SPX3819M5-L-1-8

@@ -0,0 +1,48 @@+# SPX3819M5-L-1-8++**MaxLinear** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-5++SPX3819M5-L-1-8 from MaxLinear, in a SOT-23-5. 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 input. Operating input range +2.5V to +16V (absolute max −20V to +20V). Bypass with a low-ESR input capacitor (typically ≥1µF). |+| 2 | GND | power_in | Device ground return. Typical ground pin current 90µA at IL=100µA, rising to ~6.5mA at IL=500mA. |+| 3 | EN | input | Enable input, CMOS-compatible. Logic high (VIH ≥ 2V) enables the regulator; logic low (VIL ≤ 0.4V) or open shuts it down. May be tied directly to VIN for always-on operation. Input current 0.01µA typ (2µA max at VIL, 3µA typ / 20µA max at VIH). |+| 4 | ADJ/BYP | input | Reference bypass pin on fixed-output versions (this 1.8V variant): connect an optional ~10nF capacitor to GND to significantly reduce output noise (down to ~40µVRMS with CBYP=1µF). Same pin serves as the ADJ feedback input on the adjustable variant, tied to a resistor divider from VOUT (VOUT = 1.235V × [1 + R1/R2]). |+| 5 | VOUT | power_out | Regulated output. Fixed 1.8V (±1% initial tolerance, temperature coefficient 57 ppm/°C typ). Delivers up to 500mA; current limit typ 800mA. Requires an output capacitor for stability (≥1µF tantalum or ≥2.2µF aluminum electrolytic recommended). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | MaxLinear |+| Package | SOT-23-5 |+| Category | PMIC |+| Pins | 5 |++## Ordering variants++- `SPX3819M5-L-1-8`+- `SPX3819M5-L-1-8/TR`+- `SPX3819M5-L-1-8SPX3819S-L-1-8`+- `SPX3819M5-L-1-8SPX3819S-L-1-8/TR`+- `SPX3819M5-L-1-8SPX3819R2-L-1-8`++## CAD (KiCad official)++- Symbol: `SPX3819M5-L-1-8`+- Footprint: `Package_TO_SOT_SMD:SOT-23-5`+- 3D model: SOT-23-5 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [MaxLinear datasheet](docs/spx3819m5-l-1-8-datasheet.pdf) (13 pp, sha256 `f5e32d1d3e36da8f`, 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/spx3819m5-l-1-8-datasheet.pdf)

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