component
BL4056C-42ES
Public Made by Adomby adom
BL(Shanghai Belling) Battery Management ICs, ESOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600601602603604605606607608609610611612613614615616617618619620621622623624625626627628629630631632633634635636637638639640641642643644645646647648649650651652653654655656657658659660661662663664665666667668669670671672673674675676677678679680681682683684685686687688689690691692693694695696697698699700701702703704705706707708709710711712713714715716
{
"schema_version": 1,
"type": "component",
"slug": "bl4056c-42es",
"title": "BL4056C-42ES",
"brief": "BL(Shanghai Belling) 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 management ics",
"bl4056c-42es",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "BL4056C-42ES",
"manufacturer": "BL(Shanghai Belling)",
"package": "ESOP-8",
"pin_count": 9,
"category": "Power Management ICs",
"subcategory": "Battery Management ICs",
"datasheet": "https://datasheet.lcsc.com/datasheet/pdf/aaf3e6019fe8bcac5e4086a773cce8d2.pdf",
"parts": {
"symbol": "bl4056c-42es.kicad_sym",
"footprint": "bl4056c-42es.kicad_mod",
"model_3d": "bl4056c-42es-hero.glb",
"model_3d_plain": "bl4056c-42es-etched.glb",
"model_3d_step": "bl4056c-42es-etched.step",
"model_3d_step_plain": "bl4056c-42es.step",
"lbr": "bl4056c-42es.lbr"
},
"distributor_links": {
"lcsc": "C918909"
},
"distributor_check": {
"checked_at": "2026-11-05T15:08:49Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": null,
"status": "no match"
},
"mouser": {
"pn": null,
"status": "no match"
}
},
"pins": [
{
"number": "1",
"name": "TEMP",
"type": "input",
"description": "Battery temperature sense input: the NTC divider voltage is compared with internal thresholds VLOW = 45%×VCC and VHIGH = 80%×VCC, charging pauses when VTEMP is outside that window, and tying TEMP to GND disables temperature monitoring; absolute maximum is -0.3 V to 10 V."
},
{
"number": "2",
"name": "PROG",
"type": "bidirectional",
"description": "Sets the constant-charge current through a resistor to GND (IBAT = 1100 / RPROG, for example 1.1 kΩ gives 1000 mA, ±10%) and monitors the charge current with about 1.0 V on the pin in current mode; absolute limits are -0.3 V to VCC+0.3 V and 1200 µA pin current."
},
{
"number": "3",
"name": "GND",
"type": "power_in",
"description": "Ground pin; the PROG current-set resistor and the TEMP divider network return to this pin."
},
{
"number": "4",
"name": "VCC",
"type": "power_in",
"description": "Input supply pin with a specified operating range of 4.2 V to 9.0 V (5 V typical) and absolute range of -6.5 V to 9 V; undervoltage lockout threshold is 3.6 V and adaptive current reduction starts at 4.3 V."
},
{
"number": "5",
"name": "BAT",
"type": "power_out",
"description": "Charger output to the single Li-ion cell, with a float voltage of 4.2 V for the BL4056C-42ES variant, absolute limits of -4.35 V to 7 V, and a pin current rating of 1200 mA."
},
{
"number": "6",
"name": "STDBY",
"type": "output",
"description": "Open-drain charge-complete status output that is pulled low when charging is finished, with output low of 0.3 V to 0.6 V at 5 mA and absolute maximum of -0.3 V to 10 V."
},
{
"number": "7",
"name": "CHRG",
"type": "output",
"description": "Open-drain charging status output that is pulled low while the battery is charging and is high-impedance otherwise, with output low of 0.3 V to 0.6 V at 5 mA and absolute maximum of -0.3 V to 10 V."
},
{
"number": "8",
"name": "CE",
"type": "input",
"description": "Chip-enable input: driving it low stops charging and places the device in shutdown, with an absolute range of -6.5 V to 10 V."
