TPS54315MPWPREP

{
  "schema_version": 1,
  "type": "component",
  "slug": "tps54315mpwprep",
  "title": "TPS54315MPWPREP",
  "brief": "Texas Instruments DC-DC Converters, HTSSOP-20-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "power supply chip",
    "tps54315mpwprep",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "TPS54315MPWPREP",
    "manufacturer": "Texas Instruments",
    "package": "HTSSOP-20-EP",
    "pin_count": 21,
    "category": "Power Supply Chip",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://www.ti.com/cn/lit/gpn/tps54316-ep",
    "parts": {
      "symbol": "tps54315mpwprep.kicad_sym",
      "footprint": "tps54315mpwprep.kicad_mod",
      "model_3d": "tps54315mpwprep-hero.glb",
      "model_3d_plain": "tps54315mpwprep.glb",
      "model_3d_step": "tps54315mpwprep-etched.step",
      "model_3d_step_plain": "tps54315mpwprep.step",
      "lbr": "tps54315mpwprep.lbr"
    },
    "distributor_links": {
      "lcsc": "C2073007",
      "digikey": "296-22453-2-ND",
      "mouser": "595-TPS54315MPWPREP"
    },
    "distributor_check": {
      "checked_at": "2026-10-12T04:14:28Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-22453-2-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-TPS54315MPWPREP",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground return for the compensation network/output divider, slow-start capacitor, VBIAS capacitor, RT resistor and FSEL pin; make the PowerPAD connection to AGND."
      },
      {
        "number": "2",
        "name": "VSENSE",
        "type": "input",
        "description": "Error amplifier inverting input that must connect directly to the output voltage sense point; power good trips when VSENSE is 10% below the reference."
      },
      {
        "number": "3",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection."
      },
      {
        "number": "4",
        "name": "PWRGD",
        "type": "output",
        "description": "Open-drain power good output that is high impedance when VSENSE ≥ 90% Vref and otherwise low, and is also low when SS/ENA is low or internal shutdown is active."
      },
      {
        "number": "5",
        "name": "BOOT",
        "type": "input",
        "description": "Bootstrap input; a 0.022-µF to 0.1-µF low-ESR capacitor connected from BOOT to PH generates the floating drive for the high-side FET driver."
      },
      {
        "number": "6",
        "name": "PH",
        "type": "bidirectional",
        "description": "Phase input/output at the junction of the internal high- and low-side power MOSFETs and the output inductor."
      },
      {
        "number": "7",
        "name": "PH",
        "type": "bidirectional",
        "description": "Phase input/output at the junction of the internal high- and low-side power MOSFETs and the output inductor."
      },
      {
        "number": "8",
        "name": "PH",
        "type": "bidirectional",
        "description": "Phase input/output at the junction of the internal high- and low-side power MOSFETs and the output inductor."
      },
      {
        "number": "9",
        "name": "PH",
        "type": "bidirectional",
        "description": "Phase input/output at the junction of the internal high- and low-side power MOSFETs and the output inductor."
      },
      {
        "number": "10",
        "name": "PH",
        "type": "bidirectional",
        "description": "Phase input/output at the junction of the internal high- and low-side power MOSFETs and the output inductor."
      },
      {
        "number": "11",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground and high-current return for the low-side driver and power MOSFET; connect with large copper areas to the input and output supply returns and the negative terminals of the input and output capacitors."
      },
      {
        "number": "12",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground and high-current return for the low-side driver and power MOSFET; connect with large copper areas to the input and output supply returns and the negative terminals of the input and output capacitors."
      },
      {
        "number": "13",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground and high-current return for the low-side driver and power MOSFET; connect with large copper areas to the input and output supply returns and the negative terminals of the input and output capacitors."
      },
      {
        "number": "14",
        "name": "VIN",
        "type": "power_in",
        "description": "Input supply for the power MOSFET switches and internal bias regulator; bypass to PGND close to the package with a high-quality, low-ESR 1-µF to 10-µF ceramic capacitor."
      },
      {
        "number": "15",
        "name": "VIN",
        "type": "power_in",
        "description": "Input supply for the power MOSFET switches and internal bias regulator; bypass to PGND close to the package with a high-quality, low-ESR 1-µF to 10-µF ceramic capacitor."
      },
      {
        "number": "16",
        "name": "VIN",
        "type": "power_in",
        "description": "Input supply for the power MOSFET switches and internal bias regulator; bypass to PGND close to the package with a high-quality, low-ESR 1-µF to 10-µF ceramic capacitor."
