component
LT3573IMSE#TRPBF
Public Made by Adomby adom
Analog Devices AC-DC Controllers And Regulators, MSOP-16-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"number": "1",
"name": "GND",
"type": "power_in",
"description": "Ground pin for the LT3573 control and power circuitry."
},
{
"number": "2",
"name": "TEST",
"type": "input",
"description": "Test pin used for testing only, which must be connected to ground for the part to operate properly."
},
{
"number": "3",
"name": "GND",
"type": "power_in",
"description": "Ground pin for the LT3573 control and power circuitry."
},
{
"number": "4",
"name": "SW",
"type": "output",
"description": "Collector node of the integrated 1.25A, 60V NPN output switch that carries large currents, so its traces should be kept as short as possible; SW absolute maximum is 60V."
},
{
"number": "5",
"name": "VIN",
"type": "power_in",
"description": "Input supply pin for start-up circuitry and the reference for the DCM comparator and feedback; operates from 3V to 40V and must be locally bypassed with a capacitor."
},
{
"number": "6",
"name": "BIAS",
"type": "power_in",
"description": "Supplies current to the switch driver and internal circuitry, regulated to 2.9V to 3.1V at 30mA, and must be locally bypassed; it may tie to VIN only if no third winding is used and VIN is 15V or less."
},
{
"number": "7",
"name": "SHDN/UVLO",
"type": "input",
"description": "Shutdown and undervoltage lockout pin, where a resistor divider from VIN sets the minimum operating input voltage; the rising threshold is 1.15V to 1.29V (1.22V typ) with 2.5µA hysteresis current, and the absolute maximum is 40V."
},
{
"number": "8",
"name": "GND",
"type": "power_in",
"description": "Ground pin for the LT3573 control and power circuitry."
},
{
"number": "9",
"name": "GND",
"type": "power_in",
"description": "Ground pin for the LT3573 control and power circuitry."
},
{
"number": "10",
"name": "TC",
"type": "passive",
"description": "Output voltage temperature compensation pin, where a resistor to ground sets a PTAT current ITC = 0.55V/RTC sourced into RREF; the absolute maximum is 5V."
},
{
"number": "11",
"name": "RREF",
"type": "passive",
"description": "External ground-referred reference resistor pin, nominally about 6k though not required to be exact, with an absolute maximum of 5V."
},
{
"number": "12",
"name": "RFB",
"type": "input",
"description": "External feedback resistor input connected to the transformer primary (VSW), carrying about 200µA average during flyback; the absolute maximum is 40V."
},
{
"number": "13",
"name": "VC",
"type": "passive",
"description": "Compensation pin for the internal error amplifier, requiring a series RC to ground and an optional 100pF capacitor in parallel; the absolute maximum is 5V."
},
{
"number": "14",
"name": "RILIM",
"type": "passive",
"description": "Maximum current limit adjust pin, where a resistor to ground sets the switch current limit and a 10k resistor gives full switch current capability (1.25A min, 1.55A typ, 1.85A max); the absolute maximum is 5V."
},
{
"number": "15",
"name": "SS",
"type": "passive",
"description": "Soft-start pin, where a capacitor limits start-up inrush current and output voltage ramp rate, and switching begins when the voltage reaches about 0.7V; the absolute maximum is 5V."
},
{
"number": "16",
"name": "GND",
"type": "power_in",
"description": "Ground pin for the LT3573 control and power circuitry."
},
{
"number": "17",
"name": "EXPOSED PAD",
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}
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"5/17 pins cited to the wrong page (name found elsewhere): ['11:RREF@p5', '13:VC@p5', '14:RILIM@p5', '16:GND@p5']"
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"min": 1.2,
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{
"name": "RREF Voltage Line Regulation",
"symbol": "",
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"min": null,
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"max": 0.03,
"conditions": "3V < VIN < 40V",
"source_page": 2,
"source": "datasheet"
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{
"name": "RREF Pin Bias Current",
"symbol": "",
"kind": "electrical",
"unit": "nA",
"min": null,
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"max": 600,
"conditions": "l, Note 3",
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{
"name": "BIAS Pin Voltage",
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"name": "Soft-Start Threshold",
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"name": "Maximum Switching Frequency",
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"name": "IREF Reference Current",
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"min": null,
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"max": null,
"conditions": "Measured at RFB pin with RREF = 6.49k",
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"name": "Error Amplifier Voltage Gain",
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"min": null,
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"conditions": "VIN = 3V",
"source_page": 3,
"source": "datasheet"
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{
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"conditions": "DI = 10µA, VIN = 3V",
"source_page": 3,
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{
"name": "Minimum Switching Frequency",
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"conditions": "VC = 0.35V",
"source_page": 3,
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{
"name": "TC Current into RREF",
"symbol": "",
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"min": null,
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"max": null,
"conditions": "RTC = 20.1k",
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{
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{
"name": "Thermal Resistance, Junction to Case",
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"min": null,
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"max": null,
"conditions": "",
"source_page": 2,
"source": "datasheet"
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