component
LM34936QPWPRQ1
Public Made by Adomby adom
Texas Instruments DC-DC Converters, TSSOP-28-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
Ray
lm34936qpwprq1: specified limits as data (metadata.characteristics, 51 rows from the datasheet)
78492b4
16d ago
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{
"schema_version": 1,
"type": "component",
"slug": "lm34936qpwprq1",
"title": "LM34936QPWPRQ1",
"brief": "Texas Instruments DC-DC Converters, TSSOP-28-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"version": "0.1.0",
"license": "CC-BY-SA-4.0",
"tags": [
"component",
"power management (pmic)",
"lm34936qpwprq1",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "LM34936QPWPRQ1",
"manufacturer": "Texas Instruments",
"package": "TSSOP-28-EP",
"pin_count": 29,
"category": "Power Management (PMIC)",
"subcategory": "DC-DC Converters",
"datasheet": "https://www.ti.com/cn/lit/gpn/lm34936-q1",
"parts": {
"symbol": "lm34936qpwprq1.kicad_sym",
"footprint": "lm34936qpwprq1.kicad_mod",
"model_3d": "lm34936qpwprq1-hero.glb",
"model_3d_plain": "lm34936qpwprq1.glb",
"model_3d_step": "lm34936qpwprq1-etched.step",
"model_3d_step_plain": "lm34936qpwprq1.step",
"lbr": "lm34936qpwprq1.lbr"
},
"distributor_links": {
"lcsc": "C2836673",
"digikey": "296-LM34936QPWPRQ1TR-ND",
"mouser": "595-LM34936QPWPRQ1"
},
"distributor_check": {
"checked_at": "2026-10-12T05:11:28Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "296-LM34936QPWPRQ1TR-ND",
"status": "found",
"lifecycle": "Active"
},
"mouser": {
"pn": "595-LM34936QPWPRQ1",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "EN/UVLO",
"type": "input",
"description": "Enable pin: below 0.4 V the device is in low current shutdown, above 1.22 V the PWM function is enabled provided VCC exceeds the VCC UV threshold."
},
{
"number": "2",
"name": "VIN",
"type": "power_in",
"description": "Input supply pin to the IC; connect to a supply voltage between 4.2 V and 30 V."
},
{
"number": "3",
"name": "VISNS",
"type": "input",
"description": "VIN sense input; connect to the power stage input rail."
},
{
"number": "4",
"name": "MODE",
"type": "input",
"description": "Selects hiccup mode: 1.38 V to 2.22 V is CCM with hiccup enabled (RMODE to AGND = 93.1 kΩ), 2.6 V to VCC is CCM with hiccup disabled (200 kΩ or connect to VCC)."
},
{
"number": "5",
"name": "DITH",
"type": "input",
"description": "A capacitor to AGND sets dithering that modulates the oscillator frequency by 10% of the nominal RT frequency; grounding the pin disables dithering, and it is ignored in external Sync mode."
},
{
"number": "6",
"name": "RT/SYNC",
"type": "input",
"description": "Switching frequency programming pin: a resistor to AGND sets the switching frequency, and the pin can also synchronize the PWM controller to an external clock."
},
{
"number": "7",
"name": "SLOPE",
"type": "passive",
"description": "A capacitor to AGND provides the slope compensation ramp for stable current mode operation in both Buck and Boost mode."
},
{
"number": "8",
"name": "SS",
"type": "passive",
"description": "Soft-start programming pin; a capacitor between SS and AGND sets the soft-start time."
},
{
"number": "9",
"name": "COMP",
"type": "output",
"description": "Output of the error amplifier; an external RC network between COMP and AGND compensates the feedback loop."
},
{
"number": "10",
"name": "AGND",
"type": "power_in",
"description": "Analog ground of the IC."
},
{
"number": "11",
"name": "FB",
"type": "input",
"description": "Feedback pin for output voltage regulation; connect a resistor divider from the converter output to FB."
},
{
"number": "12",
"name": "VOSNS",
"type": "input",
"description": "VOUT sense input; connect to the power stage output rail."
},
{
"number": "13",
"name": "ISNS(-)",
"type": "input",
"description": "Input or output current sense amplifier input; when the voltage across ISNS(+) and ISNS(-) reaches 50 mV a slow constant current loop regulates it to 50 mV, and shorting ISNS(+) and ISNS(-) disables the feature."
},
{
"number": "14",
"name": "ISNS(+)",
"type": "input",
"description": "Input or output current sense amplifier input; when the voltage across ISNS(+) and ISNS(-) reaches 50 mV a slow constant current loop regulates it to 50 mV, and shorting ISNS(+) and ISNS(-) disables the feature."
},
{
"number": "15",
"name": "CSG",
"type": "input",
"description": "Negative or ground input to the PWM current sense amplifier; connect directly to the low-side (ground) of the current sense resistor."
},
{
"number": "16",
"name": "CS",
"type": "input",
"description": "Positive input to the PWM current sense amplifier."
},
{
"number": "17",
"name": "PGOOD",
"type": "output",
"description": "Power-Good open-drain output that is pulled low when FB is outside a -9%/+10% regulation window around the 0.8-V VREF."
