component
SQ9912MST
Public Made by Adomby adom
Sequoia Microelectronics LED Drivers, SO-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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"title": "SQ9912MST",
"brief": "Sequoia Microelectronics LED Drivers, SO-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"version": "0.1.0",
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"manufacturer": "Sequoia Microelectronics",
"package": "SO-8",
"pin_count": 8,
"category": "LED Drivers",
"subcategory": "LED Drivers",
"datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588910905275404288",
"parts": {
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"lbr": "sq9912mst.lbr"
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"distributor_links": {
"lcsc": "C254128"
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"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": null,
"status": "no match"
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"mouser": {
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{
"number": "1",
"name": "VIN",
"type": "power_in",
"description": "High-voltage input pin, specified for a DC input voltage of 15.0 V to 500 V, with an absolute maximum rating of -0.5 V to +520 V to GND."
},
{
"number": "2",
"name": "CS",
"type": "input",
"description": "Senses the LED string current through the external source sense resistor, with a peak current sense threshold of 250 mV (225 mV to 275 mV) and an absolute rating of -0.3 V to (VDD + 0.3 V)."
},
{
"number": "3",
"name": "GND",
"type": "power_in",
"description": "Device ground; all voltages in the datasheet are referenced to this pin."
},
{
"number": "4",
"name": "GATE",
"type": "output",
"description": "Drives the gate of the external power MOSFET, with a high output of VDD - 0.3 V minimum and a low output of 0.3 V maximum, and an absolute rating of -0.3 V to (VDD + 0.3 V)."
},
{
"number": "5",
"name": "PWM_D",
"type": "input",
"description": "Low-frequency PWM dimming input that also acts as the enable, with input low at 1.0 V maximum and input high at 2.4 V minimum, an internal 200 kΩ pull-down to GND, and an absolute rating of -0.3 V to (VDD - 0.3 V)."
},
{
"number": "6",
"name": "VDD",
"type": "power_out",
"description": "Internally regulated supply, 7.5 V nominal for SQ9912 and 10 V nominal for SQ9912A, which can supply up to 1 mA to external circuitry and has a maximum voltage of 13.5 V when an external voltage is applied."
},
{
"number": "7",
"name": "OLP",
"type": "input",
"description": "Open-loop protection pin used to detect whether LED loading is present, with an internal 100 kΩ pull-up to VDD and an absolute rating of -0.3 V to (VDD - 0.3 V)."
},
{
"number": "8",
"name": "ROSC",
"type": "passive",
"description": "Oscillator control: a resistor from this pin to GND sets the PWM frequency per FOSC = 25000/(ROSC[kΩ] + 22) kHz, over a range of 25 kHz to 300 kHz."
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"name": "Input DC supply voltage range",
"symbol": "VINDC",
"kind": "electrical",
"unit": "V",
"min": 15,
"typ": null,
"max": 500,
"conditions": "DC input voltage",
"source_page": 3,
"source": "datasheet"
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{
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"conditions": "VIN = 20 - 500V, lDD(ext)= 0, VDD pin Gate open",
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{
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"symbol": "VDDmax",
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{
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"min": null,
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{
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{
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{
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{
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"min": 225,
"typ": 250,
"max": 275,
"conditions": "@TA = -40°C to +85°C",
"source_page": 3,
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{
"name": "GATE low output voltage",
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"kind": "electrical",
"unit": "V",
"min": 0,
"typ": null,
"max": 0.3,
"conditions": "IOUT = -10mA",
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{
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"min": 20,
"typ": 25,
"max": 30,
"conditions": "ROSC = 1.00MΩ",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Oscillator frequency (ROSC = 226kΩ)",
"symbol": "fOSC",
"kind": "electrical",
"unit": "kHz",
"min": 80,
"typ": 100,
"max": 120,
"conditions": "ROSC = 226kΩ",
"source_page": 3,
"source": "datasheet"
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{
"name": "Maximum oscillator PWM duty cycle",
"symbol": "DMAXhf",
"kind": "electrical",
"unit": "%",
"min": null,
"typ": null,
"max": 100,
"conditions": "FPWMhf = 25kHz, at GATE, CS to GND.",
"source_page": 3,
"source": "datasheet"
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{
"name": "Linear dimming pin voltage range",
"symbol": "VLD",
"kind": "electrical",
"unit": "mV",
"min": 0,
"typ": null,
"max": 250,
"conditions": "@TA = <85°C, VIN = 20V",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Current sense blanking interval",
"symbol": "TBLANK",
"kind": "timing",
"unit": "ns",
"min": 160,
"typ": 250,
"max": 440,
"conditions": "VCS = 0.5V",
"source_page": 3,
"source": "datasheet"
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{
"name": "Delay from CS trip to GATE lo",
"symbol": "tDELAY",
"kind": "timing",
"unit": "ns",
"min": null,
"typ": null,
"max": 300,
"conditions": "VIN = 20V, VLD = 0.15, VCS = 0 to 0.22V after TBLANK",
"source_page": 3,
"source": "datasheet"
},
{
"name": "GATE output rise time",
"symbol": "tRISE",
"kind": "timing",
"unit": "ns",
"min": null,
"typ": 30,
"max": 50,
"conditions": "CGATE = 500pF",
"source_page": 3,
"source": "datasheet"
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{
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"conditions": "CGATE = 500pF",
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{
"name": "Soft-start time",
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"min": 300,
"typ": 400,
"max": 500,
"conditions": "From appearance of pulses at DRIVER pin to increase Duty Cycle more 50%",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Input DC supply voltage range absolute limit VIN to GND",
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"min": -0.5,
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"max": 520,
"conditions": "",
"source_page": 2,
"source": "datasheet"
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{
"name": "VDD(MAX)",
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"unit": "V",
"min": null,
"typ": null,
"max": 13.5,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Continuous power dissipation, 8 Pin SO",
"symbol": "",
"kind": "absolute_maximum",
"unit": "mW",
"min": null,
"typ": null,
"max": 630,
"conditions": "TA = 25C",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Junction temperature range",
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"min": null,
"typ": null,
"max": 125,
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"source": "datasheet"
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{
"name": "Storage temperature range",
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"unit": "°C",
"min": -65,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Operating temperature range",
"symbol": "TA",
"kind": "recommended_operating",
"unit": "°C",
"min": -40,
"typ": null,
"max": 85,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Shut-down mode supply current (SQ9912)",
"symbol": "IInsd",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": 0.5,
"max": 1,
"conditions": "Pin PWM_D to GND, VIN = 20V",
"source_page": 3,
"source": "datasheet"
},
{
"name": "VDD under voltage lockout hysteresis (SQ9912)",
"symbol": "∆UVLO",
"kind": "electrical",
"unit": "mV",
"min": null,
"typ": 500,
"max": null,
"conditions": "Vin falling",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Thermal Shutdown",
"symbol": "TSD",
"kind": "thermal",
"unit": "C",
"min": null,
"typ": 150,
"max": null,
"conditions": "",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Thermal Shutdown Hysteresis",
"symbol": "TSDH",
"kind": "thermal",
"unit": "C",
"min": null,
"typ": 50,
"max": null,
"conditions": "",
"source_page": 3,
"source": "datasheet"
}
]
}
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