component
UCC2895QDWRQ1
Public Made by Adomby adom
Texas Instruments DC-DC Converters, SOIC-20-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
Ray
ucc2895qdwrq1: specified limits as data (metadata.characteristics, 60 rows from the datasheet)
175443a
25d ago
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"name": "EAN",
"type": "input",
"description": "Inverting input to the error amplifier, which must be kept below 3.6 V for proper operation."
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{
"number": "2",
"name": "EAOUT",
"type": "bidirectional",
"description": "Error amplifier output, internally clamped to the soft-start voltage and feeding the PWM and no-load comparators, which shut the outputs down below 500 mV and re-enable them above 600 mV."
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{
"number": "3",
"name": "RAMP",
"type": "input",
"description": "Inverting input of the PWM comparator, receiving the CT waveform in voltage or average-current mode or the current signal plus slope compensation in peak-current mode."
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{
"number": "4",
"name": "REF",
"type": "output",
"description": "5-V ±1.2% reference that can supply up to 5 mA to external loads, with no more than 1 µF of total capacitance on this pin."
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{
"number": "5",
"name": "GND",
"type": "power_in",
"description": "Ground for all circuits except the output stages, and must be electrically tied to PGND."
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{
"number": "6",
"name": "SYNC",
"type": "bidirectional",
"description": "Oscillator synchronization pin that outputs the internal clock or accepts an external clock, with a level-sensitive input threshold of 1.9 V low and 2.1 V high."
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{
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"name": "CT",
"type": "input",
"description": "Oscillator timing capacitor charged by a programmed current to a 2.35 V sawtooth peak, with CT ranging from 100 pF to 880 pF."
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{
"number": "8",
"name": "RT",
"type": "input",
"description": "Oscillator timing resistor that sets the switching frequency, with RT ranging from 40 kΩ to 120 kΩ."
},
{
"number": "9",
"name": "DELAB",
"type": "input",
"description": "Programs the dead time between OUTA and OUTB, can source approximately 1 mA maximum, is clamped to a minimum of 0.5 V, and tying it to REF defeats the programmed delay."
},
{
"number": "10",
"name": "DELCD",
"type": "input",
"description": "Programs the dead time between OUTC and OUTD, can source approximately 1 mA maximum, is clamped to a minimum of 0.5 V, and tying it to REF defeats the programmed delay."
},
{
"number": "11",
"name": "ADS",
"type": "input",
"description": "Adaptive delay set input, which must be limited to between 0 V and 2.5 V and must be less than or equal to CS."
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{
"number": "12",
"name": "CS",
"type": "input",
"description": "Current-sense input for cycle-by-cycle current limiting, with an overcurrent threshold of 2.5 V that initiates a soft stop."
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{
"number": "13",
"name": "OUTD",
"type": "output",
"description": "100-mA CMOS driver output for the second half-bridge, phase shifted with respect to OUTB."
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{
"number": "14",
"name": "OUTC",
"type": "output",
"description": "100-mA CMOS driver output for the second half-bridge, phase shifted with respect to OUTA."
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{
"number": "15",
"name": "VDD",
"type": "power_in",
"description": "Power-supply input that must be bypassed with a minimum of 1 µF low-ESR, low-ESL capacitor to ground."
},
{
"number": "16",
"name": "PGND",
"type": "power_in",
"description": "Output-stage power ground that carries high current, so its board traces must be low impedance and electrically tied to GND."
},
{
"number": "17",
"name": "OUTB",
"type": "output",
"description": "100-mA CMOS driver output for the first half-bridge, fully complementary to OUTA assuming no programmed delay."
},
{
"number": "18",
"name": "OUTA",
"type": "output",
"description": "100-mA CMOS driver output for the first half-bridge, operating near 50% duty cycle at one-half the oscillator frequency."
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{
"number": "19",
"name": "SS/DISB",
"type": "input",
"description": "Combined soft-start and disable pin, where forcing it below 0.5 V disables the chip and it sources current equal to IRT during soft start."
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{
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"name": "EAP",
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"name": "Reference bypass capacitor",
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"min": -55,
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"name": "Start-up voltage threshold",
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"min": 10.2,
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"name": "Minimum operating voltage after start-up",
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"name": "Start-up current",
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"name": "VDD clamp voltage",
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"name": "Output voltage",
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{
"name": "Output voltage",
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"min": 4.85,
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{
"name": "Short-circuit current",
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{
"name": "Common-mode input voltage",
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{
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{
"name": "High-level output voltage",
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"min": 4,
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"conditions": "EAP – EAN = 500 mV, IEAOUT = –0.5 mA",
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{
"name": "Low-level output voltage",
"symbol": "VOL_EAOUT",
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"conditions": "EAP – EAN = –500 mV, IEAOUT = 0.5 mA",
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"name": "Error amplifier output source current",
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"kind": "electrical",
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"conditions": "EAP – EAN = 500 mV, EAOUT = 2.5 V",
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{
"name": "Error amplifier output sink current",
"symbol": "ISINK",
"kind": "electrical",
"unit": "mA",
"min": 2.5,
"typ": null,
"max": 4.5,
"conditions": "EAP – EAN = –500 mV, EAOUT = 2.5 V",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Open-loop dc gain",
"symbol": "AVOL",
"kind": "electrical",
"unit": "dB",
"min": 75,
"typ": null,
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{
"name": "Unity gain bandwidth",
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"min": 5,
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{
"name": "Slew rate",
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"kind": "electrical",
"unit": "V/μs",
"min": 1.5,
"typ": null,
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"conditions": "1 V < EAN < 0 V, EAP = 500 mV, 0.5 V < EAOUT < 3 V",
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{
"name": "No-load comparator turn-off threshold",
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"min": 0.45,
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"name": "No-load comparator turn-on threshold",
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{
"name": "No-load comparator hysteresis",
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"min": 0.035,
"typ": 0.1,
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{
"name": "Frequency",
"symbol": "fOSC",
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"min": 473,
"typ": 500,
"max": 527,
"conditions": "TJ = 25°C",
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{
"name": "Frequency total variation",
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"kind": "tolerance",
"unit": "%",
"min": null,
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"conditions": "Over line and temperature",
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{
"name": "High-level input voltage, SYNC",
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"min": 4.1,
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"max": 5,
"conditions": "ISYNC = –400 μA, VCT = 2.6 V",
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{
"name": "SYNC output pulse width",
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},
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"name": "Timing resistor voltage",
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