},
{
"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 pin numbers, names and functions come from the ESOP8 pin table on page 2. The ordering table on ; The KiCad ERC types are my classification, not datasheet statements. PROG is set to bidirectional be; The datasheet gives two TEMP threshold sets: page 3 lists 43–45% and 80–82% of VCC, and page 6 state",
"exposed pad 9 added from the footprint"
],
"pages_sent": 12,
"cost_usd": 0.0474,
"at": "2026-11-05T15:08:36"
},
"datasheet": {
"url": "https://datasheet.lcsc.com/datasheet/pdf/aaf3e6019fe8bcac5e4086a773cce8d2.pdf",
"pages": 12,
"sha256": "a6c827c4c83b84ee",
"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": "bl4056c-42es.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": "2026-11-05",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "bl4056c-42es-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": "0c4f09c4b8120a121918a3507c709f2fde9259fc2d34e7866e7245ffdde0d585",
"checked": "2026-11-05",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
},
"metadata": {
"specs": {
"Manufacturer": "BL(Shanghai Belling)",
"Package": "ESOP-8",
"Category": "Power Management ICs",
"Pins": "9"
},
"characteristics": {
"version": 1,
"source": "datasheet",
"datasheet_sha256": "a6c827c4c83b84eef13b53e3fa501414cc75789f745bf4d93e54b2030f498eab",
"rows": [
{
"name": "输入电源电压 (VCC) - supply voltage",
"symbol": "VCC",
"kind": "electrical",
"unit": "V",
"min": 4.2,
"typ": 5,
"max": 9,
"conditions": "",
"source_page": 3,
"source": "datasheet"
},
{
"name": "输入电源电流 - charge mode",
"symbol": "ICC",
"kind": "electrical",
"unit": "μA",
"min": null,
"typ": 150,
"max": 500,
"conditions": "充电模式，RPROG=1.1K",
"source_page": 3,
"source": "datasheet"
},
{
"name": "输入电源电流 - standby (charge terminated)",
"symbol": "ICC",
"kind": "electrical",
"unit": "μA",
"min": null,
"typ": 70,
"max": 120,
"conditions": "待机模式（充电终止）",
"source_page": 3,
"source": "datasheet"
},
{
"name": "输入电源电流 - shutdown",
"symbol": "ICC",
"kind": "electrical",
"unit": "μA",
"min": null,
"typ": 70,
"max": 120,
"conditions": "停机模式（RPROG未连，VCC<VBAT，或 VCC<VUV）",
"source_page": 3,
"source": "datasheet"
},
{
"name": "稳定输出（浮充）电压 - 4.2V version",
"symbol": "VFLOAL",
"kind": "electrical",
"unit": "V",
"min": 4.158,
"typ": 4.2,
"max": 4.242,
"conditions": "0℃≤TA≤85℃",
"source_page": 3,
"source": "datasheet"
},
{
"name": "BAT pin current - current mode",
"symbol": "IBAT",
"kind": "electrical",
"unit": "mA",
"min": 450,
"typ": 500,
"max": 550,
"conditions": "电流模式测试 VBAT=4.0V，RPROG=2.2K",
"source_page": 3,
"source": "datasheet"
},
{
"name": "BAT pin current - current mode",
"symbol": "IBAT",
"kind": "electrical",
"unit": "mA",
"min": 950,
"typ": 1000,
"max": 1060,
"conditions": "电流模式测试 VBAT=4.0V，RPROG=1.1K",
"source_page": 3,
"source": "datasheet"
},
{
"name": "BAT pin current - standby",
"symbol": "IBAT",
"kind": "electrical",
"unit": "μA",
"min": -2,
"typ": null,
"max": -1,
"conditions": "待机模式，VBAT=VFLOAL",
"source_page": 3,
"source": "datasheet"
},
{
"name": "BAT pin current - shutdown",
"symbol": "IBAT",
"kind": "electrical",
"unit": "μA",
"min": -6,
"typ": null,
"max": -2,
"conditions": "停机模式（RPROG未连）",
"source_page": 3,
"source": "datasheet"
},
{
"name": "涓流充电电流 - trickle charge current",
"symbol": "ITRIKL",
"kind": "electrical",
"unit": "mA",
"min": 200,
"typ": 230,
"max": 260,
"conditions": "VBAT<VTRIKL，RPROG=1.1K",
