CN3085

{
 "schema": "adom.pads/1",
 "slug": "cn3085",
 "footprint": "SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm",
 "generated_from": {
  "footprint": "SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm@sha256:5848244c5e72002e",
  "pins": "page.json:component.pins",
  "overrides": null
 },
 "pin1": {
  "pad": "1",
  "at": [
   -2.475,
   -1.905
  ],
  "corner": "top-left",
  "source": "silk-marker",
  "derived_from": "SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm@sha256:5848244c5e72002e"
 },
 "pad_count": 9,
 "symbol_pins": [
  "1",
  "2",
  "3",
  "4",
  "5",
  "6",
  "7",
  "8",
  "9"
 ],
 "paste_apertures": 4,
 "issues": [],
 "pads": [
  {
   "pad": "1",
   "kind": "smd",
   "shape": "roundrect",
   "at": [
    -2.475,
    -1.905
   ],
   "rot": 0.0,
   "size": [
    1.95,
    0.6
   ],
   "layers": [
    "F.Cu",
    "F.Mask",
    "F.Paste"
   ],
   "thermal": false,
   "pin": "1",
   "name": "TEMP",
   "type": "input",
   "description": "Battery temperature monitoring input. Connect to the output of an NTC divider tied to the battery. Charging is suspended (battery fault) when V(TEMP) is <45% or >80% of VIN. Tie TEMP to GND to disable temperature monitoring. Input current is <=0.5uA.",
   "is_pin1": true,
   "source": {
    "geometry": "SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm.kicad_mod",
    "meaning": "page.json:component.pins",
    "correspondence": "kicad: symbol pin number == pad name"
   }
  },
  {
   "pad": "2",
   "kind": "smd",
   "shape": "roundrect",
   "at": [
    -2.475,
    -0.635
   ],
   "rot": 0.0,
   "size": [
    1.95,
    0.6
   ],
   "layers": [
    "F.Cu",
    "F.Mask",
    "F.Paste"
   ],
   "thermal": false,
   "pin": "2",
   "name": "ISET",
   "type": "input",
   "description": "Constant-charge-current programming pin. Connect a resistor RISET from ISET to GND; ICH = 1218V / RISET. V(ISET) is regulated to 0.12V in trickle, 1.205V in CC, and 0.72V in maintenance modes.",
   "is_pin1": false,
   "source": {
    "geometry": "SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm.kicad_mod",
    "meaning": "page.json:component.pins",
    "correspondence": "kicad: symbol pin number == pad name"
   }
  },
  {
   "pad": "3",
   "kind": "smd",
   "shape": "roundrect",
   "at": [
    -2.475,
    0.635
   ],
   "rot": 0.0,
   "size": [
    1.95,
    0.6
   ],
   "layers": [
    "F.Cu",
    "F.Mask",
    "F.Paste"
   ],
   "thermal": false,
   "pin": "3",
   "name": "GND",
   "type": "power_in",
   "description": "Device ground / power return.",
   "is_pin1": false,
   "source": {
    "geometry": "SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm.kicad_mod",
    "meaning": "page.json:component.pins",
    "correspondence": "kicad: symbol pin number == pad name"
   }
  },
  {
   "pad": "4",
   "kind": "smd",
   "shape": "roundrect",
   "at": [
    -2.475,
    1.905
   ],
   "rot": 0.0,
   "size": [
    1.95,
    0.6
   ],
   "layers": [
    "F.Cu",
    "F.Mask",
    "F.Paste"
   ],
   "thermal": false,
   "pin": "4",
   "name": "VIN",
   "type": "power_in",
   "description": "Positive input supply, 3.8V to 6V typical (absolute max 6.5V). Powers the internal circuitry and the pass transistor to BAT. When VIN-VBAT < 10mV, CN3085 enters sleep mode with BAT current <3uA. UVLO threshold ~3.2V (rising).",
   "is_pin1": false,
   "source": {
    "geometry": "SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm.kicad_mod",
    "meaning": "page.json:component.pins",
    "correspondence": "kicad: symbol pin number == pad name"
   }
  },
  {
   "pad": "5",
   "kind": "smd",
   "shape": "roundrect",
   "at": [
    2.475,
    1.905
   ],
   "rot": 0.0,
   "size": [
    1.95,
    0.6
