component
WL2811EA-5
Public Unreviewedby Ray
WILLSEMI Will Semicon Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23-5L. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
Open in new tab ↗
Loads on click. Unloads when scrolled away or the tab is hidden.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads on click. Unloads when scrolled away or the tab is hidden.
PCB Footprint
Open full view ↗Loads on click. Unloads when scrolled away or the tab is hidden.
Datasheet
Open in new tab ↗Loads on click. Unloads when scrolled away or the tab is hidden.
README
markdownWL2811EA-5
WILLSEMI Will Semicon · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-5L
WL2811EA-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 | IN | power_in | Regulator input supply. Operating range 2 V to 5.5 V (absolute max -0.3 V to 6.5 V). Bypass to GND with a 1 µF ceramic capacitor placed close to the pin. |
| 2 | GND | power_in | Device ground / return for the regulator. Connect to the system ground plane with a low-impedance path. |
| 3 | EN | input | Enable input, active-high. VENH ≥ 1 V enables the regulator; VENL ≤ 0.4 V disables it (shutdown current < 1 µA). VEN range -0.3 V to VIN; typical IEN = 0.14 µA at VEN = 5.5 V. Do not leave floating. |
| 4 | FB | input | Feedback pin used to set the output voltage of the adjustable device. Internal reference Vfb = 0.8 V; for VOUT > 0.8 V connect an external divider (R1 = R2 × (VOUT/0.8 V − 1)) with a 22 pF feed-forward capacitor across R1. For VOUT = 0.8 V tie FB directly to OUT. |
| 5 | OUT | power_out | Regulated output. Delivers up to 300 mA with typical dropout 141 mV at 300 mA (VOUT = 3 V). Requires a 1 µF ceramic output capacitor for stability. Short-circuit protected (ISHORT ≈ 157 mA typ with 1 Ω to GND) with thermal-overload protection (TSD ≈ 166 °C). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | WILLSEMI Will Semicon |
| Package | SOT-23-5L |
| Category | PMIC |
| Pins | 5 |
Ordering variants
Same part, different packaging or reel option.
WL2811EA-5/TR
CAD (KiCad official)
- Symbol:
WL2811EA-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 (13 pp, sha256
1ffd64ce64e88317, 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).