# Universal Mini Router UPS Pro v1.0 8e8b ## Description Production-ready 3S 18650 mini router/ONU UPS with 12V adapter input, no-reboot switchover, 12V/9V/5V regulated outputs, battery charging/protection, monitoring, and JLCPCB SMT assembly target. ## Project Details - **Owner:** irfanislam82 - **Created:** 5/17/2026 - **Last Updated:** 5/17/2026 - **Visibility:** Public - **Compliance:** JLCPCB SMT assembly target; RoHS components preferred; Li-ion safety design required - **Implementation Details:** 3S architecture selected by user. 12V input cannot charge a 3S pack with a simple buck charger; design requires a buck-boost/boost charger or a higher-voltage adapter input. Output must use an always-on regulated 12V rail with hold-up capacitance and ideal-diode/power-path control for no-reboot switchover. - **Operating Voltage:** 12V adapter input; 3S Li-ion battery 9.0V to 12.6V; regulated 12V, 9V, and 5V outputs - **Human Interface:** Power switch, battery indicator push button, input/charge/full/battery/low-battery LEDs, optional OLED/I2C header - **Power Requirements:** 12V DC barrel input; 3S 18650 Li-ion pack; seamless adapter-to-battery switchover for router/ONU no-reboot operation; 12V output target 3A continuous / 4A peak; 9V 2A; 5V USB 3A - **Domain:** Networking power backup / UPS ## Key Components ### D1 — [SMBJ15CA](https://www.flux.ai/lcsc/smbj15ca~bify.md) - Product Info Url: https://lcsc.com/product-detail/TVS_Shikues-SMBJ15CA_C499834.html - Part Type: TVS - Manufacturer Part Number: SMBJ15CA - JLCPCB Part Class: Extended Part - Diode Type: TVS Diode - Package or Case Code: SMBF_L4.3-W3.6-LS5.3-BI - Manufacturer Name: SHIKUES(时科) - Forward Voltage: 0.7V - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2410010132_Shikues-SMBJ15CA_C499834.pdf - LCSC Part Number: C499834 - Max Reverse Voltage: 15V **Pins:** - A [pin 2] - C [pin 1] ### D2 — [B340A-13-F](https://www.flux.ai/adrian95/b340a-13-f~1zv.md) - Manufacturer Name: Diodes Incorporated - Part Type: Diode - Datasheet URL: https://www.diodes.com/assets/Datasheets/ds30891.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: B340A-13-F **Pins:** - A [pin 2] - K [pin 1] ### D3 — [B340A-13-F](https://www.flux.ai/adrian95/b340a-13-f~1zv.md) - Manufacturer Part Number: B340A-13-F - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.diodes.com/assets/Datasheets/ds30891.pdf - Part Type: Diode - Manufacturer Name: Diodes Incorporated **Pins:** - A [pin 2] - K [pin 1] ### J1 — [DC-005-5A-2.0](https://www.flux.ai/lcsc/dc-005-5a-2p0~yp4t.md) - Part Type: AC/DC Power Connectors - Product Info Url: https://lcsc.com/product-detail/New-Arrivals_XKB-Enterprise-DC-005-5A-2-0_C381116.html - Manufacturer Name: XKB Connectivity(中国星坤) - Package or Case Code: DC-IN-TH_DC-005-5A-2.0 - Manufacturer Part Number: DC-005-5A-2.0 - JLCPCB Part Class: Extended Part - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2110151630_XKB-Connection-DC-005-5A-2-0_C381116.pdf - LCSC Part Number: C381116 **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] ### J2 — [KF128-5.08-2P-AA](https://www.flux.ai/lcsc/kf128-5p08-2p-aa~0pbi.md) - Operating Temperature: -40℃~+105℃ - Manufacturer Part Number: KF128-5.08-2P-AA - Current Rating: 24A - Package or Case Code: