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AN431AN-ATRG1
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Diodes Incorporated Voltage Reference, SOT-23. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+42@@ -0,0 +1,42 @@+# AN431AN-ATRG1++**Diodes Incorporated** · Voltage Reference · SOT-23++AN431AN-ATRG1 from Diodes Incorporated, 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 | input | Cathode (K). Current-sink terminal of the shunt regulator; regulates VKA (VREF≤VKA≤36 V) by sinking 1-100 mA (100 mA continuous max, ±150 mA absolute max). Off-state leakage ≤1 µA at VKA=36 V. |+| 2 | REF | input | Reference input. High-impedance sense pin compared internally against the 2.500 V bandgap reference; drive from an external divider between CATHODE and ANODE to program VKA=VREF·(1+R1/R2). Reference input current ≤4 µA typ, absolute max IREF=10 mA. |+| 3 | ANODE | power_in | Anode (A). Return terminal of the shunt regulator; typically tied to circuit ground. Sinks the combined cathode plus reference-input current. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Diodes Incorporated |+| Package | SOT-23 |+| Category | PMIC |+| Pins | 3 |++## Ordering variants++- `AN431AN-ATRG1ATRG1`++## CAD (KiCad official)++- Symbol: `AN431AN-ATRG1`+- 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:** [Diodes Incorporated datasheet](https://www.diodes.com/assets/Datasheets/AN431AN-ATRG1.pdf) (13 pp, sha256 `abb5965f39adbd33`, 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/an431an-atrg1-datasheet.pdf)
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