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XT1861B502SR-G
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NATLINEAR DC-DC Converters, SOT-23-5L. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+50@@ -0,0 +1,50 @@+# XT1861B502SR-G++**NATLINEAR** · DC-DC Converters · SOT-23-5L++XT1861B502SR-G from NATLINEAR, in a SOT-23-5L. 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 | CE | input | Chip enable input. Drive high to enable the boost converter; drive low to disable. CE turn-on threshold typically ~0.6 V (decreasing with temperature per Fig.13). Must not be left floating. |+| 2 | VOUT | power_out | Regulated boost output. Factory-set to 5.0 V for the '50' voltage code of this MPN. Connect the output filter capacitor (COUT, 22 µF recommended) between VOUT and GND. Also serves as the internal high-side synchronous rectifier drain and the feedback sense node. |+| 3 | NC | unconnected | No internal connection. May be left floating or tied to GND for mechanical stability. Present only on the SOT23-5L variant. |+| 4 | GND | power_in | Device ground. Return for input capacitor, output capacitor, and CE reference. Keep the ground return path short and low-impedance for good ripple performance. |+| 5 | LX | power_out | Switch node. Connect the boost inductor (L, 10 µH recommended) between VIN and LX. Internal N-channel low-side switch and synchronous P-channel rectifier are tied here. Peak switch current limit 600 mA (min) / 800 mA (typ) / 1000 mA (max); absolute max 1000 mA. Absolute maximum LX voltage 6.5 V. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | NATLINEAR |+| Package | SOT-23-5L |+| Category | PMIC |+| Pins | 5 |++## Ordering variants++- `XT1861B502SR-GS`+- `XT1861B502SR-GM`+- `XT1861B502SR-GV`+- `XT1861B502SR-GP`+- `XT1861B502SR-GL`+- `XT1861B502SR-GT`++## CAD (KiCad official)++- Symbol: `XT1861B502SR-G`+- Footprint: `Package_TO_SOT_SMD:SOT-23-5`+- 3D model: SOT-23-5L (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [NATLINEAR datasheet](docs/xt1861b502sr-g-datasheet.pdf) (12 pp, sha256 `6aefb3994990857c`, retrieved 2026-08-17, tier: lcsc)+- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.+- **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/xt1861b502sr-g-datasheet.pdf)
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