component
BQ7790503PWR
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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"title": "BQ7790503PWR",
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"mpn": "BQ7790503PWR",
"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": "C2876983",
"digikey": "296-50990-2-ND",
"mouser": "595-BQ7790503PWR"
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"source": "Component Ocean /api/assign-pns",
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"pn": "296-50990-2-ND",
"status": "found",
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"pins": [
{
"number": "1",
"name": "VDD",
"type": "power_in",
"description": "Supply voltage input, recommended 3 V to 25 V, with an absolute maximum input of 36 V."
},
{
"number": "2",
"name": "AVDD",
"type": "power_out",
"description": "Analog supply output that should only be connected to a capacitor; its recommended range is 0 V to 3 V."
},
{
"number": "3",
"name": "VC5",
"type": "input",
"description": "Cell voltage sense input; the datasheet states VC5-VC4 must stay within 0 V to 5 V and that pin 3 must be connected to pin 4 only on the BQ77904."
},
{
"number": "4",
"name": "VC4",
"type": "input",
"description": "Cell voltage sense input with VC4-VC3 recommended between 0 V and 5 V."
},
{
"number": "5",
"name": "VC3",
"type": "input",
"description": "Cell voltage sense input with VC3-VC2 recommended between 0 V and 5 V."
},
{
"number": "6",
"name": "VC2",
"type": "input",
"description": "Cell voltage sense input with VC2-VC1 recommended between 0 V and 5 V."
},
{
"number": "7",
"name": "VC1",
"type": "input",
"description": "Cell voltage sense input with VC1 to VSS recommended between 0 V and 5 V."
},
{
"number": "8",
"name": "AVSS",
"type": "power_in",
"description": "Analog ground pin for the device."
},
{
"number": "9",
"name": "SRP",
"type": "input",
"description": "Current sense input connected to the battery side of the sense resistor, with recommended range -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 recommended range -0.2 V to 0.8 V."
},
{
"number": "11",
"name": "DSG",
"type": "output",
"description": "Discharge (DSG) FET driver output, rated 0 V to 16 V recommended and -0.3 V to 20 V absolute maximum with up to 1 mA output current."
},
{
"number": "12",
"name": "CHGU",
"type": "output",
"description": "CHG signal output for the upper device of a stack, feeding the CHG signal to the CTRC pin of the lower device, rated 0 V to 16 V recommended with up to 1 mA output current."
},
{
"number": "13",
"name": "CHG",
"type": "output",
"description": "Charge (CHG) FET driver output for a single device or the bottom device of a stack, rated 0 V to 16 V recommended with up to 1 mA output current."
},
{
"number": "14",
"name": "LD",
"type": "input",
"description": "PACK- load removal detection input, rated 0 V to 16 V recommended and -30 V to 20 V absolute maximum."
},
{
"number": "15",
"name": "TS",
"type": "input",
"description": "Thermistor measurement input, recommended 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, recommended 0 V to 3 V with absolute maximum -0.3 V to 3.6 V."
},
{
"number": "17",
"name": "CCFG",
"type": "input",
"description": "Cell series-configuration input, recommended 0 V to AVDD."
},
{
"number": "18",
"name": "CTRC",
"type": "input",
"description": "CHG and DSG override input, recommended 0 V to (VDD + 5) V."
},
{
"number": "19",
"name": "CTRD",
"type": "input",
"description": "CHG and DSG override input, recommended 0 V to (VDD + 5) V."
},
{
"number": "20",
"name": "DVSS",
"type": "power_in",
"description": "Digital ground pin for the device."
}
],
"provenance": {
"extractor": "extract_pins 0.3",
"factory_chain": {
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"extractor": "extract_pins 0.3",
"primary_model": "claude-haiku-5-5",
"primary_mode": "text",
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"consensus": "agreed",
"guards": "pin_guards 0.1: passed",
"guard_notes": [
"extractor flagged: Pin 2 AVDD is listed as type 'O' (output) in the datasheet pin table; mapped to KiCad power_out beca; The datasheet pin table says pin 3 (VC5) must be connected to pin 4 (VC4) only on the BQ77904. This ; The absolute maximum table lists CCFG under both the 36 V and the -0.3 to 3.6 V input groups. The re"
],
"pages_sent": 11,
"cost_usd": 0.0862,
"at": "2026-10-08T20:20:34"
},
"datasheet": {
"url": "https://www.ti.com/cn/lit/gpn/bq77905",
"pages": 48,
"sha256": "f04162b24e7e7c22",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 20,
"described": 20,
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"refuses_to_fabricate": true
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"metadata": {
"specs": {
"Manufacturer": "Texas Instruments",
"Package": "TSSOP-20",
"Category": "Power Management (PMIC)",
"Pins": "20"
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