CONN-TH_P5.08_KF128-5.08-2P - Connector Rows: 1 - Part Type: Screw terminal - Manufacturer Name: KEFA(科发) - Connector Pitch: 5.08mm - Connector Gender: Female - Connector Type: Screw terminal - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2408211511_Cixi-Kefa-Elec-KF128-5-08-2P-AA_C474952.pdf - LCSC Part Number: C474952 - Product Info Url: https://lcsc.com/product-detail/New-Quadratic-Unclassified-Data_Cixi-Kefa-Elec-KF128-5-08-2P_C474952.html - Connector Positions: 2 - JLCPCB Part Class: Extended Part **Pins:** - 1 [pin 1] - 2 [pin 2] ### J3 — [KF128-5.08-2P-AA](https://www.flux.ai/lcsc/kf128-5p08-2p-aa~0pbi.md) - Package or Case Code: CONN-TH_P5.08_KF128-5.08-2P - Connector Rows: 1 - Current Rating: 24A - Manufacturer Name: KEFA(科发) - Part Type: Screw terminal - Operating Temperature: -40℃~+105℃ - Manufacturer Part Number: KF128-5.08-2P-AA - LCSC Part Number: C474952 - JLCPCB Part Class: Extended Part - Connector Positions: 2 - Product Info Url: https://lcsc.com/product-detail/New-Quadratic-Unclassified-Data_Cixi-Kefa-Elec-KF128-5-08-2P_C474952.html - Connector Pitch: 5.08mm - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2408211511_Cixi-Kefa-Elec-KF128-5-08-2P-AA_C474952.pdf - Connector Type: Screw terminal - Connector Gender: Female **Pins:** - 1 [pin 1] - 2 [pin 2] ### J4 — [USB-A1VSB6](https://www.flux.ai/vasyl/usb-a1vsb6~qx.md) - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: USB-A1VSB6 - Symbol Style: parametric-v1 - Part Type: USB A - Datasheet URL: https://www.snapeda.com/parts/USB-A1VSB6/On%20Shore/datasheet/ - Manufacturer Name: OST **Pins:** - D- [pin 2] - D+ [pin 3] - GND [pin 4] - SHIELD [pin S1] - SHIELD__1 [pin S2] - VUSB [pin 1] ### J5 — [KF128-5.08-2P-AA](https://www.flux.ai/lcsc/kf128-5p08-2p-aa~0pbi.md) - Current Rating: 24A - Package or Case Code: CONN-TH_P5.08_KF128-5.08-2P - Connector Rows: 1 - Part Type: Screw terminal - Manufacturer Name: KEFA(科发) - Operating Temperature: -40℃~+105℃ - Manufacturer Part Number: KF128-5.08-2P-AA - LCSC Part Number: C474952 - Product Info Url: https://lcsc.com/product-detail/New-Quadratic-Unclassified-Data_Cixi-Kefa-Elec-KF128-5-08-2P_C474952.html - Connector Positions: 2 - JLCPCB Part Class: Extended Part - Connector Pitch: 5.08mm - Connector Gender: Female - Connector Type: Screw terminal - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2408211511_Cixi-Kefa-Elec-KF128-5-08-2P-AA_C474952.pdf **Pins:** - 1 [pin 1] - 2 [pin 2] ### J6 — [B4B-XH-A(LF)(SN)](https://www.flux.ai/lcsc/b4b-xh-alfsn~so1x.md) - Part Type: Wire To Board / Wire To Wire Connector - Rows: 1 - Manufacturer Name: JST - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_JST-B4B-XH-A-LF-SN_C144395.pdf - Positions: 4 - Package or Case Code: CONN-TH_B4B-XH-A-LF-SN - Connector Type: Wire-to-board Header - LCSC Part Number: C144395 - Pitch: 2.5mm - Product Info Url: https://lcsc.com/product-detail/_JST-Sales-America_B4B-XH-A-LF-SN_JST-Sales-America-B4B-XH-A-LF-SN_C144395.html - Manufacturer Part Number: B4B-XH-A(LF)(SN) - Gender: Male - JLCPCB Part Class: Extended Part **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] ### J7 — [901210764](https://www.flux.ai/lcsc/901210764~46d.md) - Manufacturer Name: MOLEX - Datasheet URL: