component
TPS27SA08CPWPR
Public Made by Adomby adom
Texas Instruments Power Distribution Switches, HTSSOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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"title": "TPS27SA08CPWPR",
"brief": "Texas Instruments Power Distribution Switches, HTSSOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
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"package": "HTSSOP-16",
"pin_count": 17,
"category": "Power Management (PMIC)",
"subcategory": "Power Distribution Switches",
"datasheet": "https://www.ti.com/cn/lit/ds/symlink/tps27sa08.pdf",
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"digikey": "296-TPS27SA08CPWPRTR-ND"
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"pins": [
{
"number": "1",
"name": "GND",
"type": "power_in",
"description": "Device ground pin; with a ground protection network (DGND/RGND) the device ground is offset from the microcontroller ground."
},
{
"number": "2",
"name": "SNS",
"type": "output",
"description": "Analog sense output that carries a current proportional to load current, supply voltage, or device temperature (selected by SEL1/SEL2) or the fault level ISNSFH; it has an internal clamp at VSNSclamp (5.9 V typ) and must be terminated to GND through 1 kΩ if unused."
},
{
"number": "3",
"name": "LATCH",
"type": "input",
"description": "Sets the fault-handling behavior to latched or automatic retry, with VIL max 0.8 V and VIH min 2 V; leave floating or tie to GND through RPROT for auto-retry."
},
{
"number": "4",
"name": "EN",
"type": "input",
"description": "Active-high switch control input with VIL max 0.8 V, VIH min 2 V, and an internal 1 MΩ pull-down; the recommended input voltage range is -1 V to 5.5 V."
},
{
"number": "5",
"name": "ST",
"type": "output",
"description": "Open-drain, active-low switch diagnostic feedback that is high-impedance without fault and pulled low on fault, with VOL max 0.4 V at 1 mA."
},
{
"number": "6",
"name": "VOUT",
"type": "output",
"description": "Switch output; all six VOUT pins (6 to 11) must be shorted together on the PCB and routed symmetrically to the power FET."
},
{
"number": "7",
"name": "VOUT",
"type": "output",
"description": "Switch output; all six VOUT pins (6 to 11) must be shorted together on the PCB and routed symmetrically to the power FET."
},
{
"number": "8",
"name": "VOUT",
"type": "output",
"description": "Switch output; all six VOUT pins (6 to 11) must be shorted together on the PCB and routed symmetrically to the power FET."
},
{
"number": "9",
"name": "VOUT",
"type": "output",
"description": "Switch output; all six VOUT pins (6 to 11) must be shorted together on the PCB and routed symmetrically to the power FET."
},
{
"number": "10",
"name": "VOUT",
"type": "output",
"description": "Switch output; all six VOUT pins (6 to 11) must be shorted together on the PCB and routed symmetrically to the power FET."
},
{
"number": "11",
"name": "VOUT",
"type": "output",
"description": "Switch output; all six VOUT pins (6 to 11) must be shorted together on the PCB and routed symmetrically to the power FET."
},
{
"number": "12",
"name": "NC",
"type": "unconnected",
"description": "No internal connection."
},
{
"number": "13",
"name": "NC",
"type": "unconnected",
"description": "No internal connection."
},
{
"number": "14",
"name": "SEL1",
"type": "input",
"description": "Diagnostic select 1 that chooses between VBB and TJ sensing; if unused, leave floating or tie to GND through RPROT, which leaves only load diagnostics available."
},
{
"number": "15",
"name": "SEL2",
"type": "input",
"description": "Diagnostic select 2; when held at 0 V the VBB measurement diagnostic is unavailable, and if unused it should be tied to GND through RPROT."
},
{
"number": "16",
"name": "DIA_EN",
"type": "input",
"description": "Active-high diagnostic enable; when unused, analog sensing, open-load and short-to-supply diagnostics are unavailable, and it should be left floating or tied to GND through RPROT."
