component
FT838NB1-RT
Public Made by Adomby adom
FMD Fremont Micro Devices Power Distribution Switches, SOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553
{
"schema_version": 1,
"type": "component",
"slug": "ft838nb1-rt",
"title": "FT838NB1-RT",
"brief": "FMD Fremont Micro Devices Power Distribution Switches, SOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"version": "0.1.0",
"license": "CC-BY-SA-4.0",
"tags": [
"component",
"power management (pmic)",
"ft838nb1-rt",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "FT838NB1-RT",
"manufacturer": "FMD Fremont Micro Devices",
"package": "SOP-8",
"pin_count": 8,
"category": "Power Management (PMIC)",
"subcategory": "Power Distribution Switches",
"datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588884267644018688",
"parts": {
"symbol": "ft838nb1-rt.kicad_sym",
"footprint": "ft838nb1-rt.kicad_mod",
"model_3d": "ft838nb1-rt-hero.glb",
"model_3d_plain": "ft838nb1-rt-etched.glb",
"model_3d_step": "ft838nb1-rt-etched.step",
"model_3d_step_plain": "ft838nb1-rt.step",
"lbr": "ft838nb1-rt.lbr"
},
"distributor_links": {
"lcsc": "C190118"
},
"distributor_check": {
"checked_at": "2026-10-18T22:22:20Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": null,
"status": "quota"
},
"mouser": {
"pn": null,
"status": "quota"
}
},
"pins": [
{
"number": "1",
"name": "CS",
"type": "input",
"description": "Primary current sense input; the cycle-by-cycle current limit threshold Vcs_max is 541-563 mV (552 mV typ), with leading edge blanking of 350-450 ns."
},
{
"number": "2",
"name": "FB",
"type": "input",
"description": "Output voltage feedback pin; the feedback voltage threshold Vfb is 2.856-2.944 V (2.9 V typ), and feedback loop open protection triggers at Ifb_open 120-160 uA (140 uA typ)."
},
{
"number": "3",
"name": "VCC",
"type": "power_in",
"description": "Supply voltage pin; UVLO turn-on is 16.5-18.5 V (17.6 V typ) and turn-off is 6.6 V typ, VCC over-voltage protection is 26-29 V (27.5 V typ), and the absolute maximum VCC to GND is +30 V."
},
{
"number": "4",
"name": "NC",
"type": "unconnected",
"description": "No internal connection; leave unconnected."
},
{
"number": "5",
"name": "GND",
"type": "power_in",
"description": "Ground reference for the controller; absolute maximum ratings are referenced to GND."
},
{
"number": "6",
"name": "GND",
"type": "power_in",
"description": "Ground reference for the controller; absolute maximum ratings are referenced to GND."
},
{
"number": "7",
"name": "C",
"type": "passive",
"description": "Collector of the integrated power NPN, connected to the transformer primary; Vcbo is 700 V min at Ic=0.1 mA and the absolute maximum C to GND is +700 V."
},
{
"number": "8",
"name": "C",
"type": "passive",
"description": "Collector of the integrated power NPN, connected to the transformer primary; Vcbo is 700 V min at Ic=0.1 mA and the absolute maximum C to GND is +700 V."
}
],
"provenance": {
"extractor": "extract_pins 0.3",
"factory_chain": {
"factory": "2.0.0",
"extractor": "extract_pins 0.3",
"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: The pin table on page 3 is garbled: pin numbers 5 and 6 are listed above a single 'GND' entry, and 7; The datasheet covers only the SOP8 package (ordering 'Blank: SOP8'), and the FT838NB-RT suffix 'RT' ; Pin descriptions cite electrical values from the Electrical Characteristics (page 6) and Functional "
],
"pages_sent": 10,
"cost_usd": 0.0446,
"at": "2026-10-18T22:19:03"
},
"datasheet": {
"url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588884267644018688",
"pages": 10,
"sha256": "b63c10317d94c974",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 8,
"described": 8,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"models_3d": [
{
"file": "ft838nb1-rt.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
6,
4.9,
1.75
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
"checked": "2026-10-18",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "ft838nb1-rt-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
6,
4.9,
1.75
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "b171ca562ffdb25ce38365e74e2f6d0dbab1c455d923ac61d702b7a636ed20ba",
"checked": "2026-10-18",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
},
"metadata": {
"specs": {
"Manufacturer": "FMD Fremont Micro Devices",
"Package": "SOP-8",
"Category": "Power Management (PMIC)",
"Pins": "8"
},
"characteristics": {
"version": 1,
"source": "datasheet",
"datasheet_sha256": "b63c10317d94c97464f61ddf39ed5092e067349c595e2e216051f376ba62ec3f",
"rows": [
{
"name": "FB to GND voltage",
"symbol": "",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 7,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "CS to GND voltage",
"symbol": "",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 7,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "VCC to GND voltage",
"symbol": "",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 30,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "C to GND voltage",
