component
VIPER37LDTR
Public Made by Adomby adom
STMicroelectronics AC-DC Controllers And Regulators, SOIC-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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"title": "VIPER37LDTR",
"brief": "STMicroelectronics AC-DC Controllers And Regulators, SOIC-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
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"mpn": "VIPER37LDTR",
"manufacturer": "STMicroelectronics",
"package": "SOIC-16",
"pin_count": 16,
"category": "Power Management (PMIC)",
"subcategory": "AC-DC Controllers And Regulators",
"datasheet": "https://www.st.com/resource/en/datasheet/viper37ldtr.pdf",
"parts": {
"symbol": "viper37ldtr.kicad_sym",
"footprint": "viper37ldtr.kicad_mod",
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"model_3d_plain": "viper37ldtr-etched.glb",
"model_3d_step": "viper37ldtr-etched.step",
"model_3d_step_plain": "viper37ldtr.step",
"lbr": "viper37ldtr.lbr"
},
"distributor_links": {
"lcsc": "C2970148",
"digikey": "497-19427-2-ND",
"mouser": "511-VIPER37LDTR"
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{
"number": "1",
"name": "GND",
"type": "power_in",
"description": "This pin is the device ground and the source of the power section."
},
{
"number": "2",
"name": "GND",
"type": "power_in",
"description": "This pin is the device ground and the source of the power section."
},
{
"number": "3",
"name": "N.C.",
"type": "unconnected",
"description": "Not connected."
},
{
"number": "4",
"name": "N.A.",
"type": "unconnected",
"description": "Not available for user; it is mechanically connected to the controller die pad and is highly recommended to be connected to GND (pins 1-2) to improve noise immunity."
},
{
"number": "5",
"name": "VDD",
"type": "power_in",
"description": "Supply voltage of the control section, which also provides the charging current of the external capacitor during start-up time."
},
{
"number": "6",
"name": "CONT",
"type": "bidirectional",
"description": "Control pin for current limit set point adjustment (reduced by an external resistor to ground) and for output voltage monitoring, where a voltage exceeding VOVP shuts the IC down after strobed, digitally filtered sampling."
},
{
"number": "7",
"name": "FB",
"type": "input",
"description": "Control input for duty cycle control; a voltage below VFBbm activates burst-mode operation and a level close to VFBlin approaches the cycle-by-cycle overcurrent set point."
},
{
"number": "8",
"name": "BR",
"type": "input",
"description": "Brownout protection input with hysteresis; a voltage below VBRth shuts down (not latches) the device, and it can be connected to ground when not used."
},
{
"number": "9",
"name": "N.C.",
"type": "unconnected",
"description": "Not connected."
},
{
"number": "10",
"name": "N.C.",
"type": "unconnected",
"description": "Not connected."
},
{
"number": "11",
"name": "N.C.",
"type": "unconnected",
"description": "Not connected."
},
{
"number": "12",
"name": "N.C.",
"type": "unconnected",
"description": "Not connected."
},
{
"number": "13",
"name": "DRAIN",
"type": "passive",
"description": "High voltage drain pin that also draws the built-in high voltage switched start-up bias current."
},
{
"number": "14",
"name": "DRAIN",
"type": "passive",
"description": "High voltage drain pin that also draws the built-in high voltage switched start-up bias current."
},
{
"number": "15",
"name": "DRAIN",
"type": "passive",
"description": "High voltage drain pin that also draws the built-in high voltage switched start-up bias current."
},
{
"number": "16",
"name": "DRAIN",
"type": "passive",
"description": "High voltage drain pin that also draws the built-in high voltage switched start-up bias current."