   ],
   "layers": [
    "F.Cu",
    "F.Mask",
    "F.Paste"
   ],
   "thermal": false,
   "pin": "5",
   "name": "BAT",
   "type": "power_out",
   "description": "Battery connection / charge output. Sources charge current (up to 1A) to the battery positive terminal via the internal PMOS pass transistor. In sleep mode BAT sink current is <3uA. Requires 4.7uF-10uF cap from BAT to GND for stability.",
   "is_pin1": false,
   "source": {
    "geometry": "SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm.kicad_mod",
    "meaning": "page.json:component.pins",
    "correspondence": "kicad: symbol pin number == pad name"
   }
  },
  {
   "pad": "6",
   "kind": "smd",
   "shape": "roundrect",
   "at": [
    2.475,
    0.635
   ],
   "rot": 0.0,
   "size": [
    1.95,
    0.6
   ],
   "layers": [
    "F.Cu",
    "F.Mask",
    "F.Paste"
   ],
   "thermal": false,
   "pin": "6",
   "name": "RC",
   "type": "passive",
   "description": "Maintenance-charge timer program pin. External R (R5, 20k-5M) and C (C1, >1nF) set the maintenance charge time: T(s) = 2654*R5*C1 + 4980*C1*1e3. When the timer expires, charging ends.",
   "is_pin1": false,
   "source": {
    "geometry": "SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm.kicad_mod",
    "meaning": "page.json:component.pins",
    "correspondence": "kicad: symbol pin number == pad name"
   }
  },
  {
   "pad": "7",
   "kind": "smd",
   "shape": "roundrect",
   "at": [
    2.475,
    -0.635
   ],
   "rot": 0.0,
   "size": [
    1.95,
    0.6
   ],
   "layers": [
    "F.Cu",
    "F.Mask",
    "F.Paste"
   ],
   "thermal": false,
   "pin": "7",
   "name": "CHRG",
   "type": "output",
   "description": "Open-drain charge status indicator (active-low). Pulled low during trickle, constant-current and maintenance charging; high-Z otherwise (including battery-fault or no-battery states). Sink capability 10mA at V(CHRG)=0.3V; leakage <=1uA at 5.5V. Typically drives an LED to VIN through a series resistor.",
   "is_pin1": false,
   "source": {
    "geometry": "SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm.kicad_mod",
    "meaning": "page.json:component.pins",
    "correspondence": "kicad: symbol pin number == pad name"
   }
  },
  {
   "pad": "8",
   "kind": "smd",
   "shape": "roundrect",
   "at": [
    2.475,
    -1.905
   ],
   "rot": 0.0,
   "size": [
    1.95,
    0.6
   ],
   "layers": [
    "F.Cu",
    "F.Mask",
    "F.Paste"
   ],
   "thermal": false,
   "pin": "8",
   "name": "FB",
   "type": "input",
   "description": "Battery-voltage feedback input. Battery voltage is fed back via R3/R4 divider such that VBAT = VFB * (1 + R3/R4). FB thresholds: VMAX=1.205V (CC ceiling), VCCT=1.083V (CC termination, ~90% of max), VPRE=0.843V (trickle threshold, ~70% of max), VRECH=1.052V (auto-recharge, ~87.3% of max).",
   "is_pin1": false,
   "source": {
    "geometry": "SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm.kicad_mod",
    "meaning": "page.json:component.pins",
    "correspondence": "kicad: symbol pin number == pad name"
   }
  },
  {
   "pad": "9",
   "kind": "smd",
   "shape": "rect",
   "at": [
    0.0,
    0.0
   ],
   "rot": 0.0,
   "size": [
    2.41,
    3.3
   ],
   "layers": [],
   "thermal": true,
   "pin": "9",
   "name": "EP",
   "type": "power_in",
   "description": "Exposed thermal pad on the underside of the SOP-8-PP package. Solder to the PCB ground copper plane for heat dissipation; required for full charge-current capability.",
   "is_pin1": false,
   "source": {
    "geometry": "SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm.kicad_mod",
    "meaning": "page.json:component.pins",
    "correspondence": "kicad: symbol pin number == pad name"
   }
  }
 ]
}