# Learn PCB 0ddc ## Description A simple fixed linear voltage regulator board that can provide 3.3V up to 1A output and could operate down to 1V input-to-output differential. #firstpcbFlux ## Project Details - **Owner:** rafa5243 - **Created:** 7/11/2025 - **Last Updated:** 7/11/2025 - **Visibility:** Public ## Key Components ### IC1 — [BA7805FP-E2](https://www.flux.ai/vasyl/ba7805fp-e2.md) - Datasheet URL: https://datasheet.lcsc.com/lcsc/1809301321_ROHM-Semicon-BA7805FP-E2_C79639.pdf - Manufacturer Part Number: BA7805FP-E2 - Manufacturer Name: ROHM Semicon - Part Type: Integrated Circuit **Pins:** - INPUT - N-C- - OUTPUT ### J1 — [JST B2B PH K 01x02 Connector](https://www.flux.ai/jharwinbarrozo/jst-b2b-ph-k-01x02-connector.md) - Datasheet URL: https://www.jst-mfg.com/product/pdf/eng/ePH.pdf - Part Type: Connector - Manufacturer Name: JST Sales America - Manufacturer Part Number: B2B-PH-K-S(LF)(SN) **Pins:** - PIN1 [pin 1] - PIN2 [pin 2] ### J2 — [Terminal Block, 4-Contact, 5.08mm Pitch, Through Hole Mount, 1-Row, Screw Termination](https://www.flux.ai/mrcyme/terminal-blockc-4-contactc-5p08mm-pitchc-through-hole-mountc-1-rowc-screw-termination.md) - Part Type: Connector - Manufacturer Name: DORABO - Manufacturer Part Number: DB2ERC-3.5-9P-GN - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.lcsc.com/datasheet/lcsc_datasheet_2303271530_DORABO-DB2ERC-3-5-9P-GN_C430560.pdf **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] - Pin_3 [pin 3] - Pin_4 [pin 4] ### U1 — [ESP32-DEVKIT-V1](https://www.flux.ai/jharwinbarrozo/esp32-devkit-v1.md) - Datasheet URL: https://www.espressif.com/sites/default/files/documentation/esp32_datasheet_en.pdf - Manufacturer Name: Espressif Systems - Manufacturer Part Number: ESP32-DEVKIT-V1 - Part Type: Module - Symbol Style: Parametric **Pins:** - 3V3 [pin 1] - D12 [pin 27] - D13 [pin 28] - D14 [pin 26] - D15 [pin 3] - D18 [pin 9] - D19 [pin 10] - D2 [pin 4] - D21 [pin 11] - D22 [pin 14] - D23 [pin 15] - D25 [pin 23] - D26 [pin 24] - D27 [pin 25] - D32 [pin 21] - D33 [pin 22] - D34 [pin 19] - D35 [pin 20] - D4 [pin 5] - D5 [pin 8] - EN [pin 16] - GND [pin 2] - GND_1 [pin 29] - RX0 [pin 12] - RX2 [pin 6] - TX0 [pin 13] - TX2 [pin 7] - VIN [pin 30] - VN [pin 18] - VP [pin 17] ### U3 — [7805](https://www.flux.ai/lcsc/7805.md) - JLCPCB Part Class: Extended Part - Compliance: RoHS - Manufacturer Name: 集晶电子 - LCSC Part Number: C2984683 - Manufacturer Part Number: 7805 - Part Type: Linear Voltage Regulators (LDO) - Package or Case Code: TO-220-3_L10.0-W4.5-P2.54-L **Pins:** - GND [pin 2] - IN [pin 1] - OUT [pin 3] ### U4 — [TB6612FNG](https://www.flux.ai/jecstronic/tb6612fng.md) - Part Type: Module - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: Pololu - Manufacturer Part Number: TB6612FNG - Datasheet URL: https://www.pololu.com/product/713 **Pins:** - AIN1 [pin 14] - AIN2 [pin 15] - AO1 [pin 3] - AO2 [pin 4] - BIN1 [pin 12] - BIN2 [pin 11] - BO1 [pin 6] - BO2 [pin 5] - GND [pin 9] - GND [pin 1] - GND [pin 8] - PWMA [pin 16] - PWMB [pin 10] - STBY [pin 13] - VCC [pin 2] - VMOT [pin 7] ### U8 — [MC7805BDTRKG](https://www.flux.ai/lcsc/mc7805bdtrkg.md) - Operating Temperature: -40~+125℃ - JLCPCB Part Class: Extended Part - Manufacturer Part Number: MC7805BDTRKG - Product Info Url: https://lcsc.com/product-detail/Linear-Voltage-Regulators_ON_MC7805BDTRKG_MC7805BDTRKG_C110908.html - Part Type: Linear Voltage Regulators (LDO) - Manufacturer Name: onsemi(安森美) - Package or Case Code: TO-252-2_L6.6-W6.1-P4.57-LS9.9-TL-CW - LCSC Part Number: C110908 - Output Current: 1A - Max Input Voltage: 35V - Dropout Voltage: 2V@(1A)V - Max Output Voltage: 5V - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_onsemi-MC7805BDTRKG_C110908.pdf **Pins:** - GND [pin 2] - IN [pin 1] - OUT [pin 3] ### U9 — [7805](https://www.flux.ai/lcsc/7805.md) - Manufacturer Name: 集晶电子 - LCSC Part Number: C2984683 - Package or Case Code: TO-220-3_L10.0-W4.5-P2.54-L - Manufacturer Part Number: 7805 - Part Type: Linear Voltage Regulators (LDO) - Compliance: RoHS - JLCPCB Part Class: Extended Part **Pins:** - GND [pin 2] - IN [pin 1] - OUT [pin 3] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/rafa5243/learn-pcb-0ddc](https://www.flux.ai/rafa5243/learn-pcb-0ddc).* --- *Generated from [https://www.flux.ai/rafa5243/learn-pcb-0ddc](https://www.flux.ai/rafa5243/learn-pcb-0ddc)*