component
UC2856QDWRQ1
Public Made by Adomby adom
Texas Instruments DC-DC Converters, SOIC-16-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
Ray
uc2856qdwrq1: specified limits as data (metadata.characteristics, 60 rows from the datasheet)
e8bb62f
17d ago
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"manufacturer": "Texas Instruments",
"package": "SOIC-16-300mil",
"pin_count": 16,
"category": "Power Management (PMIC)",
"subcategory": "DC-DC Converters",
"datasheet": "https://www.ti.com/cn/lit/gpn/uc2856-q1",
"parts": {
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"lcsc": "C2658044",
"digikey": "296-23442-2-ND",
"mouser": "595-UC2856QDWRQ1"
},
"distributor_check": {
"checked_at": "2026-10-08T15:50:17Z",
"source": "Component Ocean /api/assign-pns",
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"status": "found",
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"pn": "595-UC2856QDWRQ1",
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},
"pins": [
{
"number": "1",
"name": "CL SS",
"type": "input",
"description": "Current-limit adjust and soft-start terminal; the current drawn into this pin determines whether the shutdown circuit latches or auto-restarts (Figure 7 and footnotes 5 and 6 of the electrical table)."
},
{
"number": "2",
"name": "VREF",
"type": "power_out",
"description": "5.1-V reference output (5.05 V to 5.15 V at IO = 1 mA, TJ = 25°C); short-circuit current is -25 mA to -65 mA with VREF = 0 V."
},
{
"number": "3",
"name": "CS−",
"type": "input",
"description": "Inverting input of the current-sense amplifier; input common-mode range is 0 V to 3 V."
},
{
"number": "4",
"name": "CS+",
"type": "input",
"description": "Non-inverting input of the current-sense amplifier; input common-mode range is 0 V to 3 V."
},
{
"number": "5",
"name": "EA+",
"type": "input",
"description": "Non-inverting input of the error amplifier; common-mode range is 0 V to VIN - 2 V."
},
{
"number": "6",
"name": "EA−",
"type": "input",
"description": "Inverting input of the error amplifier; common-mode range is 0 V to VIN - 2 V."
},
{
"number": "7",
"name": "COMP",
"type": "output",
"description": "Error amplifier output and compensation node; the error amplifier can source up to 0.5 mA."
},
{
"number": "8",
"name": "CT",
"type": "passive",
"description": "Oscillator timing capacitor connection; the output deadtime is determined by the size of CT."
},
{
"number": "9",
"name": "RT",
"type": "passive",
"description": "Oscillator timing resistor connection; oscillator frequency is set by RT and CT (characterized with RT = 10 kΩ and CT = 1 nF)."
},
{
"number": "10",
"name": "SYNC",
"type": "bidirectional",
"description": "TTL-compatible oscillator sync pin: as an output it provides VOH of 2.4 V minimum at -1 mA and VOL of 0.4 V maximum at 1 mA, and it is 3-stated when used as a sync input."
},
{
"number": "11",
"name": "AOUT",
"type": "output",
"description": "Totem-pole output driver A; absolute maximum output current is 0.5 A DC or 2 A pulse (0.5 ms)."
},
{
"number": "12",
"name": "GND",
"type": "power_in",
"description": "Ground reference for all device voltages; all voltages are specified with respect to GND."
},
{
"number": "13",
"name": "VC",
"type": "power_in",
"description": "Collector supply for the output stages; absolute maximum collector supply voltage is 40 V."
},
{
"number": "14",
"name": "BOUT",
"type": "output",
"description": "Totem-pole output driver B; absolute maximum output current is 0.5 A DC or 2 A pulse (0.5 ms)."
},
{
"number": "15",
"name": "VIN",
"type": "power_in",
"description": "Supply voltage input; absolute maximum is 40 V, and the undervoltage lockout startup threshold is 8 V typical."
},
{
"number": "16",
"name": "SHUTDOWN",
"type": "input",
"description": "Shutdown input with a 1.0 V threshold (0.95 V to 1.05 V) and an input voltage range of 0 V to 5 V; absolute maximum is -0.3 V to 10 V."
