component
BQ7790505PWR
Public Made by Adomby adom
Texas Instruments Battery Management, TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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"manufacturer": "Texas Instruments",
"package": "TSSOP-20",
"pin_count": 20,
"category": "Power Management (PMIC)",
"subcategory": "Battery Management",
"datasheet": "https://www.ti.com/cn/lit/gpn/bq77905",
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"lcsc": "C2876984",
"digikey": "296-50991-2-ND",
"mouser": "595-BQ7790505PWR"
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"source": "Component Ocean /api/assign-pns",
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"status": "found",
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"pins": [
{
"number": "1",
"name": "VDD",
"type": "power_in",
"description": "Supply voltage input with a recommended operating range of 3 V to 25 V."
},
{
"number": "2",
"name": "AVDD",
"type": "power_out",
"description": "Analog supply that should only be connected to a capacitor, with a recommended range of 0 V to 3 V."
},
{
"number": "3",
"name": "VC5",
"type": "input",
"description": "Cell voltage sense input with a recommended VC5-VC4 range of 0 V to 5 V; the datasheet requires pin 3 to be connected to pin 4 only on the BQ77904."
},
{
"number": "4",
"name": "VC4",
"type": "input",
"description": "Cell voltage sense input with a recommended VC5-VC4 and VC4-VC3 range of 0 V to 5 V."
},
{
"number": "5",
"name": "VC3",
"type": "input",
"description": "Cell voltage sense input with a recommended VC4-VC3 and VC3-VC2 range of 0 V to 5 V."
},
{
"number": "6",
"name": "VC2",
"type": "input",
"description": "Cell voltage sense input with a recommended VC3-VC2 and VC2-VC1 range of 0 V to 5 V."
},
{
"number": "7",
"name": "VC1",
"type": "input",
"description": "Cell voltage sense input with a recommended VC2-VC1 and VC1-VSS range of 0 V to 5 V."
},
{
"number": "8",
"name": "AVSS",
"type": "power_in",
"description": "Analog ground."
},
{
"number": "9",
"name": "SRP",
"type": "input",
"description": "Current sense input connected to the battery side of the sense resistor, with a recommended range of -0.2 V to 0.8 V."
},
{
"number": "10",
"name": "SRN",
"type": "input",
"description": "Current sense input connected to the PACK- side of the sense resistor, with a recommended range of -0.2 V to 0.8 V."
},
{
"number": "11",
"name": "DSG",
"type": "output",
"description": "Discharge FET driver output with a recommended output voltage range of 0 V to 16 V."
},
{
"number": "12",
"name": "CHGU",
"type": "output",
"description": "CHG FET signal for the upper device of a stack, feeding the CHG signal to the CTRC pin of the lower device, with a recommended output range of 0 V to 16 V."
},
{
"number": "13",
"name": "CHG",
"type": "output",
"description": "Charge FET driver for a single device or the bottom device of a stack, with a recommended output range of 0 V to 16 V."
},
{
"number": "14",
"name": "LD",
"type": "input",
"description": "PACK- load removal detection input with a recommended range of 0 V to 16 V."
},
{
"number": "15",
"name": "TS",
"type": "input",
"description": "Thermistor measurement input with a recommended range of 0 V to VTB; connect a 10-kΩ resistor to AVSS if the function is not used."
},
{
"number": "16",
"name": "VTB",
"type": "output",
"description": "Thermistor bias output with a recommended range of 0 V to 3 V."
},
{
"number": "17",
"name": "CCFG",
"type": "input",
"description": "Cell in series-configuration input with a recommended range of 0 V to AVDD."
},
{
"number": "18",
"name": "CTRC",
"type": "input",
"description": "CHG and DSG override input, receiving the CHGU signal from an upper device in a stack, with a recommended range of 0 V to (VDD + 5) V."
},
{
"number": "19",
"name": "CTRD",
"type": "input",
"description": "CHG and DSG override input with a recommended range of 0 V to (VDD + 5) V."
},
{
"number": "20",
"name": "DVSS",
"type": "power_in",
"description": "Digital ground."
}
],
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"primary_model": "claude-haiku-5-5",
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"consensus": "agreed",
"guards": "pin_guards 0.1: passed",
"guard_notes": [
"extractor flagged: AVDD is listed as type 'O' (output) on the datasheet pin table; it is mapped to power_out because it; The datasheet pin configuration and pin functions table cover the 20-pin PW TSSOP package, and the p"
],
"pages_sent": 11,
"cost_usd": 0.0865,
"at": "2026-10-08T17:19:11"
},
"datasheet": {
"url": "https://www.ti.com/cn/lit/gpn/bq77905",
"pages": 48,
"sha256": "f04162b24e7e7c22",
"source_tier": "lcsc"
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"cad": "KiCad official (CC-BY-SA 4.0)",
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"total": 20,
"described": 20,
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"metadata": {
"specs": {
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"Package": "TSSOP-20",
"Category": "Power Management (PMIC)",
"Pins": "20"
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