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LR431APTLT1G
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LRC Voltage Reference, SOT-23. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+42@@ -0,0 +1,42 @@+# LR431APTLT1G++**LRC** · Voltage Reference · SOT-23++LR431APTLT1G from LRC, 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 | REF | input | Reference input. High-impedance sense input to the internal 2.5 V bandgap comparator. Connect to the mid-point of the external R1/R2 divider between cathode and anode; VKA = Vref × (1 + R1/R2) + Iref × R1. Iref typ 1.5 µA (max 4 µA). |+| 2 | K | passive | Cathode. Regulated shunt terminal; sinks 1-100 mA in the stable/regulating region. Absolute max VKA = 36 V, cathode current range -100 to +150 mA. Dynamic impedance ~0.2 Ω (typ) at f ≤ 1 kHz. |+| 3 | A | passive | Anode. Common/return terminal of the shunt regulator; normally tied to circuit ground (or to the low side of the sensed rail). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | LRC |+| Package | SOT-23 |+| Category | PMIC |+| Pins | 3 |++## Ordering variants++- `LR431APTLT1G`++## CAD (KiCad official)++- Symbol: `LR431APTLT1G`+- 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:** [LRC datasheet](docs/lr431aptlt1g-datasheet.pdf) (5 pp, sha256 `3a6bd98799907b53`, 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/lr431aptlt1g-datasheet.pdf)
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