https://assets.lcsc.com/datasheet/szlcsc/Download-ISO9001-Certification.pdf - LCSC Part Number: C293357 - Part Type: Pin Headers - JLCPCB Part Class: Extended Part - Package or Case Code: HDR-TH_4P-P2.54-H-M-W11.0 - Product Info Url: https://lcsc.com/product-detail/PCB-Connectors-Headers-Male-Pins_MOLEX-901210764_C293357.html - Manufacturer Part Number: 901210764 **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] ### LED1 — [Generic LED SMD](https://www.flux.ai/jharwinbarrozo/generic-led-smd~ku.md) - Package: LED_0603_1608Metric - Part Type: LED **Pins:** - A [pin 2] - K [pin 1] ### LED2 — [Generic LED SMD](https://www.flux.ai/jharwinbarrozo/generic-led-smd~ku.md) - Package: LED_0603_1608Metric - Part Type: LED **Pins:** - A [pin 2] - K [pin 1] ### LED3 — [Generic LED SMD](https://www.flux.ai/jharwinbarrozo/generic-led-smd~ku.md) - Package: LED_0603_1608Metric - Part Type: LED **Pins:** - A [pin 2] - K [pin 1] ### LED4 — [Generic LED SMD](https://www.flux.ai/jharwinbarrozo/generic-led-smd~ku.md) - Package: LED_0603_1608Metric - Part Type: LED **Pins:** - A [pin 2] - K [pin 1] ### LED5 — [Generic LED SMD](https://www.flux.ai/jharwinbarrozo/generic-led-smd~ku.md) - Package: LED_0603_1608Metric - Part Type: LED **Pins:** - A [pin 2] - K [pin 1] ### LED6 — [Generic LED SMD](https://www.flux.ai/jharwinbarrozo/generic-led-smd~ku.md) - Package: LED_0603_1608Metric - Part Type: LED **Pins:** - A [pin 2] - K [pin 1] ### LED7 — [Generic LED SMD](https://www.flux.ai/jharwinbarrozo/generic-led-smd~ku.md) - Package: LED_0603_1608Metric - Part Type: LED **Pins:** - A [pin 2] - K [pin 1] ### LED8 — [Generic LED SMD](https://www.flux.ai/jharwinbarrozo/generic-led-smd~ku.md) - Package: LED_0603_1608Metric - Part Type: LED **Pins:** - A [pin 2] - K [pin 1] ### LED9 — [Generic LED SMD](https://www.flux.ai/jharwinbarrozo/generic-led-smd~ku.md) - Package: LED_0603_1608Metric - Part Type: LED **Pins:** - A [pin 2] - K [pin 1] ### SW3 — [SS-12D10L5](https://www.flux.ai/lcsc/ss-12d10l5~58d7.md) - Operating Temperature: -40~+85℃ - Part Type: Slide Switches - Manufacturer Part Number: SS-12D10L5 - Contact Material: Copper alloy - LCSC Part Number: C319012 - Current Rating: 3A - Package or Case Code: SW-TH_SS-12D10L5 - Throw Configuration: Single Pole Double Throw (SPDT) - Voltage Rating: 125V - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2409302232_XKB-Connection-SS-12D10L5_C319012.pdf - Manufacturer Name: XKB Connectivity(中国星坤) - Product Info Url: https://lcsc.com/product-detail/Toggle-Switches_XKB-Enterprise-SS-12D10L5_C319012.html **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] ### SW4 — [KH-6X6X5H-STM](https://www.flux.ai/lcsc/kh-6x6x5h-stm~12so.md) - Switch Type: Tactile Switch - Current Rating: 50mA - Throw Configuration: SPST - Part Type: Tactile Switches - LCSC Part Number: C2837531 - Contact Material: gold-plated or silver alloy - Package or Case Code: SW-SMD_4P-L6.0-W6.0-P4.50-LS9.0-2 - Manufacturer Part Number: KH-6X6X5H-STM - JLCPCB Part Class: Extended Part - Voltage Rating: 12V - Manufacturer Name: kinghelm(金航标) **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] ### TP1 — [Generic Testpoint](https://www.flux.ai/jharwinbarrozo/generic-testpoint~esx.md) - Testpoint Size: 0.5 **Pins:** - P1 ### TP2 — [Generic