TLVH431BQDBVRQ1

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    "subcategory": "Voltage Reference",
    "datasheet": "https://www.ti.com/cn/lit/gpn/tlvh431b-q1",
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      {
        "number": "1",
        "name": "REF",
        "type": "input",
        "description": "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."
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      {
        "number": "2",
        "name": "ANODE",
        "type": "passive",
        "description": "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."
      },
      {
        "number": "3",
        "name": "CATHODE",
        "type": "passive",
        "description": "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."
      },
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        "number": "4",
        "name": "NC",
        "type": "unconnected",
        "description": "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."
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  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "SOT-23-5",
      "Category": "Power Management (PMIC)",
      "Pins": "5"
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    "characteristics": {
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        {
          "name": "Reference voltage, TA = 25°C",
          "symbol": "VREF",
          "kind": "electrical",
          "unit": "V",
          "min": 1.234,
          "typ": 1.24,
          "max": 1.246,
          "conditions": "TA = 25°C, VKA = VREF, IK = 10 mA (see Figure 1)",
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        {
          "name": "Reference voltage, full temperature range",
          "symbol": "VREF",
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          "min": 1.221,
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          "max": 1.265,
          "conditions": "TA = full range (–40°C to 125°C), VKA = VREF, IK = 10 mA (see Figure 1)",
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        {
          "name": "VREF deviation over full temperature range",
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          "min": null,
          "typ": 11,
          "max": 31,
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        {
          "name": "Ratio of VREF change to cathode voltage change",
          "symbol": "ΔVREF/ΔVKA",
          "kind": "electrical",
          "unit": "mV/V",
          "min": null,
          "typ": -1.5,
          "max": -2.7,
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          "name": "Reference terminal current",
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          "unit": "μA",
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          "name": "Iref deviation over full temperature range",
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          "unit": "μA",
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          "typ": 0.15,
          "max": 0.5,
          "conditions": "IK = 10 mA, R1 = 10 kΩ, R2 = open (see Figure 2)",
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        },
        {
          "name": "Minimum cathode current for regulation",
          "symbol": "IK(min)",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 60,
          "max": 100,
          "conditions": "VKA = VREF (see Figure 1)",
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        },
        {
          "name": "Off-state cathode current",
          "symbol": "IK(off)",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 0.02,
          "max": 0.1,
          "conditions": "VREF = 0, VKA = 18 V (see Figure 3)",
          "source_page": 5,
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        },
        {
          "name": "Dynamic impedance",
          "symbol": "|zKA|",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": 0.25,
          "max": 0.4,
          "conditions": "VKA = VREF, f ≤ 1 kHz, IK = 0.1 mA to 70 mA (see Figure 1)",
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          "source": "datasheet"
        },
        {
          "name": "Cathode voltage (absolute maximum)",
          "symbol": "VKA",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 20,
          "conditions": "Voltage values with respect to the anode terminal",
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        {
          "name": "Cathode current range (absolute maximum)",
          "symbol": "IK",
          "kind": "absolute_maximum",
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          "min": -25,
          "typ": null,
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        {
          "name": "Reference current range (absolute maximum)",
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          "unit": "mA",
          "min": -0.05,
          "typ": null,
          "max": 3,
          "conditions": "",
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        },
        {
          "name": "Operating virtual junction temperature (absolute maximum)",
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          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
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          "max": 150,
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        {
          "name": "Storage temperature range",
          "symbol": "Tstg",
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          "unit": "°C",
          "min": -65,
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        {
          "name": "Cathode voltage (recommended)",
          "symbol": "VKA",
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          "conditions": "Minimum printed as VREF (1.24 V typ); no numeric minimum given",
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          "name": "Cathode current, continuous (recommended)",
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          "name": "Operating free-air temperature",
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          "typ": null,
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        {
          "name": "Package thermal impedance",
          "symbol": "θJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 206,
          "max": null,
          "conditions": "Per JESD 51-7; listed in absolute maximum ratings table without MIN/TYP/MAX designation",
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