LR431ATLT1G

@@ -0,0 +1,49 @@+# LR431ATLT1G++**LRC** · Voltage Reference · SOT-23++LR431ATLT1G 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. Sense pin compared internally to the 2.495 V bandgap reference; drives the internal amplifier that controls the cathode shunt current. Typical reference input current 1.5 µA (Iref). |+| 2 | K | passive | Cathode. Shunt-regulator output terminal; sinks 1-100 mA in regulation with Vka ranging from Vref (~2.495 V) up to 36 V max. Off-state cathode current is 0.05 µA typ at Vka = 36 V, Vref = 0. |+| 3 | A | passive | Anode. Reference-side ground return for the shunt element; connects to the low side of the load and to the R1/R2 divider common node. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | LRC |+| Package | SOT-23 |+| Category | PMIC |+| Pins | 3 |++## Ordering variants++- `LR431ATLT1G`+- `LR431ATLT1GLR431BTLT1G`+- `LR431ATLT1GLR431APTLT1G`+- `LR431ATLT1GLR431BPTLT1G`+- `LR431ATLT1GLR431ALT1G`+- `LR431ATLT1GLR431BLT1G`+- `LR431ATLT1GLR431APLT1G`+- `LR431ATLT1GLR431BPLT1G`++## CAD (KiCad official)++- Symbol: `LR431ATLT1G`+- 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/lr431atlt1g-datasheet.pdf) (5 pp, sha256 `889e59d6aba7b3a0`, 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/lr431atlt1g-datasheet.pdf)

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