ATL431BQDBZR

@@ -0,0 +1,44 @@+# ATL431BQDBZR++**Texas Instruments** · Voltage Reference · SOT-23++ATL431BQDBZR from Texas Instruments, 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 | Shunt current/voltage input (cathode of the internal shunt reference). Sinks the regulated shunt current; Vcathode is programmed by external divider tied to REF. Absolute max VKA = 40 V, IKA continuous -100 to 150 mA. |+| 2 | REF | input | Reference/threshold input, sensed relative to the common anode. Internal bandgap regulates so VREF ~= 2.5 V (2487-2512 mV for B-grade). Reference input current typ 30 nA (max 150 nA); absolute max I(ref) -0.05 to 10 mA. |+| 3 | ANODE | passive | Common pin, normally connected to ground. All voltages in the datasheet are referenced to ANODE. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | SOT-23 |+| Category | PMIC |+| Pins | 3 |++## Ordering variants++- `ATL431BQDBZR`+- `ATL431BQDBZRDBZT`++## CAD (KiCad official)++- Symbol: `ATL431BQDBZR`+- 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:** [Texas Instruments datasheet](https://www.ti.com/lit/ds/symlink/atl431bqdbzr.pdf) (31 pp, sha256 `ef107d8a8d5c2bab`, retrieved 2026-08-17, tier: manufacturer)+- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.+- **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/atl431bqdbzr-datasheet.pdf)

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