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Ray add symbol pin "6" for the exposed thermal pad: the footprint carries the pad and the symbol had none, so it reached no… 789b572
{
 "schema": "adom.pads/1",
 "slug": "lm2576sx-3-3",
 "footprint": "TO-263-5_TabPin6",
 "generated_from": {
  "footprint": "TO-263-5_TabPin6@sha256:77e8ff2d643255fc",
  "pins": "page.json:component.pins",
  "overrides": null
 },
 "pin1": {
  "pad": "1",
  "at": [
   -7.65,
   -3.4
  ],
  "corner": "top-left",
  "source": "silk-marker",
  "derived_from": "TO-263-5_TabPin6@sha256:77e8ff2d643255fc"
 },
 "pad_count": 6,
 "symbol_pins": [
  "1",
  "2",
  "3",
  "4",
  "5",
  "6"
 ],
 "paste_apertures": 4,
 "issues": [],
 "pads": [
  {
   "pad": "1",
   "kind": "smd",
   "shape": "roundrect",
   "at": [
    -7.65,
    -3.4
   ],
   "rot": 0.0,
   "size": [
    4.6,
    1.1
   ],
   "layers": [
    "F.Cu",
    "F.Mask",
    "F.Paste"
   ],
   "thermal": false,
   "pin": "1",
   "name": "Vin",
   "type": "power_in",
   "description": "Unregulated DC input supply. Recommended operating range 4.75V to 40V (absolute max 45V). Bypass locally with a low-ESR bulk capacitor (typ. 100µF) to ground.",
   "is_pin1": true,
   "source": {
    "geometry": "TO-263-5_TabPin6.kicad_mod",
    "meaning": "page.json:component.pins",
    "correspondence": "kicad: symbol pin number == pad name"
   }
  },
  {
   "pad": "2",
   "kind": "smd",
   "shape": "roundrect",
   "at": [
    -7.65,
    -1.7
   ],
   "rot": 0.0,
   "size": [
    4.6,
    1.1
   ],
   "layers": [
    "F.Cu",
    "F.Mask",
    "F.Paste"
   ],
   "thermal": false,
   "pin": "2",
   "name": "Output",
   "type": "output",
   "description": "Switching output (SW) from the internal 3A NPN power switch. Connects to the catch diode cathode and the output inductor of the buck converter. Absolute max -1V to +25V relative to ground.",
   "is_pin1": false,
   "source": {
    "geometry": "TO-263-5_TabPin6.kicad_mod",
    "meaning": "page.json:component.pins",
    "correspondence": "kicad: symbol pin number == pad name"
   }
  },
  {
   "pad": "3",
   "kind": "smd",
   "shape": "roundrect",
   "at": [
    -7.65,
    0.0
   ],
   "rot": 0.0,
   "size": [
    4.6,
    1.1
   ],
   "layers": [
    "F.Cu",
    "F.Mask",
    "F.Paste"
   ],
   "thermal": false,
   "pin": "3",
   "name": "GND",
   "type": "power_in",
   "description": "Device ground reference for control circuitry and return for the internal power switch. Tie directly to the ground plane.",
   "is_pin1": false,
   "source": {
    "geometry": "TO-263-5_TabPin6.kicad_mod",
    "meaning": "page.json:component.pins",
    "correspondence": "kicad: symbol pin number == pad name"
   }
  },
  {
   "pad": "4",
   "kind": "smd",
   "shape": "roundrect",
   "at": [
    -7.65,
    1.7
   ],
   "rot": 0.0,
   "size": [
    4.6,
    1.1
   ],
   "layers": [
    "F.Cu",
    "F.Mask",
    "F.Paste"
   ],
   "thermal": false,
   "pin": "4",
   "name": "Feedback",
   "type": "input",
   "description": "Output voltage sense input for the internal error amplifier. On the fixed 3.3V version, connect directly to the regulated output node; the internal divider sets Vout = 3.3V (±4%). Feedback bias current is typically 50nA.",
   "is_pin1": false,
   "source": {
    "geometry": "TO-263-5_TabPin6.kicad_mod",
    "meaning": "page.json:component.pins",
    "correspondence": "kicad: symbol pin number == pad name"
   }
  },
  {
   "pad": "5",
   "kind": "smd",
   "shape": "roundrect",
   "at": [
    -7.65,
    3.4
   ],
   "rot": 0.0,
   "size": [
    4.6,
    1.1
   ],
   "layers": [
    "F.Cu",
    "F.Mask",
    "F.Paste"
   ],
   "thermal": false,
   "pin": "5",
   "name": "Enable",
   "type": "input",
   "description": "ON/OFF shutdown control input. Logic LOW (<1.0V) or tied to GND enables the regulator; logic HIGH (>2.2V, up to 25V absolute max) forces the regulator into low-power standby (typ. 70µA). Input current typ. 12µA at 5V.",
   "is_pin1": false,
   "source": {
    "geometry": "TO-263-5_TabPin6.kicad_mod",
    "meaning": "page.json:component.pins",
    "correspondence": "kicad: symbol pin number == pad name"
   }
  },
  {
   "pad": "6",
   "kind": "smd",
   "shape": "roundrect",
   "at": [
    1.5,
    0.0
   ],
   "rot": 0.0,
   "size": [
    9.4,
    10.8
   ],
   "layers": [
    "F.Cu",
    "F.Mask"
   ],
   "thermal": false,
   "pin": "6",
   "name": "TAB",
   "type": "power_in",
   "description": "Exposed thermal pad. Present in the package land pattern; connect it per the manufacturer datasheet thermal recommendation. Added because the footprint carries this pad and the symbol had no pin for it.",
   "is_pin1": false,
   "source": {
    "geometry": "TO-263-5_TabPin6.kicad_mod",
    "meaning": "page.json:component.pins",
    "correspondence": "kicad: symbol pin number == pad name"
   }
  }
 ]
}