component
NCP1631DR2G
Public Made by Adomby adom
onsemi AC-DC Controllers And Regulators, SOIC-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": null,
"status": "quota"
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"pins": [
{
"number": "1",
"name": "ZCD2",
"type": "input",
"description": "Zero current detection input for phase 2 of the interleaved PFC stage; apply the auxiliary winding voltage to detect inductor core reset and the MOSFET drain-source valley."
},
{
"number": "2",
"name": "FB",
"type": "input",
"description": "Receives a portion of the pre-converter output voltage for regulation and 'output low' detection (VOUTL), which speeds up the loop response when the output drops below 95.5% of the wished level."
},
{
"number": "3",
"name": "Rt",
"type": "passive",
"description": "A resistor between this pin and ground adjusts the maximum on-time for both phases and hence the maximum power the PFC stage can deliver."
},
{
"number": "4",
"name": "OSC",
"type": "passive",
"description": "Connect a capacitor to set the clamp frequency of the PFC stage; the circuit delays the next cycle until the core is reset, so the stage can operate in Critical Conduction Mode."
},
{
"number": "5",
"name": "Vcontrol",
"type": "output",
"description": "Error amplifier output; the capacitor to ground sets the regulation loop bandwidth (typically below 20 Hz), and the pin is grounded when the circuit is off to give a soft-start."
},
{
"number": "6",
"name": "FFOLD",
"type": "passive",
"description": "A resistor to ground adjusts the oscillator charge current, clamped not to exceed 100 µA and proportional to power level, for frequency fold-back at light load."
},
{
"number": "7",
"name": "BO",
"type": "input",
"description": "Brown-out detection input fed with an averaged portion of the input voltage; a 50-ms internal delay blanks short mains interruptions, a 7-µA current source gives programmable hysteresis, and grounding the pin disables the part."
},
{
"number": "8",
"name": "OVP / UVP",
"type": "input",
"description": "Output over/under-voltage sense; the circuit turns off when the pin goes below 480 mV (UVP) and disables the drive while the pin exceeds 2.5 V (OVP)."
},
{
"number": "9",
"name": "CS",
"type": "input",
"description": "Monitors a negative voltage proportional to the coil current, used to limit the maximum coil current and protect against in-rush currents."
},
{
"number": "10",
"name": "Latch",
"type": "input",
"description": "Applying a voltage higher than 2.5 V latches off the circuit; reset by a brown-out detection or by forcing VCC below VCCRST (4 V typically)."
},
{
"number": "11",
"name": "DRV2",
"type": "output",
"description": "Gate drive output for phase 2 of the interleaved PFC stage, a totem pole drive with +0.5/-0.8 A capability."
},
{
"number": "12",
"name": "VCC",
"type": "power_in",
"description": "Positive supply of the IC; starts operating when VCC exceeds 12 V and turns off below 10 V (typical), with an operating range of 9.5 V to 20 V after start-up."
},
{
"number": "13",
"name": "GND",
"type": "power_in",
"description": "Connect to the pre-converter ground."
},
{
"number": "14",
"name": "DRV1",
"type": "output",
"description": "Gate drive output for phase 1 of the interleaved PFC stage, a totem pole drive with +0.5/-0.8 A capability."
},
{
"number": "15",
"name": "REF5V/pfcOK",
"type": "output",
"description": "High (5 V) when the PFC stage is in normal steady state and low otherwise, informing the downstream converter that the PFC stage is ready."
},
{
"number": "16",
"name": "ZCD1",
"type": "input",
"description": "Zero current detection input for phase 1 of the interleaved PFC stage; apply the auxiliary winding voltage to detect inductor core reset and the MOSFET drain-source valley."
