# XBL4001DTR

**XBLW** · DC-DC Converters · SOP-8

XBL4001DTR from XBLW, in a SOP-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | SW | power_out | Power switch output pin; SW is the switch node that supplies power to the output. |
| 2 | SW | power_out | Power switch output pin; SW is the switch node that supplies power to the output. |
| 3 | GND | power_in | Ground pin; place it outside of the Schottky diode to output capacitor ground path to prevent switching current spikes from inducing voltage noise into the XBL4001. |
| 4 | FB | input | Feedback pin; an external resistor divider senses and regulates the output voltage, with a feedback threshold of 1.235V. |
| 5 | CS | input | Output current sense pin, with ILOAD=0.155V/Rcs. |
| 6 | EN | input | Enable pin; drive high or float to turn on the device, drive low to turn it off. |
| 7 | VIN | power_in | Supply voltage input pin, operating from 4.5V to 40V DC; bypass VIN to GND with a suitably large capacitor to eliminate noise on the input. |
| 8 | VIN | power_in | Supply voltage input pin, operating from 4.5V to 40V DC; bypass VIN to GND with a suitably large capacitor to eliminate noise on the input. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | XBLW |
| Package | SOP-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |

## CAD (KiCad official)

- Symbol: `XBL4001DTR`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files: `xbl4001dtr-etched.step` / `xbl4001dtr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `xbl4001dtr.step` / `xbl4001dtr.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [XBLW datasheet](docs/xbl4001dtr-datasheet.pdf) (12 pp, sha256 `d379c04fa9f5cbea`, retrieved 2026-10-23, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (vision), consensus `claude-opus-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/xbl4001dtr-datasheet.pdf)