ESP32-S3-DevKit-LiPo Development Board Rev B Schematic
Schematic for the Olimex ESP32-S3-DevKit-LiPo, featuring an ESP32-S3-WROOM-1 module, LiPo battery charging, dual USB-C ports, and CH340X USB-to-UART converter.
Overview
This technical document details the circuit design for the Olimex ESP32-S3-DevKit-LiPo Rev B development board. It features the Espressif ESP32-S3-WROOM-1-N8R8 module integrated with a BL4054B LiPo battery charger and a SY8089AAAC DC-DC step-down converter for power management. The design includes dual USB-C interfaces: one for native USB-OTG/JTAG and one dedicated to UART via the CH340X bridge. The board provides battery level sensing on GPIO6, power sensing on GPIO5, a UEXT connector, and dual 22-pin extension headers compatible with the ESP32-S3-DevKitC-1 pinout.
Use Cases
- Battery-powered IoT application development
- ESP32-S3 hardware prototyping
- Portable wireless device design
- Low-power embedded systems with integrated LiPo management
Topics
Referenced Parts
ESP32-S3-WROOM-1-N8R8
Espressif
U4 ESP32-S3-WROOM-1-N8R8
BL4054B-42TPRN
Shanghai Belling
U1 BL4054B-42TPRN(SOT23-5)
SY8089AAAC
Silergy
U2 SY8089AAAC(SOT23-5)
CH340X
WCH
U3 CH340X(MSOP-10)
WPM2015-3/TR
Willsemi
FET1 WPM2015-3/TR
A40-00119-A52-12
XKB Connectivity
USB-C-16P-F(A40-00119-A52-12)
YTS-A016-X
XKB Connectivity
RST1 YTS-A016-X
ESP32-S3R8
Espressif
Note: that embed ESP32-S3R8, pins IO35, IO36 and IO37 are connected to the OSPI PSRAM
BATTERY-LIPO1400mAh
Olimex
Recommended LI-PO battery: https://www.olimex.com/Products/Power/BATTERY-LIPO1400mAh/
1N5819S4
Willsemi
D3 1N5819S4/SOD123
| BM10B-SRSS-TB | JST | pUEXT1 BM10B-SRSS-TB |
| NR3015T2R2M | Taiyo Yuden | L1 2.2uH/1.5A/DCR=72mR/20%/3.00x3.00x1.50mm/CD32(NR3015T2R2M) |
| BC817-40 | Nexperia | T1 BC817-40(SOT23) |
| ESP32-S3-WROOM-1-N8R8 | Espressif | U4 ESP32-S3-WROOM-1-N8R8 |
| BL4054B-42TPRN | Shanghai Belling | U1 BL4054B-42TPRN(SOT23-5) |
| SY8089AAAC | Silergy | U2 SY8089AAAC(SOT23-5) |
| CH340X | WCH | U3 CH340X(MSOP-10) |
| WPM2015-3/TR | Willsemi | FET1 WPM2015-3/TR |
| A40-00119-A52-12 | XKB Connectivity | USB-C-16P-F(A40-00119-A52-12) |
| YTS-A016-X | XKB Connectivity | RST1 YTS-A016-X |
| ESP32-S3R8 | Espressif | Note: that embed ESP32-S3R8, pins IO35, IO36 and IO37 are connected to the OSPI PSRAM |
| BATTERY-LIPO1400mAh | Olimex | Recommended LI-PO battery: https://www.olimex.com/Products/Power/BATTERY-LIPO1400mAh/ |
| 1N5819S4 | Willsemi | D3 1N5819S4/SOD123 |