TX4310B

{
  "schema_version": 1,
  "type": "component",
  "slug": "tx4310b",
  "title": "TX4310B",
  "brief": "XDS DC-DC Converters, SOT-23-6. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "pmic",
    "tx4310b"
  ],
  "component": {
    "mpn": "TX4310B",
    "manufacturer": "XDS",
    "package": "SOT-23-6",
    "pin_count": 6,
    "category": "PMIC",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/63549011c5b96bb6200eaec5d6a51878.pdf",
    "parts": {
      "symbol": "tx4310b.kicad_sym",
      "footprint": "tx4310b.kicad_mod",
      "model_3d": "tx4310b-etched.glb",
      "model_3d_plain": "tx4310b.glb",
      "model_3d_step": "tx4310b-etched.step",
      "model_3d_step_plain": "tx4310b.step",
      "lbr": "tx4310b.lbr"
    },
    "distributor_links": {
      "lcsc": "C448640"
    },
    "pins": [
      {
        "number": "1",
        "name": "VOUT",
        "type": "power_out",
        "description": "Regulated charge-pump voltage output, nominally 3.3 V ±4% (3.17-3.43 V). Requires a low-ESR (<0.1 Ω) ceramic bypass capacitor of ≥10 µF to GND for stability and low output ripple. Can source up to ~250 mA at VIN=3 V; internally current-limited to ~300 mA under short-circuit."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground / power return. Should be tied to a solid ground plane; bypass capacitors on VDD and VOUT should return to this pin with the shortest possible traces to minimize switching noise at the 1.2 MHz pump frequency."
      },
      {
        "number": "3",
        "name": "EN",
        "type": "input",
        "description": "Active-high CMOS enable input with a threshold of ~0.8 V; driving EN low places the part in shutdown (all internal circuitry off, VOUT disconnected from VDD, IQ <1 µA). High-impedance CMOS input - MUST NOT be left floating; always drive with a valid logic level. Absolute-max VEN = -0.3 V to 6 V."
      },
      {
        "number": "4",
        "name": "C-",
        "type": "passive",
        "description": "Negative terminal of the flying (bootstrap) charge-pump capacitor. Connect between C- (pin 4) and C+ (pin 6) a low-ESR ceramic capacitor (≥2.2 µF recommended to achieve rated output current). Never use polar capacitors (tantalum/aluminum) here - the pin voltage can reverse during startup."
      },
      {
        "number": "5",
        "name": "VDD",
        "type": "power_in",
        "description": "Input supply pin, 1.8 V to 5 V operating range (absolute-max 6 V). Requires a low-ESR (<0.1 Ω) ceramic bypass capacitor of ≥10 µF to GND placed close to the pin to minimize input ripple. No-load supply current ~0.65 mA (typ, VIN=2.7 V); shutdown current <1 µA."
      },
      {
        "number": "6",
        "name": "C+",
        "type": "passive",
        "description": "Positive terminal of the flying (bootstrap) charge-pump capacitor. Connect a low-ESR ceramic capacitor (≥2.2 µF) between C+ (pin 6) and C- (pin 4). Do not use tantalum or aluminum electrolytics; polarity across this capacitor can reverse during startup."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/63549011c5b96bb6200eaec5d6a51878.pdf",
        "pages": 7,
        "sha256": "4874b5b97ef9b7e0",
        "source_tier": "lcsc"
      },
      "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"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -1.1375,
        -0.95
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOT-23-6@sha256:f341c73aac9dcb55",
      "mark": "drawn"
    },
    "models_3d": [
      {
        "file": "tx4310b.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.8,
          2.9,
          1.55
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "c9fe686b4d1b56927a41fa84a9bc1efb61d8a45a123a3db43bcaa05c2891d635",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "tx4310b-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.8,
          2.9,
          1.55
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "de36a0e24b92b9c1edcf6d726cca5e42a03339ce28bfb41c6c35e6e61ed51798",
        "checked": "2026-11-03",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "XDS",
      "Package": "SOT-23-6",
      "Category": "PMIC",
      "Pins": "6"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "tx4310b"
  ],
  "discovery_pitch": "TX4310B (XDS) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "tx4310b.kicad_sym",
    "tx4310b.kicad_mod",
    "tx4310b.glb",
    "tx4310b.step",
    "tx4310b-etched.step",
    "tx4310b.lbr",
    "docs/hero.png",
    "docs/tx4310b-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-25T13:18:03.986Z"
}