TLVH431BQDBVRQ1

@@ -0,0 +1,48 @@+# TLVH431BQDBVRQ1++**Texas Instruments** · Voltage Reference · SOT-23-5++TLVH431BQDBVRQ1 from Texas Instruments, in a SOT-23-5. 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 | REF | input | Reference (feedback) input. Internal error amplifier compares this pin against the 1.24 V bandgap reference; connect to the tap of an external R1/R2 divider from CATHODE to ANODE to program the regulated cathode voltage VKA = VREF x (1 + R1/R2) + Iref x R1. Input bias current Iref ~ 0.1 µA typical. |+| 2 | ANODE | passive | Anode terminal - the low-side (ground-side) terminal of the shunt regulator. All voltages in the datasheet (VKA, absolute-maximum ratings) are referenced to this pin. |+| 3 | CATHODE | passive | Cathode terminal - the high-side terminal of the shunt regulator. VKA operating range VREF (1.24 V) to 18 V; continuous cathode current 0.1 mA to 70 mA (absolute-max 80 mA). Behaves as a programmable shunt: draws current to hold VKA at the programmed voltage once REF reaches 1.24 V. |+| 4 | NC | unconnected | No internal connection. Leave floating or tie to ANODE per board convention; the TLVH431 is a 3-terminal device and the DBV (SOT-23-5) package exposes two unused pads. |+| 5 | NC | unconnected | No internal connection. Leave floating or tie to ANODE per board convention; the TLVH431 is a 3-terminal device and the DBV (SOT-23-5) package exposes two unused pads. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | SOT-23-5 |+| Category | Power Management (PMIC) |+| Pins | 5 |++## Ordering variants++Same part, different packaging or reel option.++- `TLVH431BQDBVRQ1`+- `TLVH431BQDBVRQ1DBZR`+- `TLVH431BQDBVRQ1DBZRQ1`++## CAD (KiCad official)++- Symbol: `TLVH431BQDBVRQ1`+- Footprint: `Package_TO_SOT_SMD:SOT-23-5`+- 3D model: SOT-23-5 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/tlvh431b-q1) (None pp, sha256 `29341c7b849a14b7`, 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/tlvh431bqdbvrq1-datasheet.pdf)

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