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AN431BN-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 @@+# AN431BN-ATRG1++**Diodes Incorporated** · Voltage Reference · SOT-23++AN431BN-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 | passive | Cathode (K) terminal of the shunt regulator. Sinks the regulated current when VREF pin reaches the internal 2.5 V reference. Operating cathode voltage 2.5 V to 36 V; cathode current 1 mA to 100 mA; absolute max VKA = 40 V. |+| 2 | REF | input | Reference input pin. Regulates the cathode so that VREF equals the internal 2.5 V bandgap. Typical reference input current 0.7 μA (max 4 μA); absolute max IREF = 10 mA. |+| 3 | ANODE | passive | Anode (A) terminal, the current return of the shunt regulator, typically tied to circuit ground in the standard divider-programmed shunt topology. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Diodes Incorporated |+| Package | SOT-23 |+| Category | PMIC |+| Pins | 3 |++## Ordering variants++- `AN431BN-ATRG1`++## CAD (KiCad official)++- Symbol: `AN431BN-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/AN431BN-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/an431bn-atrg1-datasheet.pdf)
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