TPS51220ARSNT

{
  "slug": "tps51220arsnt",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments Power Management - Specialized, QFN-32-EP(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management (pmic)",
    "tps51220arsnt",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
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    "path": "docs/hero.png"
  },
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    "tps51220arsnt.step",
    "tps51220arsnt.lbr",
    "docs/hero.png",
    "docs/tps51220arsnt-datasheet.pdf",
    "viewers/symbol.html",
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    "tps51220arsnt-hero.overlay.json"
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  "component": {
    "mpn": "TPS51220ARSNT",
    "manufacturer": "Texas Instruments",
    "package": "QFN-32-EP(4x4)",
    "pin_count": 33,
    "category": "Power Management (PMIC)",
    "subcategory": "Power Management - Specialized",
    "datasheet": "https://www.ti.com/cn/lit/gpn/tps51220a",
    "parts": {
      "symbol": "tps51220arsnt.kicad_sym",
      "footprint": "tps51220arsnt.kicad_mod",
      "model_3d": "tps51220arsnt-hero.glb",
      "model_3d_plain": "tps51220arsnt.glb",
      "model_3d_step": "tps51220arsnt-etched.step",
      "model_3d_step_plain": "tps51220arsnt.step",
      "lbr": "tps51220arsnt.lbr"
    },
    "distributor_links": {
      "lcsc": "C2658965",
      "digikey": "296-25541-2-ND",
      "mouser": "595-TPS51220ARSNT"
    },
    "distributor_check": {
      "checked_at": "2026-10-08T15:51:17Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-25541-2-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-TPS51220ARSNT",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "DRVH1",
        "type": "output",
        "description": "Channel 1 high-side MOSFET gate driver output, source 1.7 Ω and sink 1.0 Ω, SW-node-referenced floating driver with drive voltage equal to VBST-to-SW."
      },
      {
        "number": "2",
        "name": "V5SW",
        "type": "input",
        "description": "5-V switchover supply input; when EN1 is high, PGOOD1 indicates good and V5SW is above 4.8 V, VREG5 switches over to V5SW."
      },
      {
        "number": "3",
        "name": "RF",
        "type": "bidirectional",
        "description": "Frequency setting pin: connect a frequency-setting resistor to GND, or an external clock for synchronization; the fixed frequency is adjustable from 200 kHz to 1 MHz."
      },
      {
        "number": "4",
        "name": "EN1",
        "type": "input",
        "description": "Channel 1 SMPS enable; apply greater than 0.55 V and less than 6 V to turn on or leave floating, connect to GND to disable, and the adjustable soft-start capacitor attaches here."
      },
      {
        "number": "5",
        "name": "PGOOD1",
        "type": "output",
        "description": "Channel 1 powergood window comparator output; recommended applied voltage less than 6 V and recommended pull-up resistor 100 kΩ to 1 MΩ."
      },
      {
        "number": "6",
        "name": "SKIPSEL1",
        "type": "input",
        "description": "Channel 1 skip mode selection: GND selects continuous conduction, VREF2 auto skip, VREG3 OOA auto skip (max 7 skips, suitable for fsw < 400 kHz), VREG5 OOA auto skip (max 15 skips, suitable for fsw ≥ 400 kHz)."
      },
      {
        "number": "7",
        "name": "CSP1",
        "type": "bidirectional",
        "description": "Channel 1 current sense comparator positive input; an RC network with X5R or X7R ceramic capacitor extracts the DCR voltage drop, 0.1 µF suggested as a starting value."
      },
      {
        "number": "8",
        "name": "CSN1",
        "type": "input",
        "description": "Channel 1 current sense comparator negative input, also the supply for the current sense circuit at 5 V or higher output settings and the output discharge terminal."
      },
      {
        "number": "9",
        "name": "VFB1",
        "type": "input",
        "description": "Channel 1 SMPS voltage feedback input, connected to the feedback resistor divider and referred to signal GND; regulation voltage 1.000 V nominal."
      },
      {
        "number": "10",
        "name": "COMP1",
        "type": "input",
        "description": "Channel 1 loop compensation pin for current mode (error amplifier output), connect R (and C if required) to VREF2; in D-CAP mode, R to VREF2 sets ramp compensation, 10 kΩ suggested (6 kΩ to 20 kΩ)."
      },
      {
        "number": "11",
        "name": "FUNC",
        "type": "input",
        "description": "Control architecture and OVP selection: GND for current mode with OVP enabled, VREF2 for D-CAP mode with OVP disabled, VREG3 for D-CAP mode with OVP enabled, VREG5 for current mode with OVP disabled."
      },
      {
        "number": "12",
        "name": "EN",
        "type": "input",
        "description": "VREF2 and VREG5 linear regulator enable; apply greater than 1.2 V and less than 6 V to turn on, connect to GND to disable."
      },
      {
        "number": "13",
        "name": "VREF2",
        "type": "output",
        "description": "2-V reference output, to be bypassed to signal GND with 0.22 µF of ceramic capacitance."
      },
      {
        "number": "14",
        "name": "TRIP",
        "type": "input",
        "description": "Overcurrent trip level and discharge mode selection: GND gives V(OCL-ULV) with discharge on, VREF2 gives V(OCL-ULV) with discharge off, VREG3 gives V(OCL-LV) with discharge off, VREG5 gives V(OCL-LV) with discharge on."
