XL1583E1

@@ -0,0 +1,47 @@+# XL1583E1++**XLSEMI** · DC-DC Converters · SOIC-8++XL1583E1 from XLSEMI, in a SOIC-8. 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 | No connect. Not internally bonded; leave floating or tie to ground for mechanical stability. |+| 2 | VIN | power_in | Supply voltage input. Operates from 3.6V to 28V DC (absolute max 32V). Bypass to GND with a suitably large low-ESR capacitor (typ. 220uF/35V) placed close to the pin to eliminate input noise. |+| 3 | SW | output | Power switch output node. Internal high-side MOSFET (~43mOhm) switches this pin between VIN and GND at 380 kHz; connects to the external inductor and catch Schottky diode of the buck converter. Current limit is typically 4.7A. |+| 4 | GND | power_in | Ground reference for the IC. Route outside the Schottky diode-to-output-capacitor ground path to prevent switching current spikes from injecting noise into the device. |+| 5 | FB | input | Feedback input. Compares the divided output voltage against the internal 1.222V reference to regulate VOUT via an external resistor divider: VOUT = 1.222 * (1 + R2/R1). |+| 6 | NC | unconnected | No connect. Not internally bonded; leave floating or tie to ground for mechanical stability. |+| 7 | EN | input | Enable input with hysteresis. Drive high (>=1.4V typ.) to turn the regulator on; drive low (<=0.8V typ.) to shut down (Is ~60uA). Floating defaults high. Absolute max VEN = VIN. |+| 8 | NC | unconnected | No connect. Not internally bonded; leave floating or tie to ground for mechanical stability. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | XLSEMI |+| Package | SOIC-8 |+| Category | PMIC |+| Pins | 8 |++## Ordering variants++- `XL1583E1E1`++## CAD (KiCad official)++- Symbol: `XL1583E1`+- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`+- 3D model: SOIC-8 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [XLSEMI datasheet](docs/xl1583e1-datasheet.pdf) (10 pp, sha256 `3c15efb52e39a748`, 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/xl1583e1-datasheet.pdf)

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