"source_page": 3,
"source": "datasheet"
},
{
"name": "涓流充电门限电压 - trickle charge threshold",
"symbol": "VTRIKL",
"kind": "electrical",
"unit": "V",
"min": 2.8,
"typ": 2.9,
"max": 3,
"conditions": "RPROG=1.1K，VBAT上升",
"source_page": 3,
"source": "datasheet"
},
{
"name": "涓流充电迟滞电压 - trickle charge hysteresis",
"symbol": "VTRHYS",
"kind": "electrical",
"unit": "mV",
"min": 60,
"typ": 80,
"max": 100,
"conditions": "RPROG=1.1K",
"source_page": 3,
"source": "datasheet"
},
{
"name": "VCC欠压闭锁迟滞 - UVLO hysteresis",
"symbol": "VUVHYS",
"kind": "electrical",
"unit": "mV",
"min": 150,
"typ": 200,
"max": 300,
"conditions": "",
"source_page": 3,
"source": "datasheet"
},
{
"name": "VCC-VBAT闭锁门限电压 - VCC low to high",
"symbol": "VASD",
"kind": "electrical",
"unit": "mV",
"min": 60,
"typ": 100,
"max": 140,
"conditions": "VCC从低到高",
"source_page": 3,
"source": "datasheet"
},
{
"name": "VCC-VBAT闭锁门限电压 - VCC high to low",
"symbol": "VASD",
"kind": "electrical",
"unit": "mV",
"min": 5,
"typ": 30,
"max": 50,
"conditions": "VCC从高到低",
"source_page": 3,
"source": "datasheet"
},
{
"name": "C/10 终止电流门限 - termination current",
"symbol": "ITERM",
"kind": "electrical",
"unit": "mA",
"min": 60,
"typ": 70,
"max": 80,
"conditions": "RPROG=2.4K",
"source_page": 3,
"source": "datasheet"
},
{
"name": "C/10 终止电流门限 - termination current",
"symbol": "ITERM",
"kind": "electrical",
"unit": "mA",
"min": 120,
"typ": 130,
"max": 140,
"conditions": "RPROG=1.1K",
"source_page": 3,
"source": "datasheet"
},
{
"name": "PROG 引脚电压 - PROG pin voltage",
"symbol": "VPROG",
"kind": "electrical",
"unit": "V",
"min": 0.9,
"typ": 1,
"max": 1.1,
"conditions": "RPROG=1.1K，电流模式",
"source_page": 3,
"source": "datasheet"
},
{
"name": "CHRG 引脚输出低电压 - CHRG output low voltage",
"symbol": "VCHRG",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": 0.3,
"max": 0.6,
"conditions": "CHRG I =5mA",
"source_page": 3,
"source": "datasheet"
},
{
"name": "STDBY 引脚输出低电平 - STDBY output low voltage",
"symbol": "VSTDBY",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": 0.3,
"max": 0.6,
"conditions": "STDBY I =5mA",
"source_page": 3,
"source": "datasheet"
},
{
"name": "TEMP 引脚高端翻转电压 - TEMP high threshold",
"symbol": "VTEMP-H",
"kind": "electrical",
"unit": "%VCC",
"min": 80,
"typ": 82,
"max": null,
"conditions": "",
"source_page": 3,
"source": "datasheet"
},
{
"name": "TEMP 引脚低端翻转电压 - TEMP low threshold",
"symbol": "VTEMP-L",
"kind": "electrical",
"unit": "%VCC",
"min": 43,
"typ": 45,
"max": null,
"conditions": "",
"source_page": 3,
"source": "datasheet"
},
{
"name": "再充电电池门限电压 - recharge threshold",
"symbol": "ΔVRECHRG",
"kind": "electrical",
"unit": "mV",
"min": 80,
"typ": 110,
"max": 140,
"conditions": "VFLOAT-VRECHRG",
"source_page": 3,
"source": "datasheet"
},
{
"name": "再充电比较器滤波时间 - recharge comparator filter time",
"symbol": "tRECHARGE",
"kind": "timing",
"unit": "ms",
"min": 0.8,
"typ": 2,
"max": 4,
"conditions": "VBAT高至低",
"source_page": 3,
"source": "datasheet"
},
{
"name": "终止比较器滤波时间 - termination comparator filter time",
"symbol": "tTERM",
"kind": "timing",
"unit": "ms",
"min": 0.8,
"typ": 2,
"max": 4,
"conditions": "IBAT降至 ICHG/10 以下",
"source_page": 3,
"source": "datasheet"
},
{
"name": "VIN 反向漏电流 - reverse leakage on VIN",
"symbol": "IVIN",
"kind": "electrical",
"unit": "uA",
"min": null,
"typ": 10,
"max": 20,
"conditions": "VIN 端反接，VBAT=VFLOAT",
