C2
1
C344195
OPT
CCTC
C5
1
C381466
4.7 uF
PSA
C6
1
C54157527
4.7 uF
TORCH
C7
2
OPT
C9, C10
1
C577233
3.3 nF
YAGEO
C11
1
C282823
1 uF
CCTC
C15
1
C4219180
1.18 M
VISHAY
R1
1
C2930117
56.2 k
FOJAN
R2
1
C14675
100 k
YAGEO
R3
1
C51934143
1.2 m
JIERR
R4
1
DNP
R5
1
C2778857
649 k
UNI-ROYAL
R7
1
C2907456
22 k
FOJAN
R13

LVC design files

The KiCad project lives in the TKontu/ltc4368-2s-protector repository on GitHub; these links point at the commit this page was built from.

LVC: common questions

How big is the LVC PCB?

The LVC measures 61.2 × 34.1 mm, has 2 copper layers and is 1.600198 mm thick.

How many components are on the LVC?

23 components, from 18 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 LVC design files?

From the TKontu/ltc4368-2s-protector repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the LVC design in my own project?

Yes, under the terms of its CERN-OHL-S-2.0 license, which TKontu chose for the repository.

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