component
BQ7790400PWR
Public Made by Adomby adom
Texas Instruments Battery Management ICs, TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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"brief": "Texas Instruments Battery Management ICs, TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
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"pins": [
{
"number": "1",
"name": "VDD",
"type": "power_in",
"description": "Supply voltage pin for the device."
},
{
"number": "2",
"name": "AVDD",
"type": "power_out",
"description": "Analog supply pin that should only be connected to a capacitor."
},
{
"number": "3",
"name": "VC5",
"type": "input",
"description": "Cell voltage sense input; pin 3 must be connected to pin 4 on the BQ77904 device."
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{
"number": "4",
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"type": "input",
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{
"number": "5",
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{
"number": "6",
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"description": "Cell voltage sense input."
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{
"number": "7",
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{
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{
"number": "9",
"name": "SRP",
"type": "input",
"description": "Current sense input connecting to the battery side of the sense resistor."
},
{
"number": "10",
"name": "SRN",
"type": "input",
"description": "Current sense input connecting to the PACK- side of the sense resistor."
},
{
"number": "11",
"name": "DSG",
"type": "output",
"description": "DSG FET driver output."
},
{
"number": "12",
"name": "CHGU",
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"description": "CHG FET signal output for the upper device of a stack; it feeds the CHG signal to the CTRC pin of the lower device."
},
{
"number": "13",
"name": "CHG",
"type": "output",
"description": "CHG FET driver output, used on a single device or on the bottom device of a stack configuration."
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{
"number": "14",
"name": "LD",
"type": "input",
"description": "PACK- load removal detection input."
},
{
"number": "15",
"name": "TS",
"type": "input",
"description": "Thermistor measurement input; connect a 10-kΩ resistor to AVSS if the function is not used."
},
{
"number": "16",
"name": "VTB",
"type": "output",
"description": "Thermistor bias output."
},
{
"number": "17",
"name": "CCFG",
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"description": "Cell in series-configuration input."
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{
"number": "18",
"name": "CTRC",
"type": "input",
"description": "CHG and DSG override input."
},
{
"number": "19",
"name": "CTRD",
"type": "input",
"description": "CHG and DSG override input."
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{
"number": "20",
"name": "DVSS",
"type": "power_in",
"description": "Digital ground."
}
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],
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"package_dims": {
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"Package": "TSSOP-20",
"Category": "Power Supply Chip",
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"name": "AVDD voltage",
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"name": "NORMAL mode current (bq77904/bq77905)",
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"name": "OV, UV detection accuracy",
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"unit": "mV",
"min": -10,
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"max": 10,
"conditions": "TA = 25°C, OV detection accuracy",
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"source": "datasheet"
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{
"name": "OV, UV detection accuracy",
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"conditions": "TA = 25°C, UV detection accuracy",
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{
"name": "OV, UV detection accuracy",
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{
"name": "OV, UV detection accuracy",
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"conditions": "TA = –40 to 85°C",
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{
"name": "OV hysteresis programmable threshold range",
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"min": 0,
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{
"name": "UV hysteresis programmable threshold range",
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"min": 200,
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{
"name": "Overtemperature in discharge programmable threshold (OTD)",
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"typ": 18.22,
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"conditions": "Threshold for 70°C",
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{
"name": "Overtemperature in discharge recovery (OTD)",
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"kind": "electrical",
"unit": "%VTB",
"min": 22.12,
"typ": 23.2,
"max": 24.24,
"conditions": "Recovery threshold at 60°C for when VOTD is at 70°C",
"source_page": 8,
"source": "datasheet"
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{
"name": "Overtemperature in charge programmable threshold (OTC)",
"symbol": "VOTC",
"kind": "electrical",
"unit": "%VTB",
"min": 29.15,
"typ": 29.38,
"max": 31.45,
"conditions": "Threshold for 50°C",
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{
"name": "Overtemperature in charge recovery (OTC)",
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"min": 36.18,
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"conditions": "Recovery threshold at 40°C when VOTD is at 50°C",
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{
"name": "Undertemperature in discharge programmable threshold (UTD)",
"symbol": "VUTD",
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{
"name": "Undertemperature in discharge recovery (UTD)",
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"min": 80.04,
"typ": 80.94,
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"conditions": "Recovery threshold at –10°C when VUTD is at –20°C",
"source_page": 8,
"source": "datasheet"
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{
"name": "Undertemperature in charge programmable threshold (UTC)",
"symbol": "VUTC",
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"min": 75.06,
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"conditions": "Threshold for –5°C",
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{
"name": "Undertemperature in charge recovery (UTC)",
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"min": 68.8,
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"conditions": "Recovery threshold at 5°C when VUTC is at –5°C",
"source_page": 8,
"source": "datasheet"
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{
"name": "Overcurrent discharge 1 programmable threshold range",
"symbol": "VOCD1",
"kind": "electrical",
"unit": "mV",
"min": -85,
"typ": null,
"max": -10,
"conditions": "(VSRP – VSRN)",
"source_page": 8,
"source": "datasheet"
},
{
"name": "Overcurrent discharge 2 programmable threshold range",
"symbol": "VOCD2",
"kind": "electrical",
"unit": "mV",
"min": -170,
"typ": null,
"max": -20,
"conditions": "(VSRP – VSRN)",
"source_page": 8,
"source": "datasheet"
},
{
"name": "Short circuit discharge programmable threshold range",
"symbol": "VSCD",
"kind": "electrical",
"unit": "mV",
"min": -340,
"typ": null,
"max": -40,
"conditions": "(VSRP – VSRN)",
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{
"name": "OCD1 detection accuracy at lower thresholds",
"symbol": "VCCAL",
"kind": "electrical",
"unit": "%",
"min": -30,
"typ": null,
"max": 30,
"conditions": "VOCD1 > –20 mV",
"source_page": 8,
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},
{
"name": "OCD1, OCD2, SCD detection accuracy",
"symbol": "VCCAH",
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"unit": "%",
"min": -20,
"typ": null,
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"conditions": "VOCD1 ≤ –20 mV; all OCD2 and SCD threshold ranges",
"source_page": 8,
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{
"name": "CHG/CHGU/DSG on voltage",
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"min": 11,
"typ": 12,
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"conditions": "VDD ≥ 12 V, CL = 10 nF",
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{
"name": "CHGU/DSG off resistance",
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{
"name": "Overvoltage detection delay time (2-s delay option)",
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{
"name": "Undervoltage detection delay time (2-s delay option)",
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{
"name": "Overtemperature charge detection delay time",
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{
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{
"name": "Undertemperature discharge detection delay time",
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{
"name": "Overcurrent 1 detection delay time (1420-ms delay option)",
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{
"name": "Overcurrent 2 detection delay time (350-ms delay option)",
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