XL4013E1

@@ -0,0 +1,44 @@+# XL4013E1++**XLSEMI** · DC-DC Converters · TO-252-5++XL4013E1 from XLSEMI, in a TO-252-5. 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 | GND | power_in | Ground pin. Care must be taken in layout: this pin should be placed outside of the Schottky diode-to-output-capacitor ground path to prevent switching current spikes from inducing voltage noise into the XL4013. |+| 2 | FB | input | Feedback pin. Through an external resistor divider network, FB senses the output voltage and regulates it. The feedback threshold voltage is 1.25 V (VOUT = 1.25 * (1 + R2/R1)). |+| 3 | SW | power_out | Power switch output pin. SW is the switch node that supplies power to the output through the external inductor and Schottky catch diode. The metal tab of the TO252-5L is also connected to SW. |+| 4 | VC | passive | Internal voltage regulator bypass capacitor pin. Connect a 1 uF capacitor from VC to VIN to bypass the internal 3.3 V regulator. |+| 5 | VIN | power_in | Supply voltage input pin. XL4013 operates from an 8 V to 36 V DC input (absolute max 40 V). Bypass VIN to GND with a suitably large capacitor (e.g. 100 uF/50 V) to eliminate noise on the input. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | XLSEMI |+| Package | TO-252-5 |+| Category | PMIC |+| Pins | 5 |++## Ordering variants++- `XL4013E1`++## CAD (KiCad official)++- Symbol: `XL4013E1`+- Footprint: `Package_TO_SOT_SMD:TO-252-5_TabPin6`+- 3D model: TO-252-5 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [XLSEMI datasheet](docs/xl4013e1-datasheet.pdf) (10 pp, sha256 `c5fbf5aaf98d1650`, 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/xl4013e1-datasheet.pdf)

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