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wl2803e28-5
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WILLSEMI Will Semicon Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23-5L. Datasheet-verified pinout, KiCad symbol/footprint/3D.
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README.mdadded+44@@ -0,0 +1,44 @@+# WL2803E28-5++**WILLSEMI Will Semicon** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-5L++WL2803E28-5 from WILLSEMI Will Semicon, 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 | VIN | power_in | Input supply pin, 2.5 V to 5.5 V operating range (absolute max -0.3 V to 6.5 V). Bypass to GND with a 4.7 µF ceramic capacitor placed close to the pin. |+| 2 | GND | power_in | Device ground reference for both the input supply and output regulation feedback path. |+| 3 | EN | input | Active-high enable input. VENH ≥ 1.2 V turns the regulator on; VENL ≤ 0.4 V forces shutdown (ISHDN ≈ 0.1 µA typ). Do not leave floating. |+| 4 | NC | unconnected | No internal connection. Leave floating or tie to GND for mechanical strain relief. |+| 5 | VOUT | power_out | Regulated 2.8 V output (WL2803E28-5), up to 500 mA continuous with 130 mV typical dropout. Requires a 4.7 µF ceramic output capacitor (≥10 µF recommended when VOUT < 2 V). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | WILLSEMI Will Semicon |+| Package | SOT-23-5L |+| Category | PMIC |+| Pins | 5 |++## Ordering variants++- `WL2803E28-5/TR`++## CAD (KiCad official)++- Symbol: `WL2803E28-5`+- 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:** [WILLSEMI Will Semicon datasheet](docs/wl2803e28-5-datasheet.pdf) (None pp, sha256 `9792bb099f4840d0`, retrieved 2026-08-17, tier: lcsc)+- **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/wl2803e28-5-datasheet.pdf)
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