},
{
"number": "17",
"name": "EP",
"type": "passive",
"description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
}
],
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"guards": "pin_guards 0.1: passed",
"guard_notes": [
"extractor flagged: VBB is the power input on the exposed thermal pad (外露散热焊盘), which has no printed pin number in the d; The pin figure text extraction lists 'VBB' before the pin numbers, which could be misread as pin 1. ; Recommended unused-pin connections and their effects are described in Table 5-2 on page 5 (continuat",
"exposed pad 17 added from the footprint"
],
"pages_sent": 40,
"cost_usd": 0.1568,
"at": "2026-10-18T16:47:43"
},
"datasheet": {
"url": "https://www.ti.com/cn/lit/ds/symlink/tps27sa08.pdf",
"pages": 51,
"sha256": "a180e810c723eaed",
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"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
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"metadata": {
"specs": {
"Manufacturer": "Texas Instruments",
"Package": "HTSSOP-16",
"Category": "Power Management (PMIC)",
"Pins": "17"
},
"characteristics": {
"version": 1,
"source": "datasheet",
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"rows": [
{
"name": "Max continuous supply voltage",
"symbol": "VBB",
"kind": "absolute_maximum",
"unit": "V",
"min": null,
"typ": null,
"max": 36,
"conditions": "",
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{
"name": "Max supply voltage, long transient",
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"conditions": "duration < 300ms",
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},
{
"name": "Max transient voltage at supply input, VBB to IC GND",
"symbol": "VTR2",
"kind": "absolute_maximum",
"unit": "V",
"min": null,
"typ": null,
"max": 54,
"conditions": "",
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"source": "datasheet"
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{
"name": "Reverse supply voltage",
"symbol": "VRev",
"kind": "absolute_maximum",
"unit": "V",
"min": -36,
"typ": null,
"max": null,
"conditions": "VREV ≤ 3 min, GND network",
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{
"name": "Enable pin voltage",
"symbol": "VEN",
"kind": "absolute_maximum",
"unit": "V",
"min": -1,
"typ": null,
"max": 7,
"conditions": "",
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{
"name": "LATCH pin voltage",
"symbol": "VLATCH",
"kind": "absolute_maximum",
"unit": "V",
"min": -1,
"typ": null,
"max": 7,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Status pin voltage",
"symbol": "VST",
"kind": "absolute_maximum",
"unit": "V",
"min": -1,
"typ": null,
"max": 7,
"conditions": "",
"source_page": 6,
"source": "datasheet"
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{
"name": "Diagnostic enable pin voltage",
"symbol": "VDIA_EN",
"kind": "absolute_maximum",
"unit": "V",
"min": -1,
"typ": null,
"max": 7,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Sense pin voltage",
"symbol": "VSNS",
"kind": "absolute_maximum",
"unit": "V",
"min": -1,
"typ": null,
"max": 7,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Select pin voltage",
"symbol": "VSEL1, VSEL2",
"kind": "absolute_maximum",
"unit": "V",
"min": -1,
"typ": null,
"max": 7,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Reverse current flowing into GND",
"symbol": "IGND",
"kind": "absolute_maximum",
"unit": "mA",
"min": -50,
"typ": null,
"max": null,
"conditions": "VBB < 0V",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Max junction temperature",
"symbol": "TJ",
"kind": "absolute_maximum",
"unit": "°C",
"min": null,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Storage temperature",
"symbol": "Tstg",
"kind": "absolute_maximum",
"unit": "°C",
"min": -65,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Nominal supply voltage (recommended)",
"symbol": "VBB",
"kind": "recommended_operating",
"unit": "V",
"min": 8,
"typ": null,
"max": 36,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Enable voltage (recommended)",
"symbol": "VEN",
"kind": "recommended_operating",
"unit": "V",
"min": -1,
"typ": null,
"max": 5.5,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "LATCH voltage (recommended)",
"symbol": "VLATCH",
"kind": "recommended_operating",
"unit": "V",
"min": -1,
"typ": null,
"max": 5.5,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Diagnostic enable voltage (recommended)",
"symbol": "VDIA_EN",
"kind": "recommended_operating",
"unit": "V",
"min": -1,
"typ": null,
"max": 5.5,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Select voltage (recommended)",
"symbol": "VSEL1, VSEL2",
"kind": "recommended_operating",
"unit": "V",
"min": -1,
"typ": null,
"max": 5.5,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Status voltage (recommended)",
"symbol": "VST",
"kind": "recommended_operating",
"unit": "V",
"min": 0,
"typ": null,
"max": 5.5,
