component
SM5402
Public Made by Adomby adom
HICHON Battery Management ICs, ESOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551
{
"schema_version": 1,
"type": "component",
"slug": "sm5402",
"title": "SM5402",
"brief": "HICHON Battery Management ICs, ESOP-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 supply chip",
"sm5402",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "SM5402",
"manufacturer": "HICHON",
"package": "ESOP-8",
"pin_count": 9,
"category": "Power Supply Chip",
"subcategory": "Battery Management ICs",
"datasheet": "https://datasheet.lcsc.com/datasheet/pdf/555c1dd676aed01e769f5f4ef81e7600.pdf",
"parts": {
"symbol": "sm5402.kicad_sym",
"footprint": "sm5402.kicad_mod",
"model_3d": "sm5402-hero.glb",
"model_3d_plain": "sm5402-etched.glb",
"model_3d_step": "sm5402-etched.step",
"model_3d_step_plain": "sm5402.step",
"lbr": "sm5402.lbr"
},
"distributor_links": {
"lcsc": "C5157549",
"digikey": "4878-SM5402CT-ND",
"mouser": "637-SM5402"
},
"distributor_check": {
"checked_at": "2026-10-21T04:48:33Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "4878-SM5402CT-ND",
"status": "found",
"lifecycle": "Active"
},
"mouser": {
"pn": "637-SM5402",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "L1",
"type": "output",
"description": "LED indicator 1 drive pin for charge and discharge status; the datasheet states that leaving LED1 unconnected selects single-LED mode and absolute maximum voltage is -0.3V to 5.5V."
},
{
"number": "2",
"name": "L2",
"type": "output",
"description": "LED indicator 2 drive pin for charge and discharge status, with absolute maximum voltage of -0.3V to 5.5V."
},
{
"number": "3",
"name": "BTP",
"type": "power_in",
"description": "Battery terminal connected to the lithium cell, with absolute maximum voltage of -0.3V to 5.5V and a battery voltage range of 2.95V to 4.4V in the electrical characteristics."
},
{
"number": "4",
"name": "VOUT",
"type": "input",
"description": "Output voltage feedback pin for the boost converter, with absolute maximum voltage of -0.3V to 5.5V; the boost output is fixed at 5.1V (typ) with overvoltage protection at 5.8V."
},
{
"number": "5",
"name": "VO/IN",
"type": "bidirectional",
"description": "Shared output/input port used for USB charging input (4.5V to 5.5V) and boost output, with a stated working range of 0.5V to 5V and absolute maximum of -0.3V to 5.5V."
},
{
"number": "6",
"name": "LX",
"type": "passive",
"description": "Inductor connection for the synchronous boost converter, with absolute maximum voltage of -0.3V to 5.5V; the typical application circuit uses a 4.7uH inductor."
},
{
"number": "7",
"name": "PGND",
"type": "power_in",
"description": "Power ground for the boost and charger power stage, with absolute maximum rating of -0.3V to 5.5V relative to GND."
},
{
"number": "8",
"name": "AGND",
"type": "power_in",
"description": "Analog ground for the control circuitry, with absolute maximum rating of -0.3V to 5.5V relative to GND."
},
{
"number": "9",
"name": "EP",
"type": "passive",
"description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
}
],
"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 lists ESOP-8 as the only package (ordering table: ESOP8, Pb-free, reel of 4000pcs), so; The datasheet gives no explicit ERC class for pins. Types for L1/L2 (output), BTP and PGND/AGND (pow; Pin descriptions are taken from the Chinese pin description table and the maximum-rating and electri",
"exposed pad 9 added from the footprint"
],
"pages_sent": 7,
"cost_usd": 0.0257,
"at": "2026-10-21T04:46:05"
},
"datasheet": {
"url": "https://datasheet.lcsc.com/datasheet/pdf/555c1dd676aed01e769f5f4ef81e7600.pdf",
"pages": 7,
"sha256": "0523657553876694",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 9,
"described": 9,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"models_3d": [
{
"file": "sm5402.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
6.9,
4.9,
1.65
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "f1718a42c5ea007e8e2dd672ac39a1bb358ee4849bd53c42e21ce83e0e5df7a9",
"checked": "2026-10-21",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "sm5402-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
6.9,
4.9,
1.65
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "d762d90bef0029f0aee7c95c40c51badb221af81cc52b3283c299744d3498111",
"checked": "2026-10-21",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
},
"metadata": {
"specs": {
"Manufacturer": "HICHON",
"Package": "ESOP-8",
"Category": "Power Supply Chip",
"Pins": "9"
},
"characteristics": {
"version": 1,
"source": "datasheet",
"datasheet_sha256": "0523657553876694c245ba000530fe5ece56a8c66d69bd9caf167c7b3a4cd73d",
"rows": [
{
"name": "VIN input voltage range",
"symbol": "VIN",
"kind": "electrical",
"unit": "V",
"min": 4.5,
"typ": 5,
"max": 5.5,
"conditions": "",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Battery voltage (Vbat)",
"symbol": "Vbat",
"kind": "electrical",
"unit": "V",
"min": 2.95,
"typ": null,
"max": 4.4,
"conditions": "",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Float (constant-voltage) threshold",
"symbol": "Vfloat",
"kind": "electrical",
"unit": "V",
"min": 4.158,
"typ": 4.2,
"max": 4.242,
