TPS61221

{
  "schema_version": 1,
  "type": "component",
  "slug": "tps61221",
  "title": "TPS61221",
  "brief": "TI low-input-voltage boost converter, SC70-6. Starts from 0.7 V, adjustable output, tiny. Datasheet-verified.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "power",
    "boost-converter",
    "switching-regulator",
    "dc-dc",
    "sc70-6",
    "texas-instruments"
  ],
  "component": {
    "mpn": "TPS61221",
    "manufacturer": "Texas Instruments",
    "package": "SC70-6",
    "pin_count": 6,
    "category": "Power Management",
    "subcategory": "Switching regulator (boost)",
    "datasheet": "https://www.ti.com/lit/ds/symlink/tps61221.pdf",
    "parts": {
      "symbol": "tps61221.kicad_sym",
      "footprint": "tps61221.kicad_mod",
      "model_3d": "tps61221-etched.glb",
      "model_3d_plain": "tps61221.glb",
      "model_3d_step": "tps61221-etched.step",
      "model_3d_step_plain": "tps61221.step",
      "lbr": "tps61221.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "VIN",
        "type": "power_in",
        "description": "Boost converter input voltage supply pin. Operating range 0.7 V to 5.5 V (startup guaranteed from 0.7 V with R_LOAD >= 150 ohm). Bypass locally with a 10 µF ceramic capacitor to GND."
      },
      {
        "number": "2",
        "name": "FB",
        "type": "input",
        "description": "Feedback input for the adjustable version. On this fixed-3.3 V TPS61221 variant this pin must be tied directly to VOUT (V_FB typical 500 mV on adjustable variant, I_FB <= 10 nA)."
      },
      {
        "number": "3",
        "name": "GND",
        "type": "power_in",
        "description": "Control-logic and power ground. Common return for input capacitor, output capacitor, and inductor current."
      },
      {
        "number": "4",
        "name": "VOUT",
        "type": "power_out",
        "description": "Boost converter regulated output. Fixed 3.3 V nominal (3.20 V min / 3.41 V max). Also senses output for the internal feedback divider and provides the pass-through path when the converter is shut down. Requires a 10 µF ceramic output capacitor."
      },
      {
        "number": "5",
        "name": "L",
        "type": "passive",
        "description": "Switching node / inductor connection. Ties to the free end of the boost inductor (typ. 4.7 µH); the other inductor terminal returns to VIN. Internal main (low-side) and rectifying (high-side) MOSFETs switch this node between GND and VOUT."
      },
      {
        "number": "6",
        "name": "EN",
        "type": "input",
        "description": "Enable input. Drive high to enable the converter, low to disable (pass-through mode from VIN to VOUT via the rectifying switch's body diode). Must be actively driven, do not leave floating. Thresholds: for V_IN <= 1.5 V, V_IL <= 0.2*V_IN, V_IH >= 0.8*V_IN; for V_IN > 1.5 V, V_IL <= 0.4 V, V_IH >= 1.2 V. I_EN <= 0.1 µA."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/tps61221.pdf",
        "pages": 28,
        "sha256": "ca17c38d6ed40a7a",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 6,
        "described": 6,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "tps61221.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.1,
          2.0,
          1.1
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "045cc95e18ee7a13d1623c3ce6604fc833049bdb4f952f68c26e3c5767d122e4",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "tps61221-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.1,
          2.0,
          1.1
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "39977c87d3cd217d829e1b69ff604c837eff38eed5c3aa7f3e56c9aa521d5bc8",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Type": "Boost (step-up) converter",
      "Input": "0.7-5.5 V (start-up from 0.7 V)",
      "Output": "Up to 5.5 V (adjustable)",
      "Quiescent current": "5.5 uA (typ)",
      "Light load": "Power-save mode",
      "Enable": "EN pin",
      "Package": "SC70-6"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "tps61221",
    "single cell boost",
    "low startup boost converter",
    "tiny boost regulator"
  ],
  "discovery_pitch": "TI TPS61221 low-input-voltage boost converter (SC70-6) with datasheet-verified pinout, KiCad symbol/footprint/3D, and full provenance.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "tps61221.kicad_sym",
    "tps61221.kicad_mod",
    "tps61221.glb",
    "tps61221.step",
    "tps61221.lbr",
    "docs/hero.png",
    "docs/tps61221-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "tps61221-etched.step"
  ],
  "variants": [
    {
      "mpn": "TPS61221DCKR (adjustable, SC70-6)",
      "kind": "different-part"
    },
    {
      "mpn": "TPS61222DCKR (fixed 3.3 V)",
      "kind": "unknown"
    },
    {
      "mpn": "TPS61220DCKR (fixed 1.8 V)",
      "kind": "unknown"
    }
  ]
}