component
BD81870EFV-ME2
Public Made by Adomby adom
ROHM Semicon DC-DC Converters, HTSSOP-20-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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"component": {
"mpn": "BD81870EFV-ME2",
"manufacturer": "ROHM Semicon",
"package": "HTSSOP-20-EP",
"pin_count": 21,
"category": "Power Management ICs",
"subcategory": "DC-DC Converters",
"datasheet": "https://datasheet.lcsc.com/datasheet/pdf/49a16b82c42003bb5b80f1425ed245cb.pdf",
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"distributor_links": {
"lcsc": "C2071961",
"digikey": "BD81870EFV-ME2TR-ND",
"mouser": "755-BD81870EFV-ME2"
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"pins": [
{
"number": "1",
"name": "VDDA",
"type": "power_in",
"description": "Analog power supply pin of the controller, to be supplied from the input supply VDD."
},
{
"number": "2",
"name": "STB2",
"type": "input",
"description": "ON/OFF control pin for the step-up DC/DC converter channel 2."
},
{
"number": "3",
"name": "STB1",
"type": "input",
"description": "ON/OFF control pin for the inverted DC/DC converter channel 1."
},
{
"number": "4",
"name": "SEQON",
"type": "input",
"description": "Sequence ON/OFF pin; when L the two DC/DC channels are controlled independently, when H the internal sequence controls them."
},
{
"number": "5",
"name": "HSWON",
"type": "input",
"description": "ON/OFF control pin for the built-in high-side switch."
},
{
"number": "6",
"name": "N.C.",
"type": "unconnected",
"description": "No internal connection."
},
{
"number": "7",
"name": "VREF",
"type": "power_in",
"description": "Reference voltage output of the inverted DC/DC converter."
},
{
"number": "8",
"name": "NON1",
"type": "input",
"description": "Feedback pin of the inverted DC/DC converter channel 1."
},
{
"number": "9",
"name": "DIS1",
"type": "passive",
"description": "Discharge pin of the inverted DC/DC converter channel 1."
},
{
"number": "10",
"name": "LX1",
"type": "passive",
"description": "Switching pin of the inverted DC/DC converter channel 1."
},
{
"number": "11",
"name": "VDDP",
"type": "power_in",
"description": "Power supply pin for the power stage."
},
{
"number": "12",
"name": "VDDP",
"type": "power_in",
"description": "Power supply pin for the power stage."
},
{
"number": "13",
"name": "VDDP",
"type": "power_in",
"description": "Power supply pin for the power stage."
},
{
"number": "14",
"name": "HS2L",
"type": "output",
"description": "High-side switch output pin."
},
{
"number": "15",
"name": "LX2",
"type": "passive",
"description": "Switching pin of the step-up DC/DC converter channel 2."
},
{
"number": "16",
"name": "GNDP",
"type": "power_in",
"description": "Ground pin of the step-up DC/DC converter."
},
{
"number": "17",
"name": "VOUT2",
"type": "input",
"description": "Output voltage sense pin of the step-up DC/DC converter."
},
{
"number": "18",
"name": "DIS2",
"type": "passive",
"description": "Discharge pin of the step-up DC/DC converter."
},
{
"number": "19",
"name": "GNDA",
"type": "power_in",
"description": "Analog ground pin."
},
{
"number": "20",
"name": "INV2",
"type": "input",
"description": "Feedback pin of the step-up DC/DC converter."
},
{
"number": "21",
"name": "EP",
"type": "passive",
"description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
}
],
"provenance": {
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"primary_model": "claude-haiku-5-5",
"primary_mode": "text",
"consensus_model": "claude-sonnet-5-5",
"consensus": "agreed",
"guards": "pin_guards 0.1: passed",
"guard_notes": [
"extractor flagged: Pinout taken from the 'Pin Description' table on page 3 (HTSSOP-B20, the EFV package this MPN orders"
],
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"cost_usd": 0.017,
"at": "2026-11-02T17:48:19"
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"pages": 35,
"sha256": "40d553648ed38e2b",
"source_tier": "mfr"
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"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 21,
"described": 21,
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