LTC3 Charge Controller
LTC3 Charge Controller is an open source PCB design by psas: a 4-layer, 103.5 × 85 mm board with 110 components (69 distinct parts). It is built around the PI2127, LT8490, LTC2990, 4N25.
CAD files and software for the launch tower computer (LTC)
This subdirectory contains everything related to the third generation launch tower computer (LTC3), with the exception of the userspace software, which is contained in the [launch-tower-comm][1] repo.
[1]: https://github.com/psas/launch-tower-comm
For a quick introduction to the project, read the [Requirements doc][2] at ./doc/requirements/LTC3RequirementsSpec.adoc
Built around
Parts list
110 components, 69 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | PI2127 | LGA-17 | U1, U2 |
| 1 | LT8490 | LT8490 | U3 |
| 1 | LTC2990 | MSOP-10 | U4 |
| 1 | 4N25 | DIP-6_W7.62mm | U5 |
| 1 | ZVN4525E6 | SOT-26 | Q1 |
| 4 | BSC028N06NS | SO-8 | Q2, Q3, Q4, Q5 |
| 1 | ZVP3310F | SOT-23 | Q6 |
| 1 | MMBT5550L | SOT-23 | Q7 |
| 1 | CONN_01X08 | Molex_Microfit3_Header_02x04_Straight_43045-0828 | P1 |
| 1 | Molex MicroFit | Molex_Microfit3_Header_02x02_Straight_43045-0428 | P2 |
| 1 | XH header | JST_XH_B02B-XH-A_02x2.50mm_Straight | P3 |
| 1 | XH header | JST_EH_B02B-EH-A_02x2.50mm_Straight | P5 |
| 1 | XH header | JST_EH_B04B-EH-A_04x2.50mm_Straight | P6 |
| 1 | 15A | Fuseholder_Auto_Blade_Regular_Keystone_3557-2 | F1 |
| 2 | CMMR1U-02 | SOD-123 | D1, D2 |
| 1 | GREEN | LED_1206 | D3 |
| 1 | RED | LED_1206 | D4 |
| 1 | BZT52C13 | SOD-123 | D5 |
| 1 | 10uH | Coilcraft_SER2900 | L1 |
| 1 | 0.33μ | C_0805 | C1 |
Show 49 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 3 | 33μ | c_elec_10x10 | C2, C4, C5 |
| 5 | 0.1μ | C_0805 | C3, C26, C31, C34, C37 |
| 3 | 4.7μ | C_0805 | C6, C7, C24 |
| 2 | 0.01μ | C_0805 | C8, C10 |
| 6 | 2.2μ | C_1210 | C9, C11, C12, C14, C20, C21 |
| 2 | 220n | C_0805 | C13, C15 |
| 1 | 8.2n | C_0805 | C16 |
| 1 | 220p | C_0805 | C17 |
| 2 | 470n | C_0805 | C18, C32 |
| 1 | 68n | C_0805 | C19 |
| 2 | 0.001μ | C_0805 | C22, C23 |
| 2 | 1μ | C_0805 | C25, C30 |
| 1 | 0.18μ | C_0805 | C27 |
| 2 | 4.7μ | C_2220 | C28, C29 |
| 2 | 10μ | c_elec_6.3x7.7 | C33, C35 |
| 1 | 150μ | C_Radial_D12.5_L25_P5 | C36 |
| 1 | 110k | R_0805 | R1 |
| 1 | 35.7k | R_0805 | R2 |
| 3 | 10k | R_0805 | R3, R4, R19 |
| 4 | 0 | R_0805 | R5, R6, R48, R49 |
| 1 | 93.1k | R_0805 | R7 |
| 1 | 7.68k | R_0805 | R8 |
| 1 | 196k | R_0805 | R9 |
| 1 | 8.06k | R_0805 | R10 |
| 1 | 16.5k | R_0805 | R11 |
| 2 | 3.32k | R_0805 | R12, R27 |
| 1 | 215k | R_0805 | R13 |
| 1 | 21k | R_0805 | R14 |
| 3 | 0 | R_0603 | R15, R25, R34 |
| 1 | 25.5k | R_0805 | R16 |
| 1 | 3.01k | R_0805 | R17 |
| 1 | 243k | R_0805 | R18 |
| 2 | 10m | R_1206 | R20, R38 |
| 4 | 10 | R_0805 | R21, R28, R29, R39 |
| 1 | 53.6k | R_0805 | R22 |
| 2 | 549 | R_0805 | R23, R24 |
| 1 | 1.3k | R_0805 | R26 |
| 1 | 200k | R_0805 | R30 |
| 1 | 5m | R_1206 | R31 |
| 2 | 11.5k | R_0805 | R32, R33 |
| 1 | 57.6k | R_0805 | R35 |
| 1 | 294k | R_0805 | R36 |
| 1 | 10.2k | R_0805 | R37 |
| 1 | 100k | R_0805 | R40 |
| 1 | 26.1k | R_0805 | R41 |
| 1 | 60m | R_2512 | R42 |
| 2 | 75k | R_0805 | R43, R45 |
| 2 | 12k | R_0805 | R44, R46 |
| 1 | TBD | R_0805 | R47 |