"conditions": "",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Sense voltage (recommended)",
"symbol": "VSNS",
"kind": "recommended_operating",
"unit": "V",
"min": -1,
"typ": null,
"max": null,
"conditions": "",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Continuous load current",
"symbol": "IMAX",
"kind": "recommended_operating",
"unit": "A",
"min": 0,
"typ": null,
"max": 10,
"conditions": "TA = 70°C",
"source_page": 7,
"source": "datasheet"
},
{
"name": "VDS clamp voltage",
"symbol": "VClamp",
"kind": "electrical",
"unit": "V",
"min": 40,
"typ": null,
"max": 58,
"conditions": "",
"source_page": 7,
"source": "datasheet"
},
{
"name": "VBB undervoltage lockout falling",
"symbol": "VUVLOF",
"kind": "electrical",
"unit": "V",
"min": 2.5,
"typ": null,
"max": 3,
"conditions": "",
"source_page": 7,
"source": "datasheet"
},
{
"name": "VBB undervoltage lockout rising",
"symbol": "VUVLOR",
"kind": "electrical",
"unit": "V",
"min": 2.5,
"typ": null,
"max": 3,
"conditions": "",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Output leakage current, 25°C",
"symbol": "IOUT_OFF",
"kind": "electrical",
"unit": "µA",
"min": null,
"typ": 0.01,
"max": 0.5,
"conditions": "VBB = 24V, TJ = 25°C, VEN = VDIA_EN = 0V, VOUT = 0V",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Current in diagnostic mode",
"symbol": "IDIA",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": 3,
"max": 6,
"conditions": "VBB = 24V, ISNS = 0mA, VEN = 0V, VDIA_EN = 5V, VOUT = 0V",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Quiescent current",
"symbol": "IQ",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": 2.4,
"max": 5.2,
"conditions": "VBB = 24V, VEN = 5V, VDIA_EN = 0V, IOUT = 0A, VSELX = 0V",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Current sense accuracy at 8A",
"symbol": "ISNSI",
"kind": "electrical",
"unit": "%",
"min": -5,
"typ": null,
"max": 5,
"conditions": "VEN = VDIA_EN = 5V, VSEL1 = VSEL2 = 0V, IOUT = 8A",
"source_page": 8,
"source": "datasheet"
},
{
"name": "Current sense accuracy at 3A",
"symbol": "ISNSI",
"kind": "electrical",
"unit": "%",
"min": -5,
"typ": null,
"max": 5,
"conditions": "VEN = VDIA_EN = 5V, VSEL1 = VSEL2 = 0V, IOUT = 3A",
"source_page": 8,
"source": "datasheet"
},
{
"name": "Current sense accuracy at 780mA",
"symbol": "ISNSI",
"kind": "electrical",
"unit": "%",
"min": -5,
"typ": null,
"max": 5,
"conditions": "VEN = VDIA_EN = 5V, VSEL1 = VSEL2 = 0V, IOUT = 780mA",
"source_page": 8,
"source": "datasheet"
},
{
"name": "Current sense accuracy at 300mA",
"symbol": "ISNSI",
"kind": "electrical",
"unit": "%",
"min": -12,
"typ": null,
"max": 12,
"conditions": "VEN = VDIA_EN = 5V, VSEL1 = VSEL2 = 0V, IOUT = 300mA",
"source_page": 8,
"source": "datasheet"
},
{
"name": "Current sense accuracy at 100mA",
"symbol": "ISNSI",
"kind": "electrical",
"unit": "%",
"min": -42,
"typ": null,
"max": 42,
"conditions": "VEN = VDIA_EN = 5V, VSEL1 = VSEL2 = 0V, IOUT = 100mA",
"source_page": 8,
"source": "datasheet"
},
{
"name": "ISNS fault high level",
"symbol": "ISNSFH",
"kind": "electrical",
"unit": "mA",
"min": 6,
"typ": 6.9,
"max": 7.6,
"conditions": "VDIA_EN = 5V, VSEL1 = 0V, VSEL2 = 0",
"source_page": 8,
"source": "datasheet"
},
{
"name": "ISNS leakage current",
"symbol": "ISNSleak",
"kind": "electrical",
"unit": "µA",
"min": 0,
"typ": null,
"max": 1,
"conditions": "VDIA_EN = 0V",
"source_page": 8,
"source": "datasheet"
},
{
"name": "Current limit threshold, current-limit loop on",
"symbol": "ICL",
"kind": "electrical",
"unit": "A",
"min": 17,
"typ": 22.2,
"max": 27.8,
"conditions": "TJ = -40°C",
"source_page": 8,
"source": "datasheet"
},
{
"name": "Current limit threshold, current-limit loop on",
"symbol": "ICL",
"kind": "electrical",
"unit": "A",
"min": 15,
"typ": 20,
"max": 25,
"conditions": "TJ = 25°C",
"source_page": 8,
"source": "datasheet"
},
{
"name": "Current limit threshold, current-limit loop on",
"symbol": "ICL",
"kind": "electrical",
"unit": "A",
"min": 12.8,
"typ": 16,
"max": 20,
"conditions": "TJ = 125°C",
"source_page": 9,
"source": "datasheet"
},
{
"name": "Open-load detection voltage",
"symbol": "VOL",
"kind": "electrical",
"unit": "V",
"min": 2,
"typ": 2.5,
"max": 4,
"conditions": "VEN = 0V, VDIA_EN = 5V",
"source_page": 9,
"source": "datasheet"
},
{
"name": "OL and STB indication time, switch disabled, from EN falling edge",
"symbol": "tOL1",
"kind": "electrical",
"unit": "µs",
"min": 300,
"typ": 500,
"max": 700,
"conditions": "VEN = 5V to 0V, VDIA_EN = 5V, VSELx = 00, IOUT = 0mA, VOUT = 4V",
"source_page": 9,
"source": "datasheet"
},
{
"name": "Retry time, fault shutdown to switch re-enable",
"symbol": "tRETRY",
"kind": "electrical",
"unit": "ms",
"min": 1,
"typ": 2,
"max": 3,
"conditions": "thermal shutdown, current limit and energy limit",
"source_page": 9,
"source": "datasheet"
},
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