"conditions": "",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Boost system output voltage",
"symbol": "VO",
"kind": "electrical",
"unit": "V",
"min": 4.95,
"typ": 5.1,
"max": 5.25,
"conditions": "",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Maximum voltage on VO/IN, L1, L2, BTP, VOUT, LX, PGND, AGND",
"symbol": "VO/IN, L1, L2, BTP, VOUT, LX, PGND, AGND",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 5.5,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Operating junction temperature",
"symbol": "TJ",
"kind": "absolute_maximum",
"unit": "degC",
"min": -40,
"typ": null,
"max": 125,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Storage temperature",
"symbol": "TSTG",
"kind": "absolute_maximum",
"unit": "degC",
"min": -40,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Operating ambient temperature",
"symbol": "TA",
"kind": "recommended_operating",
"unit": "degC",
"min": -40,
"typ": null,
"max": 70,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Quiescent current",
"symbol": "Iq",
"kind": "electrical",
"unit": "uA",
"min": null,
"typ": 13,
"max": null,
"conditions": "BAT=3.6V",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Charging current",
"symbol": "Ichg",
"kind": "electrical",
"unit": "A",
"min": null,
"typ": 1,
"max": null,
"conditions": "VIN=4.75-5.25V",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Output current",
"symbol": "IOUT",
"kind": "electrical",
"unit": "A",
"min": null,
"typ": 1,
"max": null,
"conditions": "BAT=3.6V, Vout>4.8V",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Trickle-to-constant-current transition voltage",
"symbol": "VTRKL",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": 2.8,
"max": null,
"conditions": "VBAT rising (从低到高)",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Trickle charge hysteresis voltage",
"symbol": "VTRHYS",
"kind": "electrical",
"unit": "mV",
"min": null,
"typ": 100,
"max": null,
"conditions": "",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Recharge threshold voltage",
"symbol": "VRECHG",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": 4.1,
"max": null,
"conditions": "",
"source_page": 4,
"source": "datasheet"
},
{
"name": "VIN power-down monitor threshold, VIN rising",
"symbol": "",
"kind": "electrical",
"unit": "mV",
"min": null,
"typ": 250,
"max": null,
"conditions": "VIN rising, Vin>BAT",
"source_page": 4,
"source": "datasheet"
},
{
"name": "VIN power-down monitor threshold, VIN falling",
"symbol": "",
"kind": "electrical",
"unit": "mV",
"min": null,
"typ": 50,
"max": null,
"conditions": "VIN falling, Vin>BAT",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Output overvoltage protection",
"symbol": "VOVP",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": 5.8,
"max": null,
"conditions": "",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Output overvoltage protection release",
"symbol": "VOVP_DIS",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": 5.4,
"max": null,
"conditions": "",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Boost undervoltage lockout",
"symbol": "VUVLO",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": 2.95,
"max": null,
"conditions": "BAT falling (由高到低)",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Boost undervoltage lockout recovery",
"symbol": "VUVLO_R",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": 3.2,
"max": null,
"conditions": "BAT rising (由低到高)",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Battery supply current, no switching",
"symbol": "IBAT1",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": 0.2,
"max": null,
"conditions": "Vout=5.5V, No switching",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Battery supply current, switching",
"symbol": "IBAT2",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": 1,
"max": null,
"conditions": "Vout=4.5V, switching",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Auto-shutdown load current",
"symbol": "Iauto_off",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": 60,
"max": null,
"conditions": "BAT=3.6V, Cout=20uF",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Operating frequency",
"symbol": "FOSC",
"kind": "electrical",
"unit": "MHz",
"min": null,
"typ": 1,
"max": null,
"conditions": "",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Over-temperature protection threshold",
"symbol": "OTP",
"kind": "electrical",
"unit": "degC",
"min": null,
"typ": 150,
"max": null,
"conditions": "",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Over-temperature protection hysteresis",
"symbol": "OTP_HYS",
"kind": "electrical",
"unit": "degC",
"min": null,
"typ": 20,
"max": null,
"conditions": "",
"source_page": 4,
"source": "datasheet"
}
]
}
},
"variants": [],
"sections": [
"hero",
"viewers",
"readme",
"breadcrumbs",
"info"
],
"discovery_triggers": [
"sm5402"
],
"discovery_pitch": "SM5402 (HICHON) 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",
"sm5402.kicad_sym",
"sm5402.kicad_mod",
"sm5402.glb",
"sm5402.step",
"sm5402.lbr",
"docs/hero.png",
"docs/sm5402-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"sm5402-hero.glb",
"sm5402-hero.overlay.json",
"sm5402-etched.glb"
],
"visibility": {
"public": true
}
}