}
],
"provenance": {
"extractor": "extract_pins 0.3",
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"primary_model": "claude-haiku-5-5",
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"consensus": "agreed",
"guards": "pin_guards 0.1: passed",
"guard_notes": [
"extractor flagged: VIPER37LDTR is the tape-and-reel order code for the SO16 narrow package (Table 1), so the SO16N pino",
"1/16 pins cited to the wrong page (name found elsewhere): ['11:N.C.@p5']"
],
"pages_sent": 18,
"cost_usd": 0.0204,
"at": "2026-11-05T23:19:19"
},
"datasheet": {
"url": "https://www.st.com/resource/en/datasheet/viper37ldtr.pdf",
"pages": 35,
"sha256": "18de52b1b5992ba6",
"source_tier": "mfr"
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"cad": "KiCad official (CC-BY-SA 4.0)",
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"described": 16,
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},
{
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"metadata": {
"specs": {
"Manufacturer": "STMicroelectronics",
"Package": "SOIC-16",
"Category": "Power Management (PMIC)",
"Pins": "16"
},
"appearance": {
"contacts": {
"quote": "Note: The copper area for heat dissipation must be designed under the DRAIN pins.",
"page": 5,
"doc": "ds.pdf",
"material": "copper"
},
"version": 1,
"datasheet_sha256": "18de52b1b5992ba694965481f156dd89eae264953d9a3371f74bbf7c974ba816"
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"characteristics": {
"version": 1,
"source": "datasheet",
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"rows": [
{
"name": "Drain-to-source (ground) voltage",
"symbol": "VDRAIN",
"kind": "absolute_maximum",
"unit": "V",
"min": null,
"typ": null,
"max": 800,
"conditions": "",
"source_page": 6,
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{
"name": "Repetitive avalanche energy",
"symbol": "EAV",
"kind": "absolute_maximum",
"unit": "mJ",
"min": null,
"typ": null,
"max": 5,
"conditions": "limited by TJ = 150 °C",
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{
"name": "Repetitive avalanche current",
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{
"name": "Pulse drain current",
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"source": "datasheet"
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{
"name": "Control input pin voltage",
"symbol": "VCONT",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
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{
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"kind": "absolute_maximum",
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"min": -0.3,
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{
"name": "Brownout input pin voltage",
"symbol": "VBR",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 5,
"conditions": "",
"source_page": 6,
"source": "datasheet"
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{
"name": "Supply voltage",
"symbol": "VDD",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": null,
"conditions": "IDD = 25 mA; max printed as Self limited",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Input current",
"symbol": "IDD",
"kind": "absolute_maximum",
"unit": "mA",
"min": null,
"typ": null,
"max": 25,
"conditions": "",
"source_page": 6,
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{
"name": "Power dissipation",
"symbol": "PTOT",
"kind": "absolute_maximum",
"unit": "W",
"min": null,
"typ": null,
"max": 1.5,
"conditions": "TA < 60 °C",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Operating junction temperature range",
"symbol": "TJ",
"kind": "absolute_maximum",
"unit": "°C",
"min": -40,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Storage temperature",
"symbol": "TSTG",
"kind": "absolute_maximum",
"unit": "°C",
"min": -55,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Thermal resistance junction pin (SO16N)",
"symbol": "RthJP",
"kind": "thermal",
"unit": "°C/W",
"min": null,
"typ": null,
"max": 35,
"conditions": "Dissipated power = 1 W",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Thermal resistance junction ambient (SO16N)",
"symbol": "RthJA",
"kind": "thermal",
"unit": "°C/W",
"min": null,
"typ": null,
"max": 110,
"conditions": "Dissipated power = 1 W",
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{
"name": "Thermal resistance junction ambient, FR4 100 mm2 Cu (SO16N)",
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"kind": "thermal",
"unit": "°C/W",
"min": null,
"typ": null,
"max": 80,
"conditions": "Dissipated power = 1 W; standard single side FR4 board with 100 mm2 Cu (35 µm)",
"source_page": 6,
"source": "datasheet"
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{
"name": "Breakdown voltage",
"symbol": "VBVDSS",
"kind": "electrical",
"unit": "V",
"min": 800,
"typ": null,
"max": null,
"conditions": "IDRAIN = 1 mA, VFB = GND, TJ = 25 °C",
"source_page": 7,
"source": "datasheet"
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{
"name": "OFF state drain current",
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"kind": "electrical",
"unit": "μA",
"min": null,
"typ": null,
"max": 60,
"conditions": "VDRAIN = max. rating, VFB = GND, TJ = 25 °C",
"source_page": 7,
"source": "datasheet"
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{
"name": "Drain-source on state resistance",
"symbol": "RDS(on)",
"kind": "electrical",
"unit": "Ω",
"min": null,
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"max": 4.5,
"conditions": "IDRAIN = 0.4 A, VFB = 3 V, VBR = GND, TJ = 25 °C",
"source_page": 7,
"source": "datasheet"
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{
"name": "Drain-source on state resistance",
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"min": null,
"typ": null,
"max": 9,
"conditions": "IDRAIN = 0.4 A, VFB = 3 V, VBR = GND, TJ = 125 °C",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Drain-source start voltage",
