Minimal LTC3350
About the Minimal LTC3350 PCB
Minimal LTC3350 is an open source PCB design by ionutms, published on GitHub under the MIT license. It is a 4-layer board measuring 47 × 61.5 mm, with 76 components from 34 distinct parts.
Other key parts include the LTC3350EUHF#PBF. By type, the board carries 34 resistors, 21 capacitors, 9 transistors, 6 connectors, 4 diodes and 1 IC.
From the project
This repository contains a minimal KiCad design project for the Analog Devices LTC3350, a high-current supercapacitor backup controller and system monitor. The project includes schematic designs and PCB layout files for implementing this versatile backup power solution.
This repository contains a minimal KiCad design project for the Analog Devices LTC3350, a high-current supercapacitor backup controller and system monitor. The project includes schematic designs and PCB layout files for implementing this versatile backup power solution.
The LTC3350 from Analog Devices is a high-current supercapacitor backup controller and system monitor designed for high-reliability backup power applications. It integrates a synchronous step-down/step-up controller that charges and monitors a series stack of 1–4 supercapacitors.
Main components on the Minimal LTC3350
Minimal LTC3350 bill of materials (BOM)
76 components, 34 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | LTC3350EUHF#PBF LTC3350EUHF-PBF | QFN-38_UHF_LIT | U1 |
| 4 | SIA436DJ-T1-GE3 8 V Vishay Semiconductors | PowerPAK SC-70 | Q1, Q3, Q6, Q9 |
| 2 | SIS438DN-T1-GE3 20.0 V Vishay Semiconductors | PowerPAK 1212-8 | Q2, Q8 |
| 2 | BSZ060NE2LS 20 V Infineon Technologies | TSDSON-8FL | Q4, Q5 |
| 1 | SI2374DS-T1-BE3 20.0 V Vishay Semiconductors | SOT23 | Q7 |
| 5 | CLP-102-02-G-D-BE Samtec | CLP-102-02-G-D-BE | J1, J2, J3, J4, J5 |
| 1 | TBP02R1-381-02BE Same Sky | TBP02R1-381-02BE | J6 |
| 3 | APHHS1005LSECK/J3-PF 1.8 V Kingbright | LED_RED_0402_1005Metric | D1, D2, D3 |
| 1 | 1N4448HWT-7 80.0 V STMicroelectronics | SOD_523 | D4 |
| 1 | XAL7030-332ME 3.3 µH Coilcraft | XAL7030 | L1 |
| 2 | C3216X5R1E476M160AC 47 µF TDK | C_1206_3216Metric | C1, C2 |
| 3 | C1005X5R1E105K050BC 1 µF TDK | C_0402_1005Metric | C3, C6, C7 |
| 2 | C1005X5R1E225K050BC 2.2 µF TDK | C_0402_1005Metric | C4, C5 |
| 2 | GCM155R71H103KA55D 10 nF Murata Electronics | C_0402_1005Metric | C8, C10 |
| 5 | GCM155R71H104KE02D 100 nF Murata Electronics | C_0402_1005Metric | C9, C11, C13, C16, C17 |
| 1 | GRM188C71A475KE11D 4.7 µF Murata Electronics | C_0603_1608Metric | C12 |
| 1 | C1005X6S1C105K050BC 1 µF TDK | C_0402_1005Metric | C14 |
| 1 | GCM1555C1H121FA16D 120 pF Murata Electronics | C_0402_1005Metric | C15 |
| 4 | C2012X5R1C226M125AC 22 µF TDK | C_0805_2012Metric | C18, C19, C20, C21 |
| 5 | ERJ-6DQF2R7V 2.7 Ω Panasonic | R_0805_2012Metric | R1, R8, R23, R29, R30 |
Show 14 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 8 | RC2512FK-7W2R7L 2.7 Ω Yageo | R_2512_6332Metric | R2, R3, R14, R15, R26, R27, R33, R34 |
| 3 | ERJ-2GE0R00X 0 Ω Panasonic | R_0402_1005Metric | R4, R7, R17 |
| 4 | ERJ-2RKF1003X 100 kΩ Panasonic | R_0402_1005Metric | R5, R6, R16, R20 |
| 1 | ERJ-2RKF7873X 787 kΩ Panasonic | R_0402_1005Metric | R9 |
| 3 | ERJ-2RKF1001X 1 kΩ Panasonic | R_0402_1005Metric | R10, R11, R12 |
| 1 | ERJ-B2CFR016V 16 mΩ Panasonic | R_0612_1632Metric | R13 |
| 1 | ERJ-2RKF1183X 118 kΩ Panasonic | R_0402_1005Metric | R18 |
| 1 | ERJ-2RKF8873X 887 kΩ Panasonic | R_0402_1005Metric | R19 |
| 1 | ERJ-2RKF7152X 71.5 kΩ Panasonic | R_0402_1005Metric | R21 |
| 1 | ERJ-2RKF9090X 909 Ω Panasonic | R_0402_1005Metric | R22 |
| 1 | ERJ-2RKF1004X 1 MΩ Panasonic | R_0402_1005Metric | R24 |
| 1 | RC0402FR-0710ML 10 MΩ Yageo | R_0402_1005Metric | R25 |
| 1 | WFCP06126L000FE66 6 mΩ Vishay | R_0612_1632Metric | R28 |
| 2 | SR2512FK-7W100RL 100 Ω Yageo | R_2512_6332Metric | R31, R32 |
Minimal LTC3350 design files
The KiCad project lives in the ionutms/Minimal_LTC3350 repository on GitHub; these links point at the commit this page was built from.
Minimal LTC3350: common questions
How big is the Minimal LTC3350 PCB?
The Minimal LTC3350 measures 47 × 61.5 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the Minimal LTC3350?
76 components, from 34 distinct parts. The full bill of materials is listed on this page.
Where can I download the Minimal LTC3350 design files?
From the ionutms/Minimal_LTC3350 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Minimal LTC3350 design in my own project?
Yes, under the terms of its MIT license, which ionutms chose for the repository.