}
],
"provenance": {
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"factory_chain": {
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"extractor": "extract_pins 0.3",
"primary_model": "claude-haiku-5-5",
"primary_mode": "text",
"consensus_model": "claude-sonnet-5-5",
"consensus": "agreed",
"guards": "pin_guards 0.1: passed",
"guard_notes": [
"extractor flagged: Pin numbers were derived by matching the top-view pin label order (page 1) with the block-diagram pi; The datasheet's Shutdown table row for minimum/maximum latching current into CL SS has unclear min/t; The datasheet gives the DW package as a 16-pin SOIC with a 7.5 mm wide body (7.5 x 10.3 mm outline);"
],
"pages_sent": 19,
"cost_usd": 0.0743,
"at": "2026-10-08T15:49:57"
},
"datasheet": {
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"pages": 19,
"sha256": "51576f2bd2b22621",
"source_tier": "lcsc"
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"pins": {
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"described": 16,
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},
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"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
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"checked": "2026-10-08",
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},
{
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"checked": "2026-10-08",
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}
]
},
"metadata": {
"specs": {
"Manufacturer": "Texas Instruments",
"Package": "SOIC-16-300mil",
"Category": "Power Management (PMIC)",
"Pins": "16"
},
"characteristics": {
"version": 1,
"source": "datasheet",
"datasheet_sha256": "51576f2bd2b22621",
"rows": [
{
"name": "Output voltage",
"symbol": "",
"kind": "electrical",
"unit": "V",
"min": 5.05,
"typ": 5.1,
"max": 5.15,
"conditions": "IO = 1 mA, TJ = 25°C",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Line regulation voltage",
"symbol": "",
"kind": "electrical",
"unit": "mV",
"min": null,
"typ": null,
"max": 20,
"conditions": "VIN = 8 V to 40 V",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Load regulation voltage",
"symbol": "",
"kind": "electrical",
"unit": "mV",
"min": null,
"typ": null,
"max": 15,
"conditions": "IO = –1 mA to –10 mA",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Total output variation",
"symbol": "",
"kind": "electrical",
"unit": "V",
"min": 5,
"typ": null,
"max": 5.2,
"conditions": "Over line, load, and temperature",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Output noise voltage",
"symbol": "",
"kind": "electrical",
"unit": "µV",
"min": null,
"typ": null,
"max": 50,
"conditions": "f = 10 Hz to 10 kHz, TJ = 25°C",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Long term stability",
"symbol": "",
"kind": "electrical",
"unit": "mV",
"min": 5,
"typ": null,
"max": 25,
"conditions": "1000 hours, TJ = 25°C",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Short circuit current",
"symbol": "",
"kind": "electrical",
"unit": "mA",
"min": -25,
"typ": -45,
"max": -65,
"conditions": "VREF = 0 V",
"source_page": 3,
"source": "datasheet"
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{
"name": "Initial accuracy (oscillator frequency)",
"symbol": "",
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"unit": "kHz",
"min": 180,
"typ": 200,
"max": 220,
"conditions": "TJ = 25°C",
"source_page": 3,
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{
"name": "Initial accuracy (oscillator frequency, full range)",
"symbol": "",
"kind": "electrical",
"unit": "kHz",
"min": 170,
"typ": null,
"max": 230,
"conditions": "TJ = Full range",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Voltage stability",
"symbol": "",
"kind": "electrical",
"unit": "%",
"min": null,
"typ": null,
"max": 2,
"conditions": "VIN = 8 V to 40 V",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Discharge current",
"symbol": "",
"kind": "electrical",
"unit": "mA",
"min": 7.5,
"typ": 8,
"max": 8.8,
"conditions": "VCT = 2 V, TJ = 25°C",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Discharge current",
"symbol": "",
"kind": "electrical",
"unit": "mA",
"min": 6.7,
"typ": 8,
"max": 8.8,
"conditions": "VCT = 2 V",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Sync output high level voltage",
"symbol": "",
"kind": "electrical",
"unit": "V",
"min": 2.4,
"typ": null,
"max": 3.6,
"conditions": "IO = –1 mA",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Sync output low level voltage",
"symbol": "",
"kind": "electrical",
"unit": "V",
"min": 0.2,
"typ": null,
"max": 0.4,
"conditions": "IO = 1 mA",
"source_page": 3,
"source": "datasheet"
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{
"name": "Sync input high level voltage",
"symbol": "",
"kind": "electrical",
"unit": "V",
"min": 2,
"typ": null,
"max": null,
"conditions": "CT = 0 V, RT = VREF",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Sync input low level voltage",
"symbol": "",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": null,
"max": 0.8,
"conditions": "CT = 0 V, RT = VREF",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Sync input current",
"symbol": "",
"kind": "electrical",
"unit": "µA",
"min": 1,
"typ": null,
"max": 10,
"conditions": "CT = 0 V, RT = VREF, VSYNC = 5 V",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Sync delay to outputs",
"symbol": "",
"kind": "electrical",