      },
      {
        "number": "17",
        "name": "VBIAS",
        "type": "power_out",
        "description": "Internal bias regulator output supplying the internal circuitry; bypass to AGND with a high-quality, low-ESR 0.1-µF to 1-µF ceramic capacitor."
      },
      {
        "number": "18",
        "name": "SS/ENA",
        "type": "bidirectional",
        "description": "Dual-function slow-start/enable pin that provides the logic input to enable or disable operation and the capacitor input that externally sets the start-up time."
      },
      {
        "number": "19",
        "name": "FSEL",
        "type": "input",
        "description": "Frequency select logic input that selects between two internally set switching frequencies."
      },
      {
        "number": "20",
        "name": "RT",
        "type": "input",
        "description": "Frequency setting resistor input; connect a resistor from RT to AGND to set the switching frequency fs."
      },
      {
        "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 PowerPAD exposed thermal pad is not given a pin number in the supplied text (the pin table lists; Pin types for BOOT, PH, SS/ENA, VBIAS and PWRGD are judgment calls mapped to KiCad ERC classes from ; The datasheet covers six variants (TPS54311-EP to TPS54316-EP) that share this pinout; the pinout ab",
          "exposed pad 21 added from the footprint"
        ],
        "pages_sent": 7,
        "cost_usd": 0.0605,
        "at": "2026-10-12T04:14:01"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/tps54316-ep",
        "pages": 22,
        "sha256": "33d2837b152fe8e7",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 21,
        "described": 21,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
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        "checked": "2026-10-12",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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      {
        "file": "tps54315mpwprep-etched.step",
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      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "HTSSOP-20-EP",
      "Category": "Power Supply Chip",
      "Pins": "21"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "33d2837b152fe8e7",
      "rows": [
        {
          "name": "Input voltage range",
          "symbol": "VI",
          "kind": "recommended_operating",
          "unit": "V",
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        {
          "name": "Operating junction temperature",
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          "min": -55,
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        {
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        {
          "name": "Input voltage range, RT",
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        },
        {
          "name": "Input voltage range, VSENSE",
          "symbol": "VI",
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          "unit": "V",
          "min": -0.3,
          "typ": null,
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        },
        {
          "name": "Input voltage range, BOOT",
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          "name": "Output voltage range, VBIAS, PWRGD, COMP",
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        {
          "name": "Output voltage range, PH",
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          "typ": null,
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          "conditions": "",
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        },
        {
          "name": "Source current, COMP, VBIAS",
          "symbol": "IO",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
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        {
          "name": "Source current, PH",
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          "unit": "A",
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        },
        {
          "name": "Sink current, COMP",
          "symbol": "IO",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
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          "conditions": "",
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        },
        {
          "name": "Sink current, SS/ENA, PWRGD",
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          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 10,
          "conditions": "",
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        },
        {
          "name": "Voltage differential AGND to PGND",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 0.3,
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        },
        {
          "name": "Operating virtual junction temperature range",
          "symbol": "TJ",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -55,
          "typ": null,
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          "conditions": "",
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        },
        {
          "name": "Storage temperature",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Lead temperature",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 300,
          "conditions": "1.6 mm (1/16 in) from case for 10 s",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "VIN input voltage range",
          "symbol": "VI",
          "kind": "electrical",
          "unit": "V",
          "min": 3,
          "typ": null,
          "max": 6,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Quiescent current",
          "symbol": "",
          "kind": "electrical",
          "unit": "mA",
          "min": 6.2,
          "typ": null,
          "max": 9.6,
          "conditions": "fs = 350 kHz, FSEL ≤ 0.8 V, RT open",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Quiescent current",
          "symbol": "",
          "kind": "electrical",
          "unit": "mA",
          "min": 8.4,
          "typ": null,
          "max": 12.8,
          "conditions": "fs = 550 kHz, FSEL ≥ 2.5 V, Phase pin open, RT open",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Shutdown current",
          "symbol": "",
          "kind": "electrical",
          "unit": "mA",
          "min": 1,
          "typ": null,
          "max": 1.4,