Testpoint](https://www.flux.ai/jharwinbarrozo/generic-testpoint~esx.md) - Testpoint Size: 0.5 **Pins:** - P1 ### TP3 — [Generic Testpoint](https://www.flux.ai/jharwinbarrozo/generic-testpoint~esx.md) - Testpoint Size: 0.5 **Pins:** - P1 ### TP4 — [Generic Testpoint](https://www.flux.ai/jharwinbarrozo/generic-testpoint~esx.md) - Testpoint Size: 0.5 **Pins:** - P1 ### TP5 — [Generic Testpoint](https://www.flux.ai/jharwinbarrozo/generic-testpoint~esx.md) - Testpoint Size: 0.5 **Pins:** - P1 ### TP6 — [Generic Testpoint](https://www.flux.ai/jharwinbarrozo/generic-testpoint~esx.md) - Testpoint Size: 0.5 **Pins:** - P1 ### TP7 — [Generic Testpoint](https://www.flux.ai/jharwinbarrozo/generic-testpoint~esx.md) - Testpoint Size: 0.5 **Pins:** - P1 ### U1 — [BQ25798RQMR](https://www.flux.ai/lcsc/bq25798rqmr~1md8.md) - JLCPCB Part Class: Extended Part - Manufacturer Part Number: BQ25798RQMR - Manufacturer Name: TI(德州仪器) - Package or Case Code: QFN-29_L4.0-W4.0-P0.40-TL-BQ25792RQMR - LCSC Part Number: C2876593 **Pins:** - ~{CE} [pin 13] - ~{INT} [pin 21] - ~{QON} [pin 12] - ACDRV1 [pin 11] - ACDRV2 [pin 10] - BAT [pin 23] - BAT [pin 22] - BATP [pin 18] - BTST1 [pin 4] - BTST2 [pin 19] - D- [pin 7] - D+ [pin 6] - GND [pin 27] - ILIM_HIZ [pin 17] - PMID [pin 29] - PROG [pin 20] - REGN [pin 5] - SCL [pin 14] - SDA [pin 15] - SDRV [pin 24] - STAT [pin 1] - SW1 [pin 28] - SW2 [pin 26] - SYS [pin 25] - TS [pin 16] - VAC1 [pin 9] - VAC2 [pin 8] - VBUS [pin 3] - VBUS [pin 2] ### U2 — [TPS55288RPMR](https://www.flux.ai/lcsc/tps55288rpmr~lwsg.md) - Manufacturer Part Number: TPS55288RPMR - Part Type: DC-DC Converters - LCSC Part Number: C2864583 - JLCPCB Part Class: Extended Part - Manufacturer Name: TI(德州仪器) - Package or Case Code: VQFN-HR-26_L4.0-W3.5_TPS55288RPMR **Pins:** - AGND [pin 10] - BOOT1 [pin 22] - BOOT2 [pin 20] - CDC [pin 16] - COMP [pin 18] - DITH/SYNC [pin 7] - DR1H [pin 2] - DR1L [pin 1] - EN/UVLO [pin 4] - FB/INT [pin 14] - FSW [pin 8] - ILIM [pin 17] - ISN [pin 13] - ISP [pin 12] - MODE [pin 15] - PGND [pin 9] - PGND [pin 24] - SCL [pin 5] - SDA [pin 6] - SW1 [pin 23] - SW2 [pin 21] - SW2 [pin 25] - VCC [pin 19] - VIN [pin 3] - VOUT [pin 11] - VOUT [pin 26] ### U3 — [BQ76905RGRR](https://www.flux.ai/adrian95/bq76905rgrr~wfq.md) - Manufacturer Part Number: BQ76905RGRR - Datasheet URL: https://www.ti.com/lit/ds/symlink/bq76905.pdf - Part Type: Integrated Circuit - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: Texas Instruments Inc. **Pins:** - ALERT [pin 14] - BAT [pin 17] - CHG [pin 10] - DSG [pin 9] - EP [pin 21] - REGOUT [pin 15] - REGSRC [pin 16] - SCL [pin 12] - SDA [pin 13] - SRN [pin 7] - SRP [pin 6] - TS [pin 8] - VC0 [pin 5] - VC1 [pin 4] - VC2 [pin 3] - VC3A [pin 1] - VC3B [pin 2] - VC4A [pin 19] - VC4B [pin 20] - VC5 [pin 18] - VSS [pin 11] ### U4 — [BQ34Z100PWR-G1](https://www.flux.ai/adrian95/bq34z100pwr-g1~mqc.md) - Manufacturer Name: Texas Instruments Inc. - Datasheet URL: https://www.ti.com/lit/ds/symlink/bq34z100-g1.