SPX3819M5-L-3-3

@@ -0,0 +1,55 @@+# SPX3819M5-L-3-3++**MaxLinear** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-5++SPX3819M5-L-3-3 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 range 2.5V to 16V (absolute max -20V to +20V). Should be decoupled with a 1µF ceramic capacitor to GND near the pin. Powers the regulator pass element and internal reference. |+| 2 | GND | power_in | Ground return for the regulator. Also the reference for output feedback and enable thresholds. Ground pin current is typically 90µA at 100µA load and ~6.5mA at 500mA load. |+| 3 | EN | input | Enable input, CMOS-compatible. Logic high (VIH ≥ 2.0V) enables the regulator; logic low (VIL ≤ 0.4V) or open shuts it down (near-zero quiescent current). Absolute-max input range -20V to +20V; recommended 0V to VIN. May be tied directly to VIN for always-on operation. |+| 4 | BYP | passive | Reference bypass pin (fixed-voltage variants such as this -3-3 option). Connect an optional 1nF-10nF ceramic capacitor from BYP to GND to reduce output noise to ~40µV RMS (10Hz-100kHz). Leave floating if low-noise operation is not required. On adjustable variants this pin functions as ADJ (feedback from an external divider); the -3-3 3.3V fixed part uses it as BYP only. |+| 5 | VOUT | power_out | Regulator output, 3.3V fixed, up to 500mA. Requires a minimum 1µF ceramic output capacitor to GND for stability. Dropout is typically 340mV at 500mA. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | MaxLinear |+| Package | SOT-23-5 |+| Category | PMIC |+| Pins | 5 |++## Ordering variants++- `SPX3819M5-L-3-3`+- `SPX3819M5-L-3-3/TR`+- `SPX3819M5-L-3-3SPX3819R2-L`+- `SPX3819M5-L-3-3SPX3819R2-L-1-2`+- `SPX3819M5-L-3-3SPX3819R2-L-1-8`+- `SPX3819M5-L-3-3SPX3819S-L`+- `SPX3819M5-L-3-3SPX3819S-L-1-2`+- `SPX3819M5-L-3-3SPX3819S-L-1-5`+- `SPX3819M5-L-3-3SPX3819S-L-1-8`+- `SPX3819M5-L-3-3SPX3819S-L-2-5`+- `SPX3819M5-L-3-3SPX3819S-L-3-3`+- `SPX3819M5-L-3-3SPX3819S-L-5-0`++## CAD (KiCad official)++- Symbol: `SPX3819M5-L-3-3`+- 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](https://datasheet.lcsc.com/datasheet/pdf/33444d20793c49818529bbaff7909153.pdf) (12 pp, sha256 `f2808357a4016e81`, retrieved 2026-08-17, tier: manufacturer)+- **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-3-3-datasheet.pdf)

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