XL2596S-5.0E1

@@ -0,0 +1,51 @@+# XL2596S-5.0E1++**XLSEMI** · DC-DC Converters · TO-263-5++XL2596S-5.0E1 from XLSEMI, in a TO-263-5. 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 | VIN | power_in | Supply voltage input. Operates from 4.5V to 40V DC. Bypass to GND with a suitably large capacitor (e.g. 470uF/35V in the typical app) to eliminate noise on the input. Absolute maximum -0.3 to 45V. |+| 2 | OUTPUT | output | Power switch output (SW). Internal NPN power transistor emitter/switch node that drives the external inductor and catch (Schottky) diode. Rated for 3A continuous load current with duty cycle up to 100%. |+| 3 | GND | power_in | Ground pin. Layout critical: route outside of the Schottky diode-to-output-capacitor ground path to prevent switching current spikes from injecting voltage noise into the XL2596. Metal tab is also tied to GND. |+| 4 | FEEDBACK | input | Feedback pin (FB). Senses the output voltage through an external resistor divider and regulates it to the internal 1.23V reference. For the fixed-5.0V version this pin is tied directly to VOUT (no divider needed). |+| 5 | ON/OFF | input | Enable pin with hysteresis. Drive LOW (or float, default low) to turn the device ON; drive HIGH to shut it down (TTL shutdown capable). Absolute max -0.3V to VIN. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | XLSEMI |+| Package | TO-263-5 |+| Category | PMIC |+| Pins | 5 |++## Ordering variants++- `XL2596S-5.0E1S-5.0E1`+- `XL2596S-5.0E1S-3.3E1`+- `XL2596S-5.0E1S-ADJE1`+- `XL2596S-5.0E1S-12E1`+- `XL2596S-5.0E1T-5.0E1`+- `XL2596S-5.0E1T-3.3E1`+- `XL2596S-5.0E1T-ADJE1`+- `XL2596S-5.0E1T-12E1`++## CAD (KiCad official)++- Symbol: `XL2596S-5.0E1`+- Footprint: `Package_TO_SOT_SMD:TO-263-2`+- 3D model: TO-263-5 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [XLSEMI datasheet](docs/xl2596s-5-0e1-datasheet.pdf) (14 pp, sha256 `c2a385c60d33d0a3`, 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/xl2596s-5-0e1-datasheet.pdf)

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