component
DX1240
Public Made by Adomby adom
Dersem LED Drivers, SOT-23-6. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433
{
"schema_version": 1,
"type": "component",
"slug": "dx1240",
"title": "DX1240",
"brief": "Dersem LED Drivers, SOT-23-6. 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",
"led drivers",
"dx1240",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "DX1240",
"manufacturer": "Dersem",
"package": "SOT-23-6",
"pin_count": 6,
"category": "LED Drivers",
"subcategory": "LED Drivers",
"datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603369277894643712",
"parts": {
"symbol": "dx1240.kicad_sym",
"footprint": "dx1240.kicad_mod",
"model_3d": "dx1240-hero.glb",
"model_3d_plain": "dx1240-etched.glb",
"model_3d_step": "dx1240-etched.step",
"model_3d_step_plain": "dx1240.step",
"lbr": "dx1240.lbr"
},
"distributor_links": {
"lcsc": "C22364151"
},
"distributor_check": {
"checked_at": "2026-10-18T21:20:27Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": null,
"status": "quota"
},
"mouser": {
"pn": null,
"status": "quota"
}
},
"pins": [
{
"number": "1",
"name": "CS",
"type": "input",
"description": "Output current sense pin; the LED current is set by the external sense resistor as IOUT = 0.137 / Rcs, with CS regulation voltage 132-142 mV (typ. 137 mV) at VCC = 5 V and a CS pin rating of -0.3 to 6 V."
},
{
"number": "2",
"name": "GND",
"type": "power_in",
"description": "Chip ground reference."
},
{
"number": "3",
"name": "VIN",
"type": "power_in",
"description": "Supply input; the features list an operating range of 2.5-40 V, the electrical table gives a minimum of 3.0 V, and the absolute maximum rating is -0.3 to 46 V."
},
{
"number": "4",
"name": "VDDO",
"type": "power_out",
"description": "5 V auxiliary supply output that can power an external PWM controller (DX1240 only); the VDD pin rating is -0.3 to 6 V."
},
{
"number": "5",
"name": "DRV",
"type": "output",
"description": "NMOS gate drive output for the external MOSFET; the DRV pin rating is -0.3 to 6 V."
},
{
"number": "6",
"name": "DIM",
"type": "input",
"description": "PWM dimming input with internal 100 uA pull-up (defaults high when floating); PWM input rating is -0.3 to 6.0 V, the rising threshold is 0.5*VDD and the falling threshold is 0.3*VDD, and holding it low for more than 120 ms puts the chip into sleep mode."
}
],
"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 datasheet's pin tables are not labeled by package in the text. The DX1240 ordering row lists the; Conflicting VIN minimum: the features and overview state 2.5-40 V, while the electrical table gives ; Pin 4 (VDDO) function is inconsistent: the pin table calls it a 'constant-current drive pin' (恒流驱动脚)"
],
"pages_sent": 9,
"cost_usd": 0.038,
"at": "2026-10-18T21:18:11"
},
"datasheet": {
"url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603369277894643712",
"pages": 9,
"sha256": "dcd1102efc9dac6e",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 6,
"described": 6,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"models_3d": [
{
"file": "dx1240.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
2.8,
2.9,
1.55
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "c9fe686b4d1b56927a41fa84a9bc1efb61d8a45a123a3db43bcaa05c2891d635",
"checked": "2026-10-18",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "dx1240-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
2.8,
2.9,
1.55
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "b38b0877a48e971dd0288266149943c8fc08278a332c9aede0b3709615075fe5",
"checked": "2026-10-18",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
},
"metadata": {
"specs": {
"Manufacturer": "Dersem",
"Package": "SOT-23-6",
"Category": "LED Drivers",
"Pins": "6"
},
"characteristics": {
