# NF\-Dual Output Buck \| Basic Board \[Example\]

## Description

Compact USB‑C\-powered dual\-output DC/DC power supply\. It uses a TPS62402 dual buck converter to turn USB 5 V into regulated 1\.8 V and 3\.3 V outputs, each exposed through headers with indicator LEDs and test points, on a 40 × 40 mm enclosed PCB\.

## Project Details

- **Owner:** lelox
- **Created:** 9/29/2026
- **Last Updated:** 9/29/2026
- **Visibility:** Public

## Key Components

### DNP — [10kΩ 0603 Resistor](https://flux.ai/adrian95/10kohm-0603-resistor~yfg.md)

- Part Type: Resistor
- Manufacturer Name: Vishay
- Manufacturer Part Number: CRCW060310K0JNEAC
- License: https://creativecommons\.org/licenses/by/4\.0/
- Resistance: 10kΩ
- Package: SMD\_0603\_1608Metric
- Datasheet URL: https://www\.vishay\.com/docs/28773/crcwce3\.pdf

**Pins:**
- P1 [pin 1]
- P2 [pin 2]

### H1 — [Generic Non\-Plated Mounting Hole](https://flux.ai/jharwinbarrozo/generic-non-plated-mounting-hole~9q.md)

- Mounting Hole Size: M3
- Size: M4
- Role Details: M4 non\-plated mounting hole near top\-left rounded corner
- Part Type: Mechanical
- Role: Mechanical

### H2 — [Generic Non\-Plated Mounting Hole](https://flux.ai/jharwinbarrozo/generic-non-plated-mounting-hole~9q.md)

- Mounting Hole Size: M3
- Size: M4
- Part Type: Mechanical
- Role: Mechanical
- Role Details: M4 non\-plated mounting hole near top\-right rounded corner

### H3 — [Generic Non\-Plated Mounting Hole](https://flux.ai/jharwinbarrozo/generic-non-plated-mounting-hole~9q.md)

- Mounting Hole Size: M3
- Role: Mechanical
- Size: M4
- Part Type: Mechanical
- Role Details: M4 non\-plated mounting hole near bottom\-left rounded corner

### H4 — [Generic Non\-Plated Mounting Hole](https://flux.ai/jharwinbarrozo/generic-non-plated-mounting-hole~9q.md)

- Mounting Hole Size: M3
- Role Details: M4 non\-plated mounting hole near bottom\-right rounded corner
- Role: Mechanical
- Part Type: Mechanical
- Size: M4

### J1 — [USB4215\-03\-A](https://flux.ai/adrian95/usb4215-03-a~kg3.md)

- Role: USB\-C Power Input
- Datasheet URL: https://gct\.co/files/specs/usb4215\-spec\.pdf
- Part Type: USB C
- Symbol Style: parametric\-v1
- Package or Case Code: GCT\_USB4215\-03\-A\_REVA
- License: https://creativecommons\.org/licenses/by/4\.0/
- Manufacturer Name: GCT
- Role Details: GCT USB4215\-03\-A USB\-C 2\.0 receptacle used as 5V input for dual\-output buck
- Manufacturer Part Number: USB4215\-03\-A

**Pins:**
- CC1 [pin A5]
- CC2 [pin B5]
- DN1 [pin A7]
- DN2 [pin B7]
- DP1 [pin A6]
- DP2 [pin B6]
- GND\_A [pin A1\_B12]
- GND\_B [pin B1\_A12]
- SBU1 [pin A8]
- SBU2 [pin B8]
- SHIELD [pin SH1]
- SHIELD [pin SH4]
- SHIELD [pin SH2]
- SHIELD [pin SH3]
- VBUS\_A [pin A4\_B9]
- VBUS\_B [pin B4\_A9]

### J2 — [Pin Header 01x02 2\.54mm Vertical](https://flux.ai/jharwinbarrozo/generic-pin-header-01x02-2p54mm-vertical~4uy.md)

- Manufacturer Name: Sullins Connector Solutions
- Connector Type: Headers and Wire Housings
- Product Info Url: https://www\.digikey\.com/en/products/detail/sullins\-connector\-solutions/PCC02SAAN/4558522
- Digi\-Key Part Number: 4558522
- Connector Positions: 2
- License: https://creativecommons\.org/licenses/by/4\.0/
- Manufacturer Part Number: PCC02SAAN
- Role Details: PCC02SAAN\-style unshrouded 1x2 vertical through\-hole male header, 2\.54 mm pitch; generic unshrouded footprint used because exact Flux library part is unavailable\.
- Connector Pitch: 2\.54mm
- Connector Gender: Male
- Part Type: Connector

**Pins:**
- P1 [pin 1]
- P2 [pin 2]

### J3 — [Pin Header 01x02 2\.54mm Vertical](https://flux.ai/jharwinbarrozo/generic-pin-header-01x02-2p54mm-vertical~4uy.md)

- Manufacturer Name: Sullins Connector Solutions
- Product Info Url: https://www\.digikey\.com/en/products/detail/sullins\-connector\-solutions/PCC02SAAN/4558522
- Role Details: PCC02SAAN\-style unshrouded 1x2 vertical through\-hole male header, 2\.54 mm pitch; generic unshrouded footprint used because exact Flux library part is unavailable\.
- Connector Pitch: 2\.54mm
- Connector Positions: 2
- Digi\-Key Part Number: 4558522
- License: https://creativecommons\.org/licenses/by/4\.0/
- Manufacturer Part Number: PCC02SAAN
- Connector Type: Headers and Wire Housings
- Connector Gender: Male
- Part Type: Connector

