XL4301E1

@@ -0,0 +1,47 @@+# XL4301E1++**XLSEMI** · DC-DC Converters · SOIC-8-EP++XL4301E1 from XLSEMI, in a SOIC-8-EP. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | NC | unconnected | Not connected. Leave floating or tie to ground per PCB convention. |+| 2 | SW | output | Power switch output. Drain of the internal high-side MOSFET; connects to the external inductor/catch diode of the buck converter. The back exposed pad is internally tied to SW and should be connected to this node on the PCB. |+| 3 | GND | power_in | Ground reference for the IC and the return for the input/output bypass capacitors. |+| 4 | FB | input | Feedback input to the internal error amplifier. Senses the regulated output through an external resistor divider; regulation threshold is 1.25 V typical (VOUT = 1.25 V x (1 + R2/R1)). |+| 5 | CS | input | Output current sense input for the constant-current loop. Load current is set by an external sense resistor: Iload = 0.11 V / RCS (VCS typ. 110 mV). |+| 6 | LC | input | Output cable-loss compensation input. A user-programmable resistor (R3) from this pin to ground selects the amount of voltage-drop compensation added to the output as a function of load current (see Table 2). |+| 7 | VC | passive | Internal voltage regulator bypass pin. Connect a 1 uF capacitor from VC to VIN to decouple the internal LDO that supplies the control circuitry. |+| 8 | VIN | power_in | Supply voltage input, 8 V to 40 V DC operating range (45 V absolute maximum). Bypass to GND with a suitably large low-ESR capacitor (e.g. 100 uF/50 V) close to the pin to eliminate input noise. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | XLSEMI |+| Package | SOIC-8-EP |+| Category | PMIC |+| Pins | 8 |++## Ordering variants++- `XL4301E1E1`++## CAD (KiCad official)++- Symbol: `XL4301E1`+- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`+- 3D model: SOIC-8-EP (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [XLSEMI datasheet](docs/xl4301e1-datasheet.pdf) (10 pp, sha256 `3f3b4c16d0fca911`, retrieved 2026-08-17, tier: manufacturer)+- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/xl4301e1-datasheet.pdf)

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