}
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],
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"at": "2026-10-18T17:32:21"
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{
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{
"name": "Internal Logic Reset",
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"min": 4,
"typ": 5.75,
"max": 7.5,
"conditions": "VCC decreasing",
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{
"name": "Startup current",
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"unit": "µA",
"min": null,
"typ": 35,
"max": 100,
"conditions": "VCC = 9.4 V",
"source_page": 3,
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{
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"symbol": "ICC1",
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"unit": "mA",
"min": null,
"typ": 5,
"max": 7,
"conditions": "Device Enabled/No output load on pin6; Fsw = 130 kHz (Note 4)",
"source_page": 3,
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},
{
"name": "Clamping Charging Current",
"symbol": "IOSC(clamp)",
"kind": "electrical",
"unit": "µA",
"min": 30,
"typ": 35,
"max": 38.5,
"conditions": "Pin 6 open; TJ = −55°C to +125°C (Note 6)",
"source_page": 3,
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{
"name": "Charge Current with no frequency foldback",
"symbol": "IOSC(CH1)",
"kind": "electrical",
"unit": "µA",
"min": 120,
"typ": 140,
"max": 154,
"conditions": "Pin 6 grounded; TJ = −55°C to +125°C (Note 6)",
"source_page": 3,
"source": "datasheet"
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{
"name": "Maximum Discharge Current with no frequency foldback",
"symbol": "IOSC(DISCH1)",
"kind": "electrical",
"unit": "µA",
"min": 90,
"typ": 105,
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"conditions": "Pin 6 grounded; TJ = −55°C to +125°C (Note 6)",
"source_page": 3,
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{
"name": "Current Sense Protection Threshold",
"symbol": "IILIM1",
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"conditions": "TJ = 25°C",
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{
"name": "Current Sense Protection Threshold",
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"conditions": "TJ = −55°C to +125°C (Note 6)",
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{
"name": "Threshold for In-rush Current Detection",
"symbol": "Iin−rush",
"kind": "electrical",
"unit": "µA",
"min": 10.4,
"typ": 14,
"max": 17,
"conditions": "TJ = −55°C to +125°C",
"source_page": 3,
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{
"name": "Drive Resistance DRV1 Sink",
"symbol": "RSNK1",
"kind": "electrical",
"unit": "Ω",
"min": null,
"typ": 7,
"max": 15,
"conditions": "Ipin14 = 100 mA",
"source_page": 3,
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{
"name": "Drive Resistance DRV1 Source",
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"kind": "electrical",
"unit": "Ω",
"min": null,
"typ": 15,
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{
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"conditions": "Ipin11 = 100 mA",
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{
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{
"name": "Feedback Voltage Reference",
"symbol": "VREF",
"kind": "electrical",
"unit": "V",
"min": 2.44,
"typ": 2.5,
"max": 2.56,
"conditions": "",
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},
{
"name": "Pin 5 Source Current when (Vout(low) Detect) is activated",
"symbol": "IControl(boost)",
"kind": "electrical",
"unit": "µA",
"min": 178,
"typ": 230,
"max": 276,
"conditions": "TJ = −55°C to +125°C (Note 6)",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Pin 5 Voltage",
"symbol": "VControl(clamp)",
"kind": "electrical",
"unit": "V",
"min": 3,
"typ": 3.6,
"max": 4.2,
"conditions": "@ Vpin2 = 2.4 V",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Pin 5 Voltage",
"symbol": "VControl(MIN)",
"kind": "electrical",
"unit": "V",
"min": 0,
"typ": 0.6,
"max": 1.2,
"conditions": "@ Vpin2 = 2.6 V",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Pin 5 Voltage range",
"symbol": "VControl(range)",
"kind": "electrical",
"unit": "V",
"min": 2.7,
"typ": 3,
"max": 3.3,
"conditions": "",
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},
{
"name": "Ratio (Vout(low) Detect Threshold / VREF)",
"symbol": "Vout(low)/VREF",
"kind": "electrical",
"unit": "%",
"min": 95,
"typ": 95.5,
"max": 96,
"conditions": "FB falling",
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{
"name": "Duty Cycle",
"symbol": "DMIN",
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"unit": "%",
"min": null,
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"conditions": "Vpin2 = 3 V",
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},
{
"name": "Maximum DRV1 and DRV2 On-Time",
"symbol": "ton1",
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"unit": "µs",
"min": 13,
"typ": 19.5,
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"conditions": "TJ = −55°C to +125°C; Vpin7 = 1.1 V, Ipin3 = 50 µA (Note 6)",
"source_page": 5,
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},
{
"name": "Maximum DRV1 and DRV2 On-Time",
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{
"name": "Maximum DRV1 and DRV2 On-Time",
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"typ": 5,
"max": 6,
"conditions": "TJ = −55°C to +125°C; Vpin7 = 2.2 V, Ipin3 = 100 µA (Note 5)",
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{
"name": "Maximum DRV1 and DRV2 On-Time",
"symbol": "ton4",
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"typ": 0.41,
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},
{
"name": "Pin 3 voltage",
"symbol": "VRt1",
"kind": "electrical",
"unit": "V",
"min": 1.071,
"typ": 1.096,
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{
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"kind": "electrical",
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"typ": 2.196,
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{
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"kind": "electrical",
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"typ": null,
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{
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},
{
"name": "ZCD Threshold Voltage",
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"unit": "V",
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