**Pins:**
- P1 [pin 1]
- P2 [pin 2]

### J4 — [Pin Header 01x02 2\.54mm Vertical](https://flux.ai/jharwinbarrozo/generic-pin-header-01x02-2p54mm-vertical~4uy.md)

- Role Details: PCC02SAAN\-style unshrouded 1x2 vertical through\-hole male header, 2\.54 mm pitch; generic unshrouded footprint used because exact Flux library part is unavailable\.
- Connector Pitch: 2\.54mm
- Connector Positions: 2
- Manufacturer Name: Sullins Connector Solutions
- Product Info Url: https://www\.digikey\.com/en/products/detail/sullins\-connector\-solutions/PCC02SAAN/4558522
- License: https://creativecommons\.org/licenses/by/4\.0/
- Manufacturer Part Number: PCC02SAAN
- Connector Type: Headers and Wire Housings
- Digi\-Key Part Number: 4558522
- Connector Gender: Male
- Part Type: Connector

**Pins:**
- P1 [pin 1]
- P2 [pin 2]

### LED1 — [150060RS73220](https://flux.ai/vasy_skral/150060rs73220~kj9.md)

- Role: Current Limiting
- Manufacturer Name: Würth
- Digi\-Key Part Number: 732\-11996\-1\-ND
- Forward Voltage: 2\.0V
- Package or Case Code: D\_0603\_1608Metric
- License: https://creativecommons\.org/licenses/by/4\.0/
- Role Details: Red 0603 USB\_5V/input\-present indicator LED; Digi\-Key stocked part 732\-11996\-1\-ND\.
- Datasheet URL: https://www\.we\-online\.com/components/products/datasheet/150060RS73220\.pdf
- Current: 2mA
- Part Type: LED
- Manufacturer Part Number: 150060RS73220

**Pins:**
- A [pin 2]
- K [pin 1]

### LED2 — [150060RS73220](https://flux.ai/vasy_skral/150060rs73220~kj9.md)

- Role Details: Red 0603 3\.3V rail indicator LED; Digi\-Key stocked part 732\-11996\-1\-ND\.
- Manufacturer Name: Würth
- Digi\-Key Part Number: 732\-11996\-1\-ND
- Forward Voltage: 2\.0V
- Role: Current Limiting
- License: https://creativecommons\.org/licenses/by/4\.0/
- Package or Case Code: D\_0603\_1608Metric
- Datasheet URL: https://www\.we\-online\.com/components/products/datasheet/150060RS73220\.pdf
- Part Type: LED
- Manufacturer Part Number: 150060RS73220
- Current: 2mA

**Pins:**
- A [pin 2]
- K [pin 1]

### LED3 — [150060RS73220](https://flux.ai/vasy_skral/150060rs73220~kj9.md)

- Role Details: Red 0603 3\.3V rail indicator LED; Digi\-Key stocked part 732\-11996\-1\-ND\.
- Manufacturer Name: Würth
- Digi\-Key Part Number: 732\-11996\-1\-ND
- Forward Voltage: 2\.0V
- Role: Current Limiting
- License: https://creativecommons\.org/licenses/by/4\.0/
- Package or Case Code: D\_0603\_1608Metric
- Datasheet URL: https://www\.we\-online\.com/components/products/datasheet/150060RS73220\.pdf
- Part Type: LED
- Manufacturer Part Number: 150060RS73220
- Current: 2mA

**Pins:**
- A [pin 2]
- K [pin 1]

### U1 — TPS62402DRCT\-DATASHEET\-SYMBOL

- Manufacturer Name: Texas Instruments
- Role: Power Conversion
- JLCPCB Part Class: Extended Part
- Part Type: Integrated Circuits
- Role Details: Reverted custom TPS62402 datasheet\-style symbol: VIN/EN\_1/EN\_2/MODE\-DATA left, FB1/SW1/DEF\_1/SW2/ADJ2/GND right\.
- Package or Case Code: 10\-VSON
- LCSC Part Number: C2073323
- Manufacturer Part Number: TPS62402DRCT
- Datasheet URL: https://www\.ti\.com/lit/ds/symlink/tps62402\.pdf
- Frequency: 2\.25MHz

**Pins:**
- ADJ2 [pin 1]
- DEF\_1 [pin 5]
- EN\_1 [pin 7]
- EN\_2 [pin 9]
- EP [pin 11]
- FB1 [pin 4]
- GND [pin 8]
- MODE/DATA [pin 2]
- SW1 [pin 6]
- SW2 [pin 10]
- VIN [pin 3]

*The full schematic, PCB layout, bill of materials, and interactive design are available at [https://flux\.ai/lelox/nf\-dual\-output\-buck\-or\-basic\-board\-example\~au](https://flux.ai/lelox/nf-dual-output-buck-or-basic-board-example~au).*

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*Generated from [https://flux\.ai/lelox/nf\-dual\-output\-buck\-or\-basic\-board\-example\~au](https://flux.ai/lelox/nf-dual-output-buck-or-basic-board-example~au)*