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LTL431ATLT1G
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LRC Voltage Reference, SOT-23. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+49@@ -0,0 +1,49 @@+# LTL431ATLT1G++**LRC** · Voltage Reference · SOT-23++LTL431ATLT1G 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) terminal. Sinks the regulated current when VKA >= Vref (~2.5V). Absolute maximum VKA = 36V; cathode current range -100 mA to +150 mA continuous; minimum cathode current for regulation IKA(min) typ 0.45 mA, max 1.0 mA. Dynamic impedance typ 0.15 Ω at f <= 1 kHz. |+| 2 | REF | input | Reference (R) input. High-impedance sense input to the internal error amplifier compared against the internal 2.5V bandgap reference (Vref typ 2.495-2.50V). Reference input current Iref typ 1.5 µA (max 4 µA) with R1 = 10 kΩ. Output is programmed via VO = (1 + R1/R2) * Vref. |+| 3 | ANODE | passive | Anode (A) terminal. Common/ground return for the reference; internal error amplifier and output transistor emitter reference. Typically tied to circuit ground in shunt-regulator configurations. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | LRC |+| Package | SOT-23 |+| Category | PMIC |+| Pins | 3 |++## Ordering variants++- `LTL431ATLT1GALT1G`+- `LTL431ATLT1GBLT1G`+- `LTL431ATLT1GAPLT1G`+- `LTL431ATLT1GBPLT1G`+- `LTL431ATLT1GATLT1G`+- `LTL431ATLT1GBTLT1G`+- `LTL431ATLT1GAPTLT1G`+- `LTL431ATLT1GBPTLT1G`++## CAD (KiCad official)++- Symbol: `LTL431ATLT1G`+- 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/ltl431atlt1g-datasheet.pdf) (5 pp, sha256 `f72860759bbf8e8d`, 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/ltl431atlt1g-datasheet.pdf)
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