component
LP3986-18B3F
Public Unreviewedby Ray
LOWPOWER Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownLP3986-18B3F
LOWPOWER · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23
LP3986-18B3F from LOWPOWER, in a SOT-23. 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 | GND | power_in | Ground return for the regulator. Connect to the system ground plane; the input and output decoupling capacitor return currents should share this node. |
| 2 | OUT | power_out | Regulated output pin, fixed 1.8V (for the -18 option) at up to 300mA. Requires a 2.2µF (low-ESR ceramic) output capacitor to ground for stability and transient response. |
| 3 | VIN | power_in | Unregulated power input, 2.5V to 6V operating range (7V absolute max). Bypass with a 2.2µF ceramic capacitor to GND located close to the pin. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | LOWPOWER |
| Package | SOT-23 |
| Category | PMIC |
| Pins | 3 |
Ordering variants
Same part, different packaging or reel option.
LP3986-18B3F
CAD (KiCad official)
- Symbol:
LP3986-18B3F - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: LOWPOWER datasheet (6 pp, sha256
1259a04b2fbed2df, 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).