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: BQ34Z100PWR-G1 - Part Type: Integrated Circuit **Pins:** - BAT [pin 4] - CE [pin 5] - P1 [pin 3] - P2 [pin 1] - P3/SDA [pin 14] - P4/SCL [pin 13] - P5/HDQ [pin 12] - P6/TS [pin 11] - REG25 [pin 7] - REGIN [pin 6] - SRN [pin 10] - SRP [pin 9] - VEN [pin 2] - VSS [pin 8] ### U5 — [STM32G030K6T6](https://www.flux.ai/lcsc/stm32g030k6t6~a79f.md) - LCSC Part Number: C529331 - IC Type: Microcontroller - Package or Case Code: LQFP-32_L7.0-W7.0-P0.80-LS9.0-BL - Manufacturer Part Number: STM32G030K6T6 - Operating Temperature: -40 to 85°C - Product Info Url: https://lcsc.com/product-detail/ST-Microelectronics_STMicroelectronics-STM32G030K6T6_C529331.html - Manufacturer Name: ST(意法半导体) - JLCPCB Part Class: Extended Part - Part Type: ST Microelectronics - Frequency: 64MHz - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_STMicroelectronics-STM32G030K6T6_C529331.pdf - Operating Voltage: 2 ~ 3.6V **Pins:** - NRST [pin 6] - PA0 [pin 7] - PA1 [pin 8] - PA10 [pin 21] - PA11[PA9] [pin 22] - PA12[PA10] [pin 23] - PA13 [pin 24] - PA14-BOOT0 [pin 25] - PA15 [pin 26] - PA2 [pin 9] - PA3 [pin 10] - PA4 [pin 11] - PA5 [pin 12] - PA6 [pin 13] - PA7 [pin 14] - PA8 [pin 18] - PA9 [pin 19] - PB0 [pin 15] - PB1 [pin 16] - PB2 [pin 17] - PB3 [pin 27] - PB4 [pin 28] - PB5 [pin 29] - PB6 [pin 30] - PB7 [pin 31] - PB8 [pin 32] - PB9 [pin 1] - PC14-OSC32IN [pin 2] - PC15-OSC32OUT [pin 3] - PC6 [pin 20] - VDD/VDDA [pin 4] - VSS/VSSA [pin 5] ### U6 — [MP1584EN-LF-Z](https://www.flux.ai/adrian95/mp1584en-lf-z~aut.md) - Part Type: Power Management (PMIC) - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.monolithicpower.com/en/documentview/productdocument/index/version/2/document_type/Datasheet/lang/en/sku/MP1584EN-LF-Z/document_id/204/ - Manufacturer Name: Monolithic Power Systems Inc. - Manufacturer Part Number: MP1584EN-LF-Z **Pins:** - BST [pin 8] - COMP [pin 3] - EN [pin 2] - EPAD [pin EPAD] - FB [pin 4] - FREQ [pin 6] - GND [pin 5] - SW [pin 1] - VIN [pin 7] ### U7 — [MP1584EN-LF-Z](https://www.flux.ai/adrian95/mp1584en-lf-z~aut.md) - Manufacturer Part Number: MP1584EN-LF-Z - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.monolithicpower.com/en/documentview/productdocument/index/version/2/document_type/Datasheet/lang/en/sku/MP1584EN-LF-Z/document_id/204/ - Manufacturer Name: Monolithic Power Systems Inc. - Part Type: Power Management (PMIC) **Pins:** - BST [pin 8] - COMP [pin 3] - EN [pin 2] - EPAD [pin EPAD] - FB [pin 4] - FREQ [pin 6] - GND [pin 5] - SW [pin 1] - VIN [pin 7] ### U8 — [TPS259814ARPWR](https://www.flux.ai/adrian95/tps259814arpwr.md) - Manufacturer Name: Texas Instruments - License: https://creativecommons.org/licenses/by/4.0/ - Package or Case Code: TO - Datasheet URL: https://www.ti.com/lit/gpn/tps25981 - Symbol Style: parametric-v1 - Part Type: Integrated Circuit - Manufacturer Part Number: TPS259814ARPWR **Pins:** - ~EN~/OVLO [pin 2] - ~FLT_1 [pin 4] - ~FLT_2 [pin 12] - DVDT_1 [pin 7] - DVDT_2 [pin 13] - EN/UVLO_1 [pin 1] - EN/UVLO_2 [pin 11] - GND [pin 8] - ILM [pin 9] - IN [pin 5] - ITIMER_1 [pin 10] - ITIMER_2 [pin 14] - OUT [pin 6] - PG [pin 3] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/irfanislam82/universal-mini-router-ups-pro-v1p0-8e8b~tp](https://www.flux.ai/irfanislam82/universal-mini-router-ups-pro-v1p0-8e8b~tp).* --- *Generated from [https://www.flux.ai/irfanislam82/universal-mini-router-ups-pro-v1p0-8e8b~tp](https://www.flux.ai/irfanislam82/universal-mini-router-ups-pro-v1p0-8e8b~tp)*