"unit": "ns",
"min": 50,
"typ": null,
"max": 100,
"conditions": "CT = 0 V RT = VREF, VSYNC = 0.8 V to 2 V",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Input offset voltage (error amplifier)",
"symbol": "",
"kind": "electrical",
"unit": "mV",
"min": null,
"typ": null,
"max": 5,
"conditions": "VCM = 2 V",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Input bias current (error amplifier)",
"symbol": "",
"kind": "electrical",
"unit": "µA",
"min": -1,
"typ": null,
"max": null,
"conditions": "",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Input offset current (error amplifier)",
"symbol": "",
"kind": "electrical",
"unit": "nA",
"min": null,
"typ": null,
"max": 500,
"conditions": "",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Common mode range (error amplifier)",
"symbol": "",
"kind": "electrical",
"unit": "V",
"min": 0,
"typ": null,
"max": null,
"conditions": "VIN = 8 V to 40 V; upper limit printed as VIN–2 V",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Open loop gain",
"symbol": "",
"kind": "electrical",
"unit": "dB",
"min": 80,
"typ": null,
"max": 100,
"conditions": "VO = 1.2 V to 3 V",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Unity gain bandwidth",
"symbol": "",
"kind": "electrical",
"unit": "MHz",
"min": 1,
"typ": null,
"max": 1.5,
"conditions": "TJ = 25°C",
"source_page": 4,
"source": "datasheet"
},
{
"name": "CMRR (error amplifier)",
"symbol": "",
"kind": "electrical",
"unit": "dB",
"min": 75,
"typ": null,
"max": 100,
"conditions": "VCM = 0 V to 38 V, VIN = 40 V",
"source_page": 4,
"source": "datasheet"
},
{
"name": "PSRR (error amplifier)",
"symbol": "",
"kind": "electrical",
"unit": "dB",
"min": 80,
"typ": null,
"max": 100,
"conditions": "VIN = 8 V to 40 V",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Output sink current (error amplifier)",
"symbol": "",
"kind": "electrical",
"unit": "mA",
"min": 5,
"typ": null,
"max": 10,
"conditions": "VID = –15 mV, VCOMP = 1.2 V",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Output source current (error amplifier)",
"symbol": "",
"kind": "electrical",
"unit": "mA",
"min": -0.4,
"typ": null,
"max": -0.5,
"conditions": "VID = 15 mV, VCOMP = 2.5 V",
"source_page": 4,
"source": "datasheet"
},
{
"name": "High-level output voltage (error amplifier)",
"symbol": "",
"kind": "electrical",
"unit": "V",
"min": 4.3,
"typ": 4.6,
"max": 4.9,
"conditions": "VID = 50 mV, RL (COMP) = 15 kΩ",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Low-level output voltage (error amplifier)",
"symbol": "",
"kind": "electrical",
"unit": "V",
"min": 0.7,
"typ": null,
"max": 1,
"conditions": "VID = –50 mV, RL (COMP) = 15 kΩ",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Amplifier gain (current sense)",
"symbol": "",
"kind": "electrical",
"unit": "V/V",
"min": 2.5,
"typ": 2.75,
"max": 3,
"conditions": "VCS– = 0 V, CL SS open",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Maximum differential input signal (current sense)",
"symbol": "",
"kind": "electrical",
"unit": "V",
"min": 1.1,
"typ": null,
"max": 1.2,
"conditions": "CL SS open, RL (COMP) = 15 kΩ",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Input offset voltage (current sense)",
"symbol": "",
"kind": "electrical",
"unit": "mV",
"min": 5,
"typ": null,
"max": 35,
"conditions": "VCL SS = 0.5 V, COMP open",
"source_page": 4,
"source": "datasheet"
},
{
"name": "CMRR (current sense)",
"symbol": "",
"kind": "electrical",
"unit": "dB",
"min": 60,
"typ": null,
"max": null,
"conditions": "VCM = 0 V to 3 V",
"source_page": 4,
"source": "datasheet"
},
{
"name": "PSRR (current sense)",
"symbol": "",
"kind": "electrical",
"unit": "dB",
"min": 60,
"typ": null,
"max": null,
"conditions": "VIN = 8 V to 40 V",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Input bias current (current sense)",
"symbol": "",
"kind": "electrical",
"unit": "µA",
"min": -1,
"typ": null,
"max": 1,
"conditions": "VCL SS = 0.5 V, COMP open",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Input offset current (current sense)",
"symbol": "",
"kind": "electrical",
"unit": "µA",
"min": -1,
"typ": null,
"max": 1,
"conditions": "VCL SS = 0.5 V, COMP open",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Input common mode range (current sense)",
"symbol": "",
"kind": "electrical",
"unit": "V",
"min": 0,
"typ": null,
"max": 3,
"conditions": "",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Delay to outputs (current sense)",
"symbol": "",
"kind": "electrical",
"unit": "ns",
"min": 120,
"typ": null,
"max": 250,
"conditions": "VEA+ = VREF, EA– = 0 V, CS+ – CS– = 0 V to 1.5 V",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Current limit offset",
"symbol": "",
"kind": "electrical",
"unit": "V",
"min": 0.4,
"typ": 0.5,
"max": 0.6,
"conditions": "VCS– = 0 V, VCS+ = 0 V, COMP open",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Input bias current (current limit adjust)",
"symbol": "",
"kind": "electrical",
"unit": "µA",
"min": -10,
"typ": null,
"max": -30,
"conditions": "VEA+ = VREF, VEA– = 0 V",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Threshold voltage (SHUTDOWN)",
"symbol": "",
"kind": "electrical",
"unit": "V",
"min": 0.95,
"typ": 1,
"max": 1.05,
"conditions": "",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Input voltage range (SHUTDOWN)",
"symbol": "",
"kind": "electrical",
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