component
TL431BQDBZRG4
Public Made by Adomby adom
Texas Instruments Voltage References, SOT-23-3. Pinout reviewed by a person against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+40@@ -0,0 +1,40 @@+# TL431BQDBZRG4++**Texas Instruments** · Voltage References · SOT-23-3++TL431BQDBZRG4 from Texas Instruments, in a SOT-23-3. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | REF | input | Reference voltage input compared against 2.5V internal threshold; controls regulated output voltage with input current range 2-4µA typical. |+| 2 | CATHODE | output | Regulated output terminal maintaining Vref to 36V; sinks 1-100mA continuous cathode current for parallel voltage regulation. |+| 3 | ANODE | power_in | Common ground return reference terminal; all voltages referenced to this pin at circuit ground potential. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | SOT-23-3 |+| Category | Power Supply Chip |+| Pins | 3 |++## CAD (KiCad official)++- Symbol: `TL431BQDBZRG4`+- Footprint: `Package_TO_SOT_SMD:SOT-23-3`+- 3D model: SOT-23-3 (KiCad packages3D, STEP)+- 3D model files: `tl431bqdbzrg4-etched.step` / `tl431bqdbzrg4-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tl431bqdbzrg4.step` / `tl431bqdbzrg4.glb` are the bare package body.++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/tl431) (86 pp, sha256 `0eb18c491f5517a3`, retrieved 2026-09-29, tier: lcsc)+- **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/tl431bqdbzrg4-datasheet.pdf)
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