      },
      {
        "number": "15",
        "name": "COMP2",
        "type": "input",
        "description": "Channel 2 loop compensation pin for current mode (error amplifier output), connect R (and C if required) to VREF2; in D-CAP mode, R to VREF2 sets ramp compensation, 10 kΩ suggested (6 kΩ to 20 kΩ)."
      },
      {
        "number": "16",
        "name": "VFB2",
        "type": "input",
        "description": "Channel 2 SMPS voltage feedback input, connected to the feedback resistor divider and referred to signal GND."
      },
      {
        "number": "17",
        "name": "CSN2",
        "type": "input",
        "description": "Channel 2 current sense comparator negative input, also the supply for the current sense circuit at 5 V or higher output settings and the output discharge terminal."
      },
      {
        "number": "18",
        "name": "CSP2",
        "type": "bidirectional",
        "description": "Channel 2 current sense comparator positive input; an RC network with X5R or X7R ceramic capacitor extracts the DCR voltage drop, 0.1 µF suggested as a starting value."
      },
      {
        "number": "19",
        "name": "SKIPSEL2",
        "type": "input",
        "description": "Channel 2 skip mode selection: GND selects continuous conduction, VREF2 auto skip, VREG3 OOA auto skip (max 7 skips, suitable for fsw < 400 kHz), VREG5 OOA auto skip (max 15 skips, suitable for fsw ≥ 400 kHz)."
      },
      {
        "number": "20",
        "name": "PGOOD2",
        "type": "output",
        "description": "Channel 2 powergood window comparator output; recommended applied voltage less than 6 V and recommended pull-up resistor 100 kΩ to 1 MΩ."
      },
      {
        "number": "21",
        "name": "EN2",
        "type": "input",
        "description": "Channel 2 SMPS enable; apply greater than 0.55 V and less than 6 V to turn on or leave floating, connect to GND to disable, and the adjustable soft-start capacitor attaches here."
      },
      {
        "number": "22",
        "name": "VREG3",
        "type": "output",
        "description": "Always-alive 3.3-V, 10-mA low-dropout linear regulator output, bypass to signal GND with more than 1 µF ceramic; runs from VIN or from VREG5 when switched over to V5SW."
      },
      {
        "number": "23",
        "name": "VIN",
        "type": "power_in",
        "description": "Supply input for the 5-V and 3.3-V linear regulators, typically connected to VBAT; input range 4.5 V to 32 V."
      },
      {
        "number": "24",
        "name": "DRVH2",
        "type": "output",
        "description": "Channel 2 high-side MOSFET gate driver output, source 1.7 Ω and sink 1.0 Ω, SW-node-referenced floating driver with drive voltage equal to VBST-to-SW."
      },
      {
        "number": "25",
        "name": "SW2",
        "type": "bidirectional",
        "description": "Channel 2 high-side MOSFET gate driver return (switch node), referenced for the floating high-side driver."
      },
      {
        "number": "26",
        "name": "VBST2",
        "type": "input",
        "description": "Channel 2 bootstrap supply input for the high-side N-channel FET driver; connect a capacitor of 0.1 µF or greater from this pin to SW2, an additional Schottky diode from VREG5 is optional."
      },
      {
        "number": "27",
        "name": "DRVL2",
        "type": "output",
        "description": "Channel 2 low-side MOSFET gate driver output, source 1.3 Ω and sink 0.7 Ω, GND-referenced driver."
      },
      {
        "number": "28",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "29",
        "name": "VREG5",
        "type": "output",
        "description": "5-V, 100-mA low-dropout linear regulator output, bypass to power GND with 10 µF ceramic; runs from VIN and switches over to V5SW when 4.8 V or above is provided."
      },
      {
        "number": "30",
        "name": "DRVL1",
        "type": "output",
        "description": "Channel 1 low-side MOSFET gate driver output, source 1.3 Ω and sink 0.7 Ω, GND-referenced driver."
      },
      {
        "number": "31",
        "name": "VBST1",
        "type": "input",
        "description": "Channel 1 bootstrap supply input for the high-side N-channel FET driver; connect a capacitor of 0.1 µF or greater from this pin to SW1, an additional Schottky diode from VREG5 is optional."
      },
      {
        "number": "32",
        "name": "SW1",
        "type": "bidirectional",
        "description": "Channel 1 high-side MOSFET gate driver return (switch node), referenced for the floating high-side driver."
      },
      {
        "number": "33",
        "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 datasheet shows an exposed PowerPAD on the QFN-32 package but gives no pin number for it in the ; The I/O column of the PIN FUNCTIONS table was partly lost in text extraction, so some pin types were; The RSN top-view drawing text in the extraction is scrambled, so the pin numbers come from the PIN F",
          "exposed pad 33 added from the footprint"
        ],
        "pages_sent": 11,
        "cost_usd": 0.1071,
        "at": "2026-10-08T15:51:02"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/tps51220a",
        "pages": 55,
        "sha256": "6e980b37451f3708",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 33,
        "described": 33,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
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        "seat": "z = 0",
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        "sha256": "7b482a511cdf2cf875c31931f9fea7f745b8dac2ea6203531cd6604f40a290cb",
        "checked": "2026-10-08",
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  }
}