component
BD9611MUV-E2
Public Made by Adomby adom
ROHM Semicon DC-DC Converters, VQFN-20-EP(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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"description": "ROHM Semicon DC-DC Converters, VQFN-20-EP(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
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"power management ics",
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"component": {
"mpn": "BD9611MUV-E2",
"manufacturer": "ROHM Semicon",
"package": "VQFN-20-EP(4x4)",
"pin_count": 21,
"category": "Power Management ICs",
"subcategory": "DC-DC Converters",
"datasheet": "https://datasheet.lcsc.com/datasheet/pdf/7cc9934cd5a6660997049eff533d935c.pdf",
"parts": {
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"lbr": "bd9611muv-e2.lbr"
},
"distributor_links": {
"lcsc": "C2657952",
"digikey": "BD9611MUV-E2TR-ND",
"mouser": "755-BD9611MUV-E2"
},
"distributor_check": {
"checked_at": "2026-10-31T12:22:26Z",
"source": "Component Ocean /api/assign-pns",
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"pn": "BD9611MUV-E2TR-ND",
"status": "found",
"lifecycle": "Active"
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"pn": "755-BD9611MUV-E2",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "GND",
"type": "power_in",
"description": "Ground pin."
},
{
"number": "2",
"name": "SS",
"type": "passive",
"description": "Programmable soft-start pin; capacitor charged by 1uA internal source, soft-start time tss = (CSS×0.8V)/1uA."
},
{
"number": "3",
"name": "INV",
"type": "input",
"description": "Inverting input to the error amplifier, compared to the 0.8V (±1%) reference, with compensation connected between INV and FB."
},
{
"number": "4",
"name": "FB",
"type": "output",
"description": "Output of the error amplifier, used as the PWM control signal with phase compensation connected to INV."
},
{
"number": "5",
"name": "RCL",
"type": "passive",
"description": "Programmable current limit setting; the RCL resistor sets the CLH-CLL over-current threshold."
},
{
"number": "6",
"name": "RT",
"type": "passive",
"description": "Programmable frequency setting; resistor to GND sets oscillator frequency in the 50kHz to 500kHz range, FOSC = 15900 × RRT^-0.955 kHz."
},
{
"number": "7",
"name": "RTSS",
"type": "passive",
"description": "Reference voltage pin for RT (0.5V buffered), with a 0.01uF capacitor to ground recommended."
},
{
"number": "8",
"name": "CLKOUT",
"type": "output",
"description": "Internal clock pulse output, a square wave synchronized to the oscillator for master-slave synchronization."
},
{
"number": "9",
"name": "PGND",
"type": "power_in",
"description": "Power ground pin."
},
{
"number": "10",
"name": "SYNC",
"type": "input",
"description": "Synchronization input accepting external clock of 50 to 500kHz (±10% of free-run), high level 2.8V to 5.0V, pulse width over 500ns; connect to GND when not configured as slave."
},
{
"number": "11",
"name": "LG",
"type": "output",
"description": "Gate driver output for the external low-side N-channel FET."
},
{
"number": "12",
"name": "REG10",
"type": "power_out",
"description": "Output of the 10V internal regulator (9 to 11V) supplying the low-side driver; needs a 1.0uF ceramic capacitor to GND and limits current to 20mA when shorted to GND."
},
{
"number": "13",
"name": "LX",
"type": "passive",
"description": "Connects to the switching node of the converter."
},
{
"number": "14",
"name": "HG",
"type": "output",
"description": "Gate driver output for the external high-side N-channel FET."
},
{
"number": "15",
"name": "BST",
"type": "power_in",
"description": "Gate drive voltage input for the high-side N-channel FET, charged from REG10 through an internal switch with a capacitor to LX."
},
{
"number": "16",
"name": "CLL",
"type": "input",
"description": "Inverting input to the current detector for high-side current sensing (CLH-CLL)."
},
{
"number": "17",
"name": "CLH",
"type": "input",
"description": "Input to the current detector for high-side current sensing (CLH-CLL)."
},
{
"number": "18",
"name": "VCC",
"type": "power_in",
"description": "Power supply input, 10V to 56V."
},
{
"number": "19",
"name": "CTL",
"type": "input",
"description": "Shutdown/enable pin: IC turns off below 0.3V, regulators on above 2.4V, DRV on above 2.8V, EXUVLO threshold 2.6V (±3%) with 20uA (±25%) current source, clamped at 5.6V through 100kΩ."
},
{
"number": "20",
"name": "REG5",
"type": "power_out",
"description": "Output of the 5V (±2%) internal regulator, usable externally up to 2mA max with a 0.1uF ceramic capacitor to GND."
},
{
"number": "21",
"name": "EP",
"type": "passive",
"description": "Thermal pad; connecting it to GND is recommended to improve thermal dissipation."
}
],
"provenance": {
"extractor": "extract_pins 0.3",
"factory_chain": {
"factory": "2.0.0",
"extractor": "extract_pins 0.3",
"primary_model": "claude-sonnet-5-5",
"primary_mode": "text",
"consensus_model": "claude-sonnet-5-5",
"consensus": "agreed",
"guards": "pin_guards 0.1: passed",
"guard_notes": [
"extractor flagged: Thermal pad has no pin number printed in the datasheet; labeled 'EP' / 21 by convention. Datasheet r; Pin types (SS, RCL, RT, RTSS, LX, BST) were inferred from function descriptions; the datasheet gives",
"1/21 pins cited to the wrong page (name found elsewhere): ['21:EP@p2']"
],
"pages_sent": 13,
"cost_usd": 0.1175,
"at": "2026-10-31T12:22:14"
},
"datasheet": {
"url": "https://datasheet.lcsc.com/datasheet/pdf/7cc9934cd5a6660997049eff533d935c.pdf",
"pages": 40,
"sha256": "f372809f61f7b81d",
"source_tier": "mfr"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 21,
"described": 21,
"cites_pages": true,
"refuses_to_fabricate": true
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"checked": "2026-10-31",
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