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TLVH431BQDBVRQ1
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Texas Instruments Voltage Reference, SOT-23-5. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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Symbol & Footprint
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Contents
README
markdownTLVH431BQDBVRQ1
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.
TLVH431BQDBVRQ1TLVH431BQDBVRQ1DBZRTLVH431BQDBVRQ1DBZRQ1
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, TA = 25°C | VREF | 1.234 | 1.24 | 1.246 | V | TA = 25°C, VKA = VREF, IK = 10 mA (see Figure 1) | 5 |
| Reference voltage, full temperature range | VREF | 1.221 | 1.265 | V | TA = full range (–40°C to 125°C), VKA = VREF, IK = 10 mA (see Figure 1) | 5 | |
| VREF deviation over full temperature range | VREF(dev) | 11 | 31 | mV | VKA = VREF, IK = 10 mA (see Figure 1) | 5 | |
| Ratio of VREF change to cathode voltage change | ΔVREF/ΔVKA | -1.5 | -2.7 | mV/V | IK = 10 mA, VK = VREF to 18 V (see Figure 2) | 5 | |
| Reference terminal current | Iref | 0.1 | 0.5 | μA | IK = 10 mA, R1 = 10 kΩ, R2 = open (see Figure 2) | 5 | |
| Iref deviation over full temperature range | Iref(dev) | 0.15 | 0.5 | μA | IK = 10 mA, R1 = 10 kΩ, R2 = open (see Figure 2) | 5 | |
| Minimum cathode current for regulation | IK(min) | 60 | 100 | μA | VKA = VREF (see Figure 1) | 5 | |
| Off-state cathode current | IK(off) | 0.02 | 0.1 | μA | VREF = 0, VKA = 18 V (see Figure 3) | 5 | |
| Dynamic impedance | /zKA/ | 0.25 | 0.4 | Ω | VKA = VREF, f ≤ 1 kHz, IK = 0.1 mA to 70 mA (see Figure 1) | 5 | |
| Cathode voltage (absolute maximum) | VKA | 20 | V | Voltage values with respect to the anode terminal | 3 | ||
| Cathode current range (absolute maximum) | IK | -25 | 80 | mA | 3 | ||
| Reference current range (absolute maximum) | Iref | -0.05 | 3 | mA | 3 | ||
| Operating virtual junction temperature (absolute maximum) | TJ | 150 | °C | 3 | |||
| Storage temperature range | Tstg | -65 | 150 | °C | 3 | ||
| Cathode voltage (recommended) | VKA | 18 | V | Minimum printed as VREF (1.24 V typ); no numeric minimum given | 3 | ||
| Cathode current, continuous (recommended) | IK | 0.1 | 70 | mA | Continuous | 3 | |
| Operating free-air temperature | TA | -40 | 125 | °C | 3 | ||
| Package thermal impedance | θJA | 206 | °C/W | Per JESD 51-7; listed in absolute maximum ratings table without MIN/TYP/MAX designation | 3 |
CAD (KiCad official)
- Symbol:
TLVH431BQDBVRQ1 - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files:
tlvh431bqdbvrq1-etched.step/tlvh431bqdbvrq1-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tlvh431bqdbvrq1.step/tlvh431bqdbvrq1.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (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).