# TLVH431BIL5T

**STMicroelectronics** · Voltage Reference · SOT-23-5

TLVH431BIL5T from STMicroelectronics, in a SOT-23-5. 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 | NC | unconnected | No connection; not used internally per the SOT23-5L pin configuration. |
| 2 | NC | unconnected | No connection; not used internally per the SOT23-5L pin configuration. |
| 3 | Cathode | passive | Cathode of the shunt reference, operating from Vref to 18 V (22 V absolute max) with 100 µA to 60 mA cathode current. |
| 4 | Ref | input | Reference input connected to the external resistor divider that sets the output voltage between 1.24 V and 18 V, with typical input current of 1.5 µA. |
| 5 | Anode | power_in | Anode of the shunt reference, normally connected to ground. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | SOT-23-5 |
| Category | Power Management (PMIC) |
| Pins | 5 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Reference voltage (TLVH431B, 0.25%) | Vref | 1.237 | 1.24 | 1.243 | V | VKA = Vref | 5 |
| Reference voltage variation over temperature (TLVH431B, 0.25%) | ∆Vref | -23.5 |  | 23.5 | mV | -40 °C < Tamb < +125 °C | 5 |
| Average temperature coefficient | ∆VKA/∆T |  | 30 | 100 | ppm/°C | VKA = Vref, -40 °C < Tamb < +125 °C | 5 |
| Minimum cathode current for regulation | Ikmin |  | 60 | 100 | µA | VKA = Vref | 5 |
| Minimum cathode current for regulation | Ikmin |  | 160 | 200 | µA | VKA = VKAmax | 5 |
| Minimum cathode current variation over temperature range | ∆Ikmin |  | 70 | 100 | µA | VKA = Vref, -40 °C < Tamb < +125 °C | 5 |
| Minimum cathode current variation over temperature range | ∆Ikmin |  | 100 | 200 | µA | VKA = VKAmax, -40 °C < Tamb < +125 °C | 5 |
| Reference input current | Iref |  | 1.5 | 2.5 | µA | R1 = 10 kΩ, R2 = ∞ | 5 |
| Reference current variation over temperature range | ∆Iref |  | 2.5 | 3.5 | µA | R1 = 10 kΩ, R2 = ∞, -40 °C < Tamb < +125 °C | 5 |
| Ratio of change in reference input voltage to change in cathode to anode voltage |  |  | -2 |  | mV/V | ∆VKA = 18 V to Vref | 5 |
| Ratio of change in reference input voltage to change in cathode to anode voltage (over temperature) |  |  |  | -2.5 | mV/V | ∆VKA = 18 V to Vref, -40 °C < Tamb < +125 °C | 5 |
| Off-state cathode current | Ioff |  | 10 | 80 | nA | VKA = VKAmax, Vref = GND | 5 |
| Off-state cathode current over temperature range | ∆Ioff |  | 1000 | 2000 | nA | VKA = VKAmax, Vref = GND, -40 °C < Tamb < +125 °C | 5 |
| Static impedance | RKA |  | 0.14 | 0.62 | Ω | VKA = Vref, ∆IK = 100 µA to 60 mA | 5 |
| Dynamic impedance | ZKA |  | 0.22 | 0.85 | Ω | VKA = Vref, ∆IK = 10 mA to 60 mA, f ≤ 1 kHz | 5 |
| Turn-on setting time | TON |  | 40 | 70 | µsec | VKA = Vref, ∆IK = 10 mA | 5 |
| Cathode to anode voltage | VKA |  |  | 22 | V |  | 4 |
| Continuous cathode current range | IK | -100 |  | 100 | mA |  | 4 |
| Reference input current range | IREF | -0.05 |  | 3 | mA |  | 4 |
| Storage temperature | TSTG | -65 |  | 150 | °C |  | 4 |
| ESD human body model (HBM) | ESD |  |  | 2 | kV | Human body model (HBM) | 4 |
| ESD machine model (MM) | ESD |  |  | 200 | V | Machine model (MM) | 4 |
| ESD charged device model | ESD |  |  | 1500 | V | Charged device model | 4 |
| Lead temperature (soldering) | TLEAD |  |  | 260 | °C | 10 sec | 4 |
| Max. junction temperature | TJ |  |  | 150 | °C |  | 4 |
| Cathode to anode voltage (operating) | VKA |  |  | 18 | V | Printed as 'Vref to 18 V'; lower limit is Vref, not a number | 4 |
| Minimum operating current | Ikmin | 100 |  |  | µA |  | 4 |
| Maximum operating current | Ikmax |  |  | 60 | mA |  | 4 |
| Operating free air temperature range | Toper | -40 |  | 125 | °C |  | 4 |
| Thermal resistance junction-ambient (SOT23-5L) | RthJA |  | 157 |  | °C/W | SOT23-5L package | 4 |
| Thermal resistance junction-case (SOT23-5L) | RthJC |  | 67 |  | °C/W | SOT23-5L package | 4 |

## CAD (KiCad official)

- Symbol: `TLVH431BIL5T`
- Footprint: `Package_TO_SOT_SMD:SOT-23-5`
- 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files: `tlvh431bil5t-etched.step` / `tlvh431bil5t-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tlvh431bil5t.step` / `tlvh431bil5t.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [STMicroelectronics datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588927006717456384) (15 pp, sha256 `0f9228f5a3cc7573`, retrieved 2026-10-12, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/tlvh431bil5t-datasheet.pdf)