2 layers28 × 25.5 mm
2 layers42 × 32 mm
Digital buck
brightcloudy/pcbSome PCBs, hopefully
- Size
- 42 × 32 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 27
- Nets
- 54
- Pads
- 138
- Tracks, vias
- 246, 52
- Pours
- 6
- Routed
- Yes
- KiCad
- KiCad 4
- Created
- 20 Jun 2015
- Updated
- 2 Dec 2015
Overview
Digital buck is an open-source printed circuit board by brightcloudy, from the brightcloudy/pcb repository on GitHub, published under the MIT licence. It is a 2-layer board of 42 × 32 mm with 27 parts on 54 nets, routed with 246 tracks and 52 vias.
It is built around the STM32F103C8T6, FAN2558S33X and LTC-2621P. Its parts include 14 capacitors, 5 ICs, 4 connectors, 2 resistors and 1 inductor. It belongs with the power boards and the STM32 boards of this library.
Main components
3
STM32F103C8T6
LQFP-48(7x7)-40℃~+85℃ 12bit 20KB 2V~3.6V 32 Bit 37 64KB 72MHz ARM Cortex-M3 Built-in FLASH LQFP-48(7x7) Microcontrollers (MCU/MPU/SOC) ROHSSTMicroelectronicsMicrocontrollers (MCU/MPU/SOC)
FAN2558S33X
SOT-23-5-40℃~+85℃ 1 150uA 180mA 3.3V 5.5V 50dB@(100kHz) Fixed Over Current Protection、Thermal shutdown、Enable control、Operating status indication、Output discharge Positive SOT-23-5 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSonsemiUncategorisedLTC-2621P
DIP-13DIP-13 LED Segment Displays ROHSLite-OnLED Segment Displays
README
vna-steps/slowdds/README.md
Parts
27| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | 0.1u | Capacitors_SMD:C_0402 | C2, C3, C4, C5, C14 |
| 5 | 4.7u | Capacitors_SMD:C_0603 | C8, C9, C11, C12, C13 |
| 2 | 10k | Resistors_SMD:R_0402 | R1, R2 |
| 1 | 10n | Capacitors_SMD:C_0402 | C1 |
| 1 | 10u | Capacitors_Tantalum_SMD:TantalC_SizeA_EIA-3216_Reflow | C7 |
| 1 | 1u | Capacitors_SMD:C_0402 | C6 |
| 1 | 22p | Capacitors_SMD:C_0603 | C10 |
| 1 | 4.7u | kicad:XFL4020 | L1 |
| 1 | DEBUG_UART_CONN | Pin_Headers:Pin_Header_Straight_1x04 | P2 |
| 1 | FAN2558S33X | Housings_SOT-23_SOT-143_TSOT-6:SOT-23-5 | U3 |
| 1 | LTC2621 | Housings_DFN_QFN:DFN-10-1EP_3x3mm_Pitch0.5mm | U5 |
| 1 | LTC3542 | Housings_DFN_QFN:DFN-6-1EP_2x2mm_Pitch0.5mm | U4 |
| 1 | OSC | bce:SIOSC | U1 |
| 1 | STM32F103C8 | Housings_QFP:LQFP-48_7x7mm_Pitch0.5mm | U2 |
| 1 | SWD_CONN | Pin_Headers:Pin_Header_Straight_1x06 | P1 |
| 1 | USB-MINI-B | Connect:USB_Mini-B | CON1 |
| 1 | VOUT_CONN | Pin_Headers:Pin_Header_Straight_2x02 | P3 |
| 1 | ponface | bce:ponface | G*** |
Questions
How big is the Digital buck PCB?
It measures 42 × 32 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Digital buck use?
27 parts, built around the STM32F103C8T6, FAN2558S33X and LTC-2621P. 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 Digital buck KiCad files?
From the brightcloudy/pcb repository on GitHub, at the commit this page was made from: the board is digital-buck/digital-buck.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Digital buck design in my own project?
Its repository publishes it under the MIT 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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