component
LM5071MTX-50
Public Made by Adomby adom
Texas Instruments Power Over Ethernet (PoE) Controllers, TSSOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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"component": {
"mpn": "LM5071MTX-50",
"manufacturer": "Texas Instruments",
"package": "TSSOP-16",
"pin_count": 16,
"category": "Power Management (PMIC)",
"subcategory": "Power Over Ethernet (PoE) Controllers",
"datasheet": "https://www.ti.com/lit/ds/symlink/lm5071.pdf",
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"lcsc": "C2864953",
"digikey": "LM5071MTX-50-ND",
"mouser": "926-LM5071MTX-50"
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"description": "System high potential input, the more positive input potential of the diode OR'd supply lines entering the PD."
},
{
"number": "2",
"name": "RSIG",
"type": "passive",
"description": "Signature resistor pin; a resistor connected from VIN to this pin is used for signature detection and sits in parallel with the UVLO resistors."
},
{
"number": "3",
"name": "RCLASS",
"type": "passive",
"description": "Classification resistor pin; the classification programming resistor connects from this pin to VEE."
},
{
"number": "4",
"name": "AUX",
"type": "input",
"description": "Auxiliary input power startup pin with a 2.5V threshold, programmed by a resistor divider to VEE, with an internal pull-down above 300kΩ if left open."
},
{
"number": "5",
"name": "UVLO",
"type": "input",
"description": "Line under-voltage lockout pin with a 2.00V threshold, programmed by an external resistor divider from VIN to UVLORTN with 10uA hysteresis current."
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{
"number": "6",
"name": "UVLORTN",
"type": "passive",
"description": "Return for the external UVLO resistors, connected to the bottom resistor of the UVLO divider."
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{
"number": "7",
"name": "VEE",
"type": "power_in",
"description": "System low potential input, the more negative input potential of the diode OR'd supply lines, such as the PSE -48V supply."
},
{
"number": "8",
"name": "RTN",
"type": "power_in",
"description": "System return for the PWM converter, being the drain of the internal current limiting power MOSFET that connects VEE to the dc-dc converter return path."
},
{
"number": "9",
"name": "OUT",
"type": "output",
"description": "Output of the PWM controller driving the DC-DC converter gate, with 800mA peak sink current capability."
},
{
"number": "10",
"name": "VCC",
"type": "power_out",
"description": "Output of the internal high voltage series pass regulator, nominally regulated to 7.8V."
},
{
"number": "11",
"name": "FB",
"type": "input",
"description": "Feedback signal, the inverting input of the internal error amplifier, with the non-inverting input tied to a 1.25V reference."
},
{
"number": "12",
"name": "COMP",
"type": "output",
"description": "Output of the error amplifier and input to the PWM comparator, with an internal 5K pull-up resistor usable to bias an opto-coupler transistor."
},
{
"number": "13",
"name": "CS",
"type": "input",
"description": "Current sense input for current mode control and over-current protection, where the OUT pin switches low if CS exceeds 0.5V."
},
{
"number": "14",
"name": "RT / SYNC",
"type": "input",
"description": "Oscillator timing resistor pin, with an external resistor to ARTN setting the oscillator frequency, which also accepts narrow ac-coupled synchronization pulses."
},
{
"number": "15",
"name": "SS",
"type": "passive",
"description": "Soft-start input where an external capacitor and an internal 10uA current source set the soft-start ramp rate."
},
{
"number": "16",
"name": "ARTN",
"type": "power_in",
"description": "Analog PWM supply return for sensitive analog circuitry, including the SMPS current limit amplifier."
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