"symbol": "VDRAIN_START",
"kind": "electrical",
"unit": "V",
"min": 60,
"typ": 80,
"max": 100,
"conditions": "",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Startup charging current",
"symbol": "IDDch",
"kind": "electrical",
"unit": "mA",
"min": -2,
"typ": -3,
"max": -4,
"conditions": "VDRAIN = 120 V, VBR = GND, VFB = GND, VDD = 4 V",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Startup charging current after fault",
"symbol": "IDDch",
"kind": "electrical",
"unit": "mA",
"min": -0.4,
"typ": -0.6,
"max": -0.8,
"conditions": "VDRAIN = 120 V, VBR = GND, VFB = GND, VDD = 5 V after fault",
"source_page": 7,
"source": "datasheet"
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{
"name": "Operating voltage range",
"symbol": "VDD",
"kind": "electrical",
"unit": "V",
"min": 8.5,
"typ": null,
"max": 23.5,
"conditions": "After turn-on",
"source_page": 7,
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{
"name": "VDD clamp voltage",
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"min": null,
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"max": 23.5,
"conditions": "IDD = 20 mA",
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{
"name": "VDD startup threshold",
"symbol": "VDDon",
"kind": "electrical",
"unit": "V",
"min": 13,
"typ": 14,
"max": 15,
"conditions": "VDRAIN = 120 V, VBR = GND, VFB = GND",
"source_page": 7,
"source": "datasheet"
},
{
"name": "VDD undervoltage shutdown threshold",
"symbol": "VDDoff",
"kind": "electrical",
"unit": "V",
"min": 7.5,
"typ": 8,
"max": 8.5,
"conditions": "",
"source_page": 7,
"source": "datasheet"
},
{
"name": "VDD restart voltage threshold",
"symbol": "VDD(RESTART)",
"kind": "electrical",
"unit": "V",
"min": 4,
"typ": 4.5,
"max": 5,
"conditions": "",
"source_page": 7,
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},
{
"name": "Operating supply current, not switching",
"symbol": "IDD0",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": null,
"max": 0.9,
"conditions": "VFB = GND, FSW = 0 kHz, VBR = GND, VDD = 10 V",
"source_page": 8,
"source": "datasheet"
},
{
"name": "Operating supply current, switching",
"symbol": "IDD1",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": null,
"max": 2.5,
"conditions": "VDRAIN = 120 V, FSW = 60 kHz",
"source_page": 8,
"source": "datasheet"
},
{
"name": "Operating supply current, with protection tripping",
"symbol": "IDD_FAULT",
"kind": "electrical",
"unit": "μA",
"min": null,
"typ": null,
"max": 400,
"conditions": "VDD = 10 V",
"source_page": 8,
"source": "datasheet"
},
{
"name": "Operating supply current with VDD < VDD_OFF",
"symbol": "IDD_OFF",
"kind": "electrical",
"unit": "μA",
"min": null,
"typ": null,
"max": 270,
"conditions": "VDD = 7 V",
"source_page": 8,
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},
{
"name": "Overload shutdown threshold",
"symbol": "VFBolp",
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"min": 4.5,
"typ": 4.8,
"max": 5.2,
"conditions": "",
"source_page": 8,
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},
{
"name": "Linear dynamics upper limit",
"symbol": "VFBlin",
"kind": "electrical",
"unit": "V",
"min": 3.2,
"typ": 3.5,
"max": 3.7,
"conditions": "",
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"source": "datasheet"
},
{
"name": "Burst mode threshold",
"symbol": "VFBbm",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": null,
"max": 0.6,
"conditions": "Voltage falling",
"source_page": 8,
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{
"name": "Burst mode hysteresis",
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"kind": "electrical",
"unit": "mV",
"min": null,
"typ": null,
"max": 100,
"conditions": "Voltage rising",
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"source": "datasheet"
},
{
"name": "Feedback sourced current",
"symbol": "IFB",
"kind": "electrical",
"unit": "μA",
"min": -150,
"typ": -200,
"max": -280,
"conditions": "VFB = 0.3 V",
"source_page": 8,
"source": "datasheet"
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{
"name": "Feedback sourced current",
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"typ": null,
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"conditions": "3.3 V < VFB < 4.8 V",
"source_page": 8,
"source": "datasheet"
},
{
"name": "Dynamic resistance",
"symbol": "RFB(DYN)",
"kind": "electrical",
"unit": "kΩ",
"min": null,
"typ": 14,
"max": 21,
"conditions": "VFB < 3.3 V",
"source_page": 8,
"source": "datasheet"
},
{
"name": "ΔVFB / ΔID",
"symbol": "HFB",
"kind": "electrical",
"unit": "V/A",
"min": 0.5,
"typ": null,
"max": 2,
"conditions": "",
"source_page": 8,
"source": "datasheet"
},
{
"name": "Low level clamp voltage",
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"unit": "V",
"min": null,
"typ": null,
"max": 0.5,
"conditions": "ICONT = -100 µA",
"source_page": 8,
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},
{
"name": "High level clamp voltage",
"symbol": "VCONT_h",
"kind": "electrical",
"unit": "V",
"min": 5,
"typ": 5.5,
"max": 6,
"conditions": "ICONT = 1 mA",
"source_page": 8,
"source": "datasheet"
},
{
"name": "Max. drain current limitation",
"symbol": "IDlim",
"kind": "electrical",
"unit": "A",
"min": 0.95,
"typ": 1,
"max": 1.05,
"conditions": "VFB = 4 V, ICONT = -10 µA, TJ = 25 °C",
"source_page": 8,
"source": "datasheet"
},
{
"name": "Soft-start time",
"symbol": "tSS",
"kind": "timing",
"unit": "ms",
"min": null,
"typ": null,
"max": 8.5,
"conditions": "",
"source_page": 8,
"source": "datasheet"
},
{
"name": "Minimum turn-on time",
"symbol": "TON_MIN",
"kind": "timing",
"unit": "ns",
"min": 220,
"typ": 400,
"max": 480,
"conditions": "",
"source_page": 8,
"source": "datasheet"
},
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