"source_page": 3,
"source": "datasheet"
},
{
"name": "电池反向漏电流 - reverse leakage on battery",
"symbol": "IBAT",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": 2.5,
"max": 5,
"conditions": "电池反接，VIN=5V",
"source_page": 3,
"source": "datasheet"
},
{
"name": "输入电源电压（VCC）- absolute max",
"symbol": "VCC",
"kind": "absolute_maximum",
"unit": "V",
"min": -6.5,
"typ": null,
"max": 9,
"conditions": "",
"source_page": 1,
"source": "datasheet"
},
{
"name": "PROG 引脚电压 - absolute max",
"symbol": "PROG",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": null,
"conditions": "max printed as VCC+0.3V",
"source_page": 1,
"source": "datasheet"
},
{
"name": "BAT 引脚电压 - absolute max",
"symbol": "BAT",
"kind": "absolute_maximum",
"unit": "V",
"min": -4.35,
"typ": null,
"max": 7,
"conditions": "",
"source_page": 1,
"source": "datasheet"
},
{
"name": "CHRG 引脚电压 - absolute max",
"symbol": "CHRG",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 10,
"conditions": "",
"source_page": 1,
"source": "datasheet"
},
{
"name": "STDBY 引脚电压 - absolute max",
"symbol": "STDBY",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 10,
"conditions": "",
"source_page": 1,
"source": "datasheet"
},
{
"name": "TEMP 引脚电压 - absolute max",
"symbol": "TEMP",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 10,
"conditions": "",
"source_page": 1,
"source": "datasheet"
},
{
"name": "CE 引脚电压 - absolute max",
"symbol": "CE",
"kind": "absolute_maximum",
"unit": "V",
"min": -6.5,
"typ": null,
"max": 10,
"conditions": "",
"source_page": 1,
"source": "datasheet"
},
{
"name": "BAT 引脚电流 - absolute max",
"symbol": "IBAT",
"kind": "absolute_maximum",
"unit": "mA",
"min": null,
"typ": null,
"max": 1200,
"conditions": "",
"source_page": 1,
"source": "datasheet"
},
{
"name": "PROG 引脚电流 - absolute max",
"symbol": "IPROG",
"kind": "absolute_maximum",
"unit": "uA",
"min": null,
"typ": null,
"max": 1200,
"conditions": "",
"source_page": 1,
"source": "datasheet"
},
{
"name": "最大结温 - maximum junction temperature",
"symbol": "TJ",
"kind": "absolute_maximum",
"unit": "℃",
"min": null,
"typ": null,
"max": 145,
"conditions": "",
"source_page": 1,
"source": "datasheet"
},
{
"name": "贮存温度范围 - storage temperature",
"symbol": "TSTG",
"kind": "absolute_maximum",
"unit": "℃",
"min": -65,
"typ": null,
"max": 125,
"conditions": "",
"source_page": 1,
"source": "datasheet"
},
{
"name": "引脚温度（焊接）- lead temperature",
"symbol": "TLEAD",
"kind": "absolute_maximum",
"unit": "℃",
"min": null,
"typ": null,
"max": 260,
"conditions": "焊接时间10秒",
"source_page": 1,
"source": "datasheet"
},
{
"name": "工作环境温度范围 - operating ambient temperature",
"symbol": "",
"kind": "recommended_operating",
"unit": "℃",
"min": -40,
"typ": null,
"max": 85,
"conditions": "",
"source_page": 1,
"source": "datasheet"
}
]
}
},
"variants": [],
"sections": [
"hero",
"viewers",
"readme",
"breadcrumbs",
"info"
],
"discovery_triggers": [
"bl4056c-42es"
],
"discovery_pitch": "BL4056C-42ES (BL(Shanghai Belling)) 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",
"bl4056c-42es.kicad_sym",
"bl4056c-42es.kicad_mod",
"bl4056c-42es.glb",
"bl4056c-42es.step",
"bl4056c-42es.lbr",
"docs/hero.png",
"docs/bl4056c-42es-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"bl4056c-42es-hero.glb",
"bl4056c-42es-hero.overlay.json",
"bl4056c-42es-etched.glb"
],
"visibility": {
"public": true
}
}