          "conditions": "Shutdown, SS/ENA = 0 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "UVLO start threshold voltage",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 2.95,
          "typ": null,
          "max": 3,
          "conditions": "",
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        },
        {
          "name": "UVLO stop threshold voltage",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 2.7,
          "typ": null,
          "max": 2.8,
          "conditions": "",
          "source_page": 5,
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        },
        {
          "name": "Output voltage, VBIAS",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 2.7,
          "typ": 2.8,
          "max": 2.95,
          "conditions": "IVBIAS = 0",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output voltage tolerance (TPS54315, 2.5 V)",
          "symbol": "VO",
          "kind": "tolerance",
          "unit": "%",
          "min": -3,
          "typ": null,
          "max": 3,
          "conditions": "3 ≤ VIN ≤ 6 V, 0 ≤ IL ≤ 3 A, −55°C ≤ TJ ≤ 125°C",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Internally set free-running frequency",
          "symbol": "",
          "kind": "electrical",
          "unit": "kHz",
          "min": 255,
          "typ": 350,
          "max": 450,
          "conditions": "FSEL ≤ 0.8 V, RT open",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Internally set free-running frequency",
          "symbol": "",
          "kind": "electrical",
          "unit": "kHz",
          "min": 400,
          "typ": 550,
          "max": 700,
          "conditions": "FSEL ≥ 2.5 V, RT open",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Externally set free-running frequency",
          "symbol": "",
          "kind": "electrical",
          "unit": "kHz",
          "min": 252,
          "typ": 280,
          "max": 308,
          "conditions": "RT = 180 kΩ (1% resistor to AGND)",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Externally set free-running frequency",
          "symbol": "",
          "kind": "electrical",
          "unit": "kHz",
          "min": 290,
          "typ": 312,
          "max": 350,
          "conditions": "RT = 160 kΩ (1% resistor to AGND)",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Externally set free-running frequency",
          "symbol": "",
          "kind": "electrical",
          "unit": "kHz",
          "min": 663,
          "typ": 700,
          "max": 762,
          "conditions": "RT = 68 kΩ (1% resistor to AGND)",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Frequency range, FSEL",
          "symbol": "",
          "kind": "electrical",
          "unit": "kHz",
          "min": 330,
          "typ": null,
          "max": 700,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Error amplifier unity gain bandwidth",
          "symbol": "",
          "kind": "electrical",
          "unit": "MHz",
          "min": 3,
          "typ": null,
          "max": 5,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "PWM comparator propagation delay time",
          "symbol": "",
          "kind": "electrical",
          "unit": "ns",
          "min": 70,
          "typ": null,
          "max": 85,
          "conditions": "PWM comparator input to PH pin, 10-mV overdrive (excluding dead time)",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Enable threshold voltage, SS/ENA",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 0.82,
          "typ": 1.2,
          "max": 1.4,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Internal slow-start time",
          "symbol": "",
          "kind": "electrical",
          "unit": "ms",
          "min": 3.5,
          "typ": 4.5,
          "max": 5.4,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Charge current, SS/ENA",
          "symbol": "",
          "kind": "electrical",
          "unit": "µA",
          "min": 2.5,
          "typ": 5,
          "max": 8,
          "conditions": "SS/ENA = 0 V",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Discharge current, SS/ENA",
          "symbol": "",
          "kind": "electrical",
          "unit": "mA",
          "min": 1.2,
          "typ": 2.3,
          "max": 4,
          "conditions": "SS/ENA = 0.2 V, VI = 2.7 V",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Output saturation voltage, PWRGD",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 0.18,
          "typ": null,
          "max": 0.3,
          "conditions": "I(sink) = 2.5 mA",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Current limit trip point",
          "symbol": "",
          "kind": "electrical",
          "unit": "A",
          "min": 4,
          "typ": null,
          "max": 6.5,
          "conditions": "VI = 3 V, output shorted",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Thermal shutdown trip point",
          "symbol": "",
          "kind": "thermal",
          "unit": "°C",
          "min": 135,
          "typ": 150,
          "max": 165,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Power MOSFET switches rDS(on)",
          "symbol": "rDS(on)",
          "kind": "electrical",
          "unit": "mΩ",
          "min": 59,
          "typ": null,
          "max": 88,
          "conditions": "VI = 6 V",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Power MOSFET switches rDS(on)",
          "symbol": "rDS(on)",
          "kind": "electrical",
          "unit": "mΩ",
          "min": 85,
          "typ": null,
          "max": 136,
          "conditions": "VI = 3 V",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Output voltage, nominal (TPS54315)",
          "symbol": "VO",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 2.5,
          "max": null,
          "conditions": "TJ = 25°C, VIN = 5.0 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Thermal impedance, junction-to-ambient, 20-pin PWP with solder",
          "symbol": "",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 26,
          "max": null,
          "conditions": "Test board per footnote (2), with solder",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Thermal impedance, junction-to-ambient, 20-pin PWP without solder",
          "symbol": "",
          "kind": "thermal",
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