"symbol": "",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 700,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Operating Temperature Range",
"symbol": "",
"kind": "absolute_maximum",
"unit": "℃",
"min": -40,
"typ": null,
"max": 125,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Junction Temperature",
"symbol": "",
"kind": "absolute_maximum",
"unit": "℃",
"min": -40,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Storage Temperature Range",
"symbol": "",
"kind": "absolute_maximum",
"unit": "℃",
"min": -60,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Maximum Current Threshold",
"symbol": "Vcs_max",
"kind": "electrical",
"unit": "mV",
"min": 541,
"typ": 552,
"max": 563,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Leading Edge Blanking Duration",
"symbol": "Tleb",
"kind": "timing",
"unit": "ns",
"min": 350,
"typ": 400,
"max": 450,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Feedback Voltage Threshold",
"symbol": "Vfb",
"kind": "electrical",
"unit": "V",
"min": 2.856,
"typ": 2.9,
"max": 2.944,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Start Up Threshold Voltage",
"symbol": "Vcc_on",
"kind": "electrical",
"unit": "V",
"min": 16.5,
"typ": 17.6,
"max": 18.5,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Under Voltage Lockout Voltage",
"symbol": "Vcc_off",
"kind": "electrical",
"unit": "V",
"min": 6,
"typ": 6.6,
"max": 7,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "VCC Start Up Current (FT838NB)",
"symbol": "Istart_up",
"kind": "electrical",
"unit": "uA",
"min": null,
"typ": 2,
"max": 5,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Operating Current",
"symbol": "Iop",
"kind": "electrical",
"unit": "mA",
"min": 0.4,
"typ": 0.5,
"max": 0.7,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Feedback Loop Open Protection",
"symbol": "Ifb_open",
"kind": "electrical",
"unit": "uA",
"min": 120,
"typ": 140,
"max": 160,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "VCC Over Voltage Protection",
"symbol": "Vcc_OVP",
"kind": "electrical",
"unit": "V",
"min": 26,
"typ": 27.5,
"max": 29,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Line Compensation",
"symbol": "Vline",
"kind": "electrical",
"unit": "mV",
"min": 30,
"typ": 33,
"max": 36,
"conditions": "Ifb=1mA",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Cable compensation (Kcab), version 1 (FT838NB1, Cable Comp = 3%)",
"symbol": "Kcab",
"kind": "electrical",
"unit": "%",
"min": null,
"typ": 3,
"max": null,
"conditions": "Cable Comp version 1 per marking/ordering table",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Propagation Delay",
"symbol": "Tpd",
"kind": "timing",
"unit": "ns",
"min": null,
"typ": 200,
"max": null,
"conditions": "OUT=1.0nF to GND",
"source_page": 6,
"source": "datasheet"
},
{
"name": "CCM protection Threshold Level",
"symbol": "Vcp",
"kind": "electrical",
"unit": "mV",
"min": null,
"typ": 100,
"max": null,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Over Temperature Protection",
"symbol": "T_OTP",
"kind": "electrical",
"unit": "℃",
"min": null,
"typ": 145,
"max": null,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Collector-Emitter saturation voltage",
"symbol": "VCEsat",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": 0.3,
"max": 0.9,
"conditions": "IB=0.25A,IC=1A",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Base-Emitter saturation voltage",
"symbol": "VBEsat",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": 0.9,
"max": 1.2,
"conditions": "IB=0.25A,IC=1A",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Maximum collector current",
"symbol": "Icm",
"kind": "electrical",
"unit": "A",
"min": null,
"typ": 0.4,
"max": 0.45,
"conditions": "Vc=2V",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Collector-Base breakdown voltage",
"symbol": "Vcbo",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": 700,
"max": null,
"conditions": "Ic=0.1mA",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Collector-Emitter breakdown voltage",
"symbol": "Vceo",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": 400,
"max": null,
"conditions": "Ic=1mA",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Emitter-Base breakdown voltage",
"symbol": "Vebo",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": 9,
"max": null,
"conditions": "IE=0.1mA",
"source_page": 6,
"source": "datasheet"
}
]
}
},
"variants": [],
"sections": [
"hero",
"viewers",
"readme",
"breadcrumbs",
"info"
],
"discovery_triggers": [
"ft838nb1-rt"
],
"discovery_pitch": "FT838NB1-RT (FMD Fremont Micro Devices) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
"author": {
"name": "Ray",
"email": "[email protected]"
},
"dependencies": {},
"hero": {
"type": "image",
"path": "docs/hero.png"
},
"files": [
"page.json",
"README.md",
"ft838nb1-rt.kicad_sym",
"ft838nb1-rt.kicad_mod",
"ft838nb1-rt.glb",
"ft838nb1-rt.step",
"ft838nb1-rt.lbr",
"docs/hero.png",
"docs/ft838nb1-rt-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"ft838nb1-rt-hero.glb",
"ft838nb1-rt-hero.overlay.json",
"ft838nb1-rt-etched.glb"
],
"visibility": {
"public": true
}
}