4 layers103.5 × 48.3 mm
ButtonBd2
frc971/electrical
This repo contains the electrical files for the 971 FRC team. The files include PCBs and the electrical system diagrams. The PCBs are created using KiCad.
165 parts3Apache-2.0
4 layers50.8 × 58.4 mm
Led ring driver
frc971/electrical3This repo contains the electrical files for the 971 FRC team. The files include PCBs and the electrical system diagrams. The PCBs are created using KiCad.
- Size
- 50.8 × 58.4 mm
- Copper layers
- 4
- Thickness
- 1.61 mm
- Parts
- 105
- Nets
- 67
- Pads
- 268
- Tracks, vias
- 680, 99
- Pours
- 32
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 22 Dec 2023
- Updated
- 6 Nov 2026
Overview
Led ring driver is an open-source printed circuit board by frc971, from the frc971/electrical repository on GitHub, published under the Apache-2.0 licence. It is a 4-layer board of 50.8 × 58.4 mm with 105 parts on 67 nets, routed with 680 tracks and 99 vias.
It is built around the TLV272QDRG4Q1, MIC2196YM and TL751L05CD, with the MMBT4401 among its other parts. Its parts include 39 resistors, 23 diodes, 20 capacitors, 11 transistors and 6 ICs.
Main components
4
TLV272QDRG4Q1
SOIC-8-40℃~+125℃ -8V~-1.35V、1.35V~8V 1pA 1pA 2 2.4V/us 2.7V~16V 2uV/℃ 39nV/√Hz@1kHz 3MHz 500uV 550uA 7mA 80dB Rail-to-rail output SOIC-8 Operational Amplifier ROHSTexas InstrumentsOperational AmplifierMIC2196YM
SOIC-8-40℃~+125℃@(TJ) 1 2.9V~14V 400kHz Buck Buck External Yes SOIC-8 DC-DC Converters ROHSMicrochip TechnologyDC-DC ConvertersTL751L05CD
SOIC-80℃~+125℃@(Tj) 1 12uV 150mA 26V 500uA 5V 600mV@(150mA) 65dB@(120Hz) Fixed Over Current Protection、Over Voltage Protection、Enable Positive SOIC-8 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTexas InstrumentsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
MMBT4401
SOT-23-55℃~+150℃ 1 NPN 100nA 250MHz 350mW 400mV 40V 600mA 6V 80 NPN SOT-23 Bipolar (BJT) ROHSDiodes IncorporatedBipolar (BJT)
README
README.mdThis repo contains the electrical files for the 971 FRC team. The files include PCBs and the electrical system diagrams. The PCBs are created using KiCad.
Parts
105| Qty | Value | Footprint | References |
|---|---|---|---|
| 16 | GREEN | LED_SMD:LED_PLCC_2835 | D3, D4, D5, D6, D7, D8, D9, D10, D11, D12, D13, D14, D15, D16, D17, D18 |
| 14 | 1.0k | Resistor_SMD:R_0805_2012Metric | R4, R8, R9, R10, R11, R12, R13, R15, R18, R23, R24, R25, R27, R38 |
| 8 | 1.00k | Resistor_SMD:R_0805_2012Metric | R1, R6, R7, R14, R19, R29, R30, R36 |
| 8 | 10uF | Capacitor_SMD:C_1206_3216Metric | C2, C3, C14, C16, C17, C18, C19, C20 |
| 8 | MMBT4401 | Package_TO_SOT_SMD:SOT-23 | Q2, Q4, Q5, Q6, Q8, Q9, Q10, Q11 |
| 5 | 0.1uF | Capacitor_SMD:C_0805_2012Metric | C6, C7, C8, C9, C10 |
| 4 | 10.0R | Resistor_SMD:R_0805_2012Metric | R22, R28, R31, R32 |
| 4 | MountingHole_3.2mm_M3 | MountingHole:MountingHole_3.2mm_M3 | , , , |
| 4 | TLV272QDRG4Q1 | Package_SO:SO-8_3.9x4.9mm_P1.27mm | U2, U3, U4, U5 |
| 3 | 1.0uF | Capacitor_SMD:C_0805_2012Metric | C12, C13, C15 |
| 3 | 100k | Resistor_SMD:R_0805_2012Metric | R17, R20, R21 |
| 3 | 10k | Resistor_SMD:R_0805_2012Metric | R26, R33, R35 |
| 2 | 470pF | Capacitor_SMD:C_0805_2012Metric | C4, C11 |
| 2 | CDBW0520L-G | Diode_SMD:D_SOD-123 | D22, D23 |
| 1 | 10.0k | Resistor_SMD:R_0805_2012Metric | R39 |
| 1 | 100R | Resistor_SMD:R_0805_2012Metric | R37 |
| 1 | 12V | Diode_SMD:D_SMB | D2 |
| 1 | 270uF 25V | led-ring-driver:CAPPRD500W60D1000H950 | C1 |
| 1 | 2N7002 | Package_TO_SOT_SMD:SOT-23 | Q7 |
| 1 | 30.0k | Resistor_SMD:R_0805_2012Metric | R3 |
| 1 | 30k | Resistor_SMD:R_0805_2012Metric | R5 |
| 1 | 430450601 | led-ring-driver:430450601 | J1 |
| 1 | 6.8uH | led-ring-driver:SRP3020C-1R0M | L1 |
| 1 | 9.09k | Resistor_SMD:R_0805_2012Metric | R16 |
| 1 | 909R | Resistor_SMD:R_0805_2012Metric | R34 |
| 1 | 90m | Resistor_SMD:R_1206_3216Metric | R2 |
| 1 | B330-13-F | Diode_SMD:D_SMC | D1 |
| 1 | DIS | LED_SMD:LED_1206_3216Metric | D20 |
| 1 | DNI | Capacitor_SMD:C_0805_2012Metric | C5 |
| 1 | MIC2196YM | Package_SO:SO-8_3.9x4.9mm_P1.27mm | U1 |
| 1 | PWM | LED_SMD:LED_1206_3216Metric | D19 |
| 1 | PWR | LED_SMD:LED_1206_3216Metric | D21 |
| 1 | SI4116DY-T1-GE3 | Package_SO:SO-8_3.9x4.9mm_P1.27mm | Q1 |
| 1 | SI4143DY-T1-GE3 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | Q3 |
| 1 | TL751L05CD | Package_SO:SO-8_3.9x4.9mm_P1.27mm | U6 |
Questions
How big is the Led ring driver PCB?
It measures 50.8 × 58.4 mm and has 4 copper layers, 1.61 mm thick.
What parts does the Led ring driver use?
105 parts, built around the TLV272QDRG4Q1, MIC2196YM, TL751L05CD and MMBT4401. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Led ring driver KiCad files?
From the frc971/electrical repository on GitHub, at the commit this page was made from: the board is circuit-boards/led-ring-driver/kicad/led-ring-driver.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Led ring driver design in my own project?
Its repository publishes it under the Apache-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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