"version": 1,
"source": "datasheet",
"datasheet_sha256": "dcd1102efc9dac6efd3183fd3860854f10fde2160793b019a6c4f563bf3670c7",
"rows": [
{
"name": "VIN 电压范围",
"symbol": "VIN",
"kind": "electrical",
"unit": "V",
"min": 3,
"typ": null,
"max": 40,
"conditions": "",
"source_page": 4,
"source": "datasheet"
},
{
"name": "恒流调节电压",
"symbol": "VCS",
"kind": "electrical",
"unit": "mV",
"min": 132,
"typ": 137,
"max": 142,
"conditions": "VCC＝5V",
"source_page": 4,
"source": "datasheet"
},
{
"name": "输出电流",
"symbol": "IOUT",
"kind": "electrical",
"unit": "A",
"min": null,
"typ": null,
"max": 2,
"conditions": "",
"source_page": 4,
"source": "datasheet"
},
{
"name": "VIN 芯片工作电源 (absolute max)",
"symbol": "VIN",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 46,
"conditions": "",
"source_page": 3,
"source": "datasheet"
},
{
"name": "PWM 输入电压 (absolute max)",
"symbol": "VDIM",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 6,
"conditions": "",
"source_page": 3,
"source": "datasheet"
},
{
"name": "CS 端口耐压 (absolute max)",
"symbol": "VCS",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 6,
"conditions": "",
"source_page": 3,
"source": "datasheet"
},
{
"name": "DRV 端口耐压 (absolute max)",
"symbol": "VDRV",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 6,
"conditions": "",
"source_page": 3,
"source": "datasheet"
},
{
"name": "VDD 端口耐压 (absolute max)",
"symbol": "VDD",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 6,
"conditions": "",
"source_page": 3,
"source": "datasheet"
},
{
"name": "存储温度",
"symbol": "TSTG",
"kind": "absolute_maximum",
"unit": "℃",
"min": -40,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 3,
"source": "datasheet"
},
{
"name": "工作温度",
"symbol": "TA",
"kind": "absolute_maximum",
"unit": "℃",
"min": -40,
"typ": null,
"max": 125,
"conditions": "",
"source_page": 3,
"source": "datasheet"
},
{
"name": "HBM 人体放电模式 ESD",
"symbol": "VESD",
"kind": "absolute_maximum",
"unit": "KV",
"min": 2,
"typ": null,
"max": null,
"conditions": "HBM 人体放电模式",
"source_page": 3,
"source": "datasheet"
},
{
"name": "建议电流范围 下限",
"symbol": "",
"kind": "recommended_operating",
"unit": "mA",
"min": 17,
"typ": null,
"max": null,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "建议电流范围 上限",
"symbol": "",
"kind": "recommended_operating",
"unit": "A",
"min": null,
"typ": null,
"max": 2,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "工作电流",
"symbol": "IDD",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": 0.7,
"max": null,
"conditions": "VIN＝5V",
"source_page": 4,
"source": "datasheet"
},
{
"name": "休眠待机电流",
"symbol": "Istandby",
"kind": "electrical",
"unit": "uA",
"min": null,
"typ": 85,
"max": null,
"conditions": "VIN=4V",
"source_page": 4,
"source": "datasheet"
},
{
"name": "VDDO 电压",
"symbol": "VDDO",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": 5.6,
"max": null,
"conditions": "",
"source_page": 4,
"source": "datasheet"
},
{
"name": "恒流拐点",
"symbol": "V_IOUT",
"kind": "electrical",
"unit": "mV",
"min": null,
"typ": 200,
"max": null,
"conditions": "IOUT=1A",
"source_page": 4,
"source": "datasheet"
},
{
"name": "最高结温 (过温降电流)",
"symbol": "TjMAX",
"kind": "thermal",
"unit": "℃",
"min": null,
"typ": 135,
"max": null,
"conditions": "过温降电流的方式",
"source_page": 4,
"source": "datasheet"
}
]
}
},
"variants": [],
"sections": [
"hero",
"viewers",
"readme",
"breadcrumbs",
"info"
],
"discovery_triggers": [
"dx1240"
],
"discovery_pitch": "DX1240 (Dersem) 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",
"dx1240.kicad_sym",
"dx1240.kicad_mod",
"dx1240.glb",
"dx1240.step",
"dx1240.lbr",
"docs/hero.png",
"docs/dx1240-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"dx1240-hero.glb",
"dx1240-hero.overlay.json",
"dx1240-etched.glb"
],
"visibility": {
"public": true
}
}