LTL431ALT1G

@@ -0,0 +1,49 @@+# LTL431ALT1G++**LRC** · Voltage Reference · SOT-23++LTL431ALT1G 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 | CATHODE | passive | Cathode (K) of the shunt reference. Sinks the regulation current; Vka may range from Vref (~2.5 V) up to 36 V max with cathode current 1 mA to 100 mA (absolute max -100 to +150 mA). |+| 2 | REF | input | Reference input (R). High-impedance sense input to the internal error amplifier; regulates when V(REF) = Vref (~2.495 V typ). Typical bias current 1.5 uA (max 4 uA). |+| 3 | ANODE | passive | Anode (A) of the shunt reference. Common return terminal for cathode and reference currents; typically tied to circuit ground in shunt-regulator applications. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | LRC |+| Package | SOT-23 |+| Category | PMIC |+| Pins | 3 |++## Ordering variants++- `LTL431ALT1G`+- `LTL431ALT1GLTL431BLT1G`+- `LTL431ALT1GLTL431APLT1G`+- `LTL431ALT1GLTL431BPLT1G`+- `LTL431ALT1GLTL431ATLT1G`+- `LTL431ALT1GLTL431BTLT1G`+- `LTL431ALT1GLTL431APTLT1G`+- `LTL431ALT1GLTL431BPTLT1G`++## CAD (KiCad official)++- Symbol: `LTL431ALT1G`+- 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/ltl431alt1g-datasheet.pdf) (5 pp, sha256 `8d4aaa62f4bc7d35`, 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/ltl431alt1g-datasheet.pdf)

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