},
{
"number": "18",
"name": "SW2",
"type": "passive",
"description": "Boost side switching node."
},
{
"number": "19",
"name": "HDRV2",
"type": "output",
"description": "Output of the high-side gate driver; connect directly to the gate of the high-side MOSFET."
},
{
"number": "20",
"name": "BOOT2",
"type": "passive",
"description": "Bootstrap pin; an external capacitor is required between BOOT2 and SW2 to bias the high-side MOSFET gate driver."
},
{
"number": "21",
"name": "LDRV2",
"type": "output",
"description": "Output of the low-side gate driver; connect directly to the gate of the low-side MOSFET."
},
{
"number": "22",
"name": "PGND",
"type": "power_in",
"description": "Power ground of the IC; the high current ground connection to the low-side gate drivers."
},
{
"number": "23",
"name": "VCC",
"type": "power_out",
"description": "Output of the VCC bias regulator; connect a capacitor to ground."
},
{
"number": "24",
"name": "BIAS",
"type": "power_in",
"description": "Optional input to the VCC bias regulator; for VBIAS > 8 V the VCC regulator draws power from BIAS, which can reduce power loss at high VIN."
},
{
"number": "25",
"name": "LDRV1",
"type": "output",
"description": "Output of the low-side gate driver; connect directly to the gate of the low-side MOSFET."
},
{
"number": "26",
"name": "BOOT1",
"type": "passive",
"description": "Bootstrap pin; an external capacitor is required between BOOT1 and SW1 to bias the high-side MOSFET gate driver."
},
{
"number": "27",
"name": "HDRV1",
"type": "output",
"description": "Output of the high-side gate driver; connect directly to the gate of the high-side MOSFET."
},
{
"number": "28",
"name": "SW1",
"type": "passive",
"description": "Buck side switching node."
},
{
"number": "29",
"name": "PowerPAD",
"type": "power_in",
"description": "Exposed PowerPAD should be soldered to analog ground, with thermal vias to a PCB ground plane if possible for improved power dissipation."
}
],
"provenance": {
"extractor": "extract_pins 0.3",
"factory_chain": {
"factory": "2.0.0",
"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: The PowerPAD is the exposed thermal pad that should be soldered to analog ground. The datasheet does; The pin table combines the SW2/SW1, HDRV2/HDRV1, BOOT2/BOOT1 and LDRV2/LDRV1 rows and gives each pai; The pin-configuration figure labels this pin ISNS(±) while the pin table labels it ISNS(–). I used t",
"exposed pad 29 added from the footprint"
],
"pages_sent": 11,
"cost_usd": 0.0724,
"at": "2026-10-12T05:11:13"
},
"datasheet": {
"url": "https://www.ti.com/cn/lit/gpn/lm34936-q1",
"pages": 41,
"sha256": "4ca152db4a27eff3",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 29,
"described": 29,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"models_3d": [
{
"file": "lm34936qpwprq1.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
7.2,
9.7,
1.05
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "ff242f1d3be9d09e7f929707a2c5b1ee974a4f882053b04bcdb1cd2cb21223ef",
"checked": "2026-10-12",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "lm34936qpwprq1-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
7.2,
9.7,
1.05
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"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "1d532609337868b1812d55f5e9c3df7c869878fd6ab78de76f554113c2fe4f94",
"checked": "2026-10-12",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
},
"metadata": {
"specs": {
"Manufacturer": "Texas Instruments",
"Package": "TSSOP-28-EP",
"Category": "Power Management (PMIC)",
"Pins": "29"
},
"characteristics": {
"version": 1,
"source": "datasheet",
"datasheet_sha256": "4ca152db4a27eff3",
"rows": [
{
"name": "VIN shutdown current",
"symbol": "IQ",
"kind": "electrical",
"unit": "µA",
"min": null,
"typ": 2.6,
"max": 10,
"conditions": "VEN/UVLO = 0 V",
"source_page": 6,
"source": "datasheet"
},
{
"name": "VIN operating current",
"symbol": "",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": 2,
"max": 4,
"conditions": "VEN/UVLO = 2 V, VFB = 0.9 V",
"source_page": 6,
"source": "datasheet"
},
{
"name": "VCC regulation voltage",
"symbol": "VVCC(VIN)",
"kind": "electrical",
"unit": "V",
"min": 6.95,
"typ": 7.35,
"max": 7.88,
"conditions": "VBIAS = 0 V, VCC open",
"source_page": 6,
"source": "datasheet"
},
{
"name": "VCC undervoltage lockout",
"symbol": "VUV(VCC)",
"kind": "electrical",
"unit": "V",
"min": 3.11,
"typ": 3.27,
"max": 3.43,
"conditions": "VCC increasing",
"source_page": 6,
"source": "datasheet"
},
{
"name": "VCC regulator output impedance",
"symbol": "ROUT(VCC)",
"kind": "electrical",
"unit": "Ω",
"min": null,
"typ": 8,
"max": 16,
"conditions": "IVCC = 30 mA, VIN = 4 V",
"