component
FM4258
Public Made by Adomby adom
Shenzhen Fuman Battery Management, ESOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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"slug": "fm4258",
"title": "FM4258",
"brief": "Shenzhen Fuman Battery Management, 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",
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"package": "ESOP-8",
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"category": "Power Management (PMIC)",
"subcategory": "Battery Management",
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"digikey": {
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"status": "quota"
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"name": "VIN",
"type": "power_in",
"description": "Chip supply input, with a recommended range of 4.6 V to 5.5 V, an operating range of 3.6 V to 7.0 V, and an absolute maximum of 8.0 V with no signal applied."
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{
"number": "2",
"name": "AGND",
"type": "power_in",
"description": "Analog ground, which must be connected together with the power ground PGND."
},
{
"number": "3",
"name": "SW",
"type": "input",
"description": "Switch node connected to the inductor; the trace should be kept as short as possible to reduce EMI."
},
{
"number": "4",
"name": "VBS",
"type": "power_out",
"description": "Boost converter output, with the C5 capacitor placed close to this pin in the typical application circuit."
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{
"number": "5",
"name": "BAT",
"type": "power_in",
"description": "Battery positive connection; the float charge voltage is 8.5 V (8.45 V to 8.55 V) and the battery overvoltage protection voltage is 8.90 V."
},
{
"number": "6",
"name": "ISET",
"type": "input",
"description": "Charge current control pin; a resistor from ISET to GND sets the constant-current charge level, with the ISET constant-current clamp voltage at 1 V."
},
{
"number": "7",
"name": "EN",
"type": "input",
"description": "Multiplexed VIN voltage detection and shutdown pin; EN below 1.2 V limits the charge current through the adaptive input loop, and EN below 0.3 V shuts the chip down."
},
{
"number": "8",
"name": "LED",
"type": "output",
"description": "Charge status indicator output, which stays on during charging, turns off when charging is complete, and blinks at 1 Hz on input/output overvoltage, output undervoltage or short circuit, over-temperature, or no battery."
},
{
"number": "9",
"name": "PGND",
"type": "power_in",
"description": "Power ground on the exposed thermal pad, which must be soldered reliably and connected to a large copper ground area for heat dissipation."
}
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],
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"at": "2026-10-17T22:46:04"
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"name": "芯片静态电流",
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"name": "放大倍数",
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