LM26420Q0XMH

{
  "slug": "lm26420q0xmh",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments DC-DC Converters, HTSSOP-20-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management (pmic)",
    "lm26420q0xmh",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
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    "lm26420q0xmh.step",
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  "component": {
    "mpn": "LM26420Q0XMH",
    "manufacturer": "Texas Instruments",
    "package": "HTSSOP-20-EP",
    "pin_count": 21,
    "category": "Power Management (PMIC)",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://www.ti.com/cn/lit/gpn/lm26420-q1",
    "parts": {
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      "lbr": "lm26420q0xmh.lbr"
    },
    "distributor_links": {
      "lcsc": "C2879361"
    },
    "distributor_check": {
      "checked_at": "2026-10-08T18:02:34Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VINC",
        "type": "power_in",
        "description": "Supply for the control circuit and the high- and low-side gate drivers; it must not be lower than VIND1,2 - VTH, and an RC filter to AGND (RF typically 1 to 10 ohm, CF 0.22 to 1 uF in X7R/X5R) is recommended."
      },
      {
        "number": "2",
        "name": "EN1",
        "type": "input",
        "description": "Enable input for buck converter 1 with logic-high enable (threshold about 1.04 V with 150 mV hysteresis); do not leave it floating or drive it above VIN + 0.3 V."
      },
      {
        "number": "3",
        "name": "VIND1",
        "type": "power_in",
        "description": "Input power supply for buck converter 1, operating over 3 V to 5.5 V with an absolute maximum of 7 V; place at least one 10 uF X7R/X5R ceramic capacitor next to each VIND pin."
      },
      {
        "number": "4",
        "name": "VIND1",
        "type": "power_in",
        "description": "Input power supply for buck converter 1, operating over 3 V to 5.5 V with an absolute maximum of 7 V; place at least one 10 uF X7R/X5R ceramic capacitor next to each VIND pin."
      },
      {
        "number": "5",
        "name": "SW1",
        "type": "power_out",
        "description": "Output switch node of buck converter 1 that connects to the inductor; absolute maximum voltage is -0.5 V to 7 V."
      },
      {
        "number": "6",
        "name": "PGND1",
        "type": "power_in",
        "description": "Power ground for buck converter 1, which should be kept close to the input capacitor ground and tied to the ground plane with at least two vias."
      },
      {
        "number": "7",
        "name": "PGND1",
        "type": "power_in",
        "description": "Power ground for buck converter 1, which should be kept close to the input capacitor ground and tied to the ground plane with at least two vias."
      },
      {
        "number": "8",
        "name": "FB1",
        "type": "input",
        "description": "Feedback input for buck converter 1 from the external resistor divider that sets VOUT (VREF 0.8 V, absolute maximum -0.5 V to 3 V); keep this high-impedance trace short."
      },
      {
        "number": "9",
        "name": "PG1",
        "type": "output",
        "description": "Open-drain power-good output for buck converter 1 that requires an external pull-up resistor (10 kohm to 100 kohm, 50 kohm recommended) and is high when FB is within the power-good window."
      },
      {
        "number": "10",
        "name": "DAP",
        "type": "passive",
        "description": "Die attach pad connection that should be tied to system ground for low thermal impedance, but this pin cannot be used as the main GND connection."
      },
      {
        "number": "11",
        "name": "DAP",
        "type": "passive",
        "description": "Die attach pad connection that should be tied to system ground for low thermal impedance, but this pin cannot be used as the main GND connection."
      },
      {
        "number": "12",
        "name": "PG2",
        "type": "output",
        "description": "Open-drain power-good output for buck converter 2 that requires an external pull-up resistor (10 kohm to 100 kohm) and is high when FB2 is within the power-good window."
      },
      {
        "number": "13",
        "name": "FB2",
        "type": "input",
        "description": "Feedback input for buck converter 2 from the external resistor divider that sets VOUT (VREF 0.8 V, absolute maximum -0.5 V to 3 V); keep this high-impedance trace short."
      },
      {
        "number": "14",
        "name": "PGND2",
        "type": "power_in",
        "description": "Power ground for buck converter 2, which should be kept close to the input capacitor ground and tied to the ground plane with at least two vias."
      },
      {
        "number": "15",
        "name": "PGND2",
        "type": "power_in",
        "description": "Power ground for buck converter 2, which should be kept close to the input capacitor ground and tied to the ground plane with at least two vias."
      },
      {
        "number": "16",
        "name": "SW2",
        "type": "power_out",
        "description": "Output switch node of buck converter 2 that connects to the inductor; absolute maximum voltage is -0.5 V to 7 V."
      },
      {
        "number": "17",
        "name": "VIND2",
        "type": "power_in",
        "description": "Input power supply for buck converter 2, operating over 3 V to 5.5 V with an absolute maximum of 7 V; place at least one 10 uF X7R/X5R ceramic capacitor next to each VIND pin."
      },
      {
        "number": "18",
        "name": "VIND2",
        "type": "power_in",
        "description": "Input power supply for buck converter 2, operating over 3 V to 5.5 V with an absolute maximum of 7 V; place at least one 10 uF X7R/X5R ceramic capacitor next to each VIND pin."
      },
      {
        "number": "19",
        "name": "EN2",
        "type": "input",
        "description": "Enable input for buck converter 2 with logic-high enable (threshold about 1.04 V with 150 mV hysteresis); do not leave it floating or drive it above VIN + 0.3 V."
      },
      {
        "number": "20",
        "name": "AGND",
        "type": "power_in",
        "description": "Signal ground; the bottom resistor of the feedback network should be placed as close as possible to this pin."
      },
      {
        "number": "21",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The HTSSOP-20 pinout is taken from Table 4-2 (page 4). Figure 4-2 is not machine-readable, so pin po; The datasheet lists pins 10, 11 and DAP together as one row. The exposed pad has no separate number,; Table 4-2 types PG1 and PG2 as G (ground). Functionally they are open-drain power-good outputs per S",
          "exposed pad 21 added from the footprint",
          "2/21 pins cited to the wrong page (name found elsewhere): ['10:DAP@p4', '11:DAP@p4']"
        ],
        "pages_sent": 28,
        "cost_usd": 0.143,
        "at": "2026-10-08T18:01:38"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/lm26420-q1",
        "pages": 47,
        "sha256": "b25d3310c3924b09",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 21,
        "described": 21,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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        "zmin_mm": 0.0,
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        "sha256": "1ee23298b452f13979652413c9ad2d3350cae383f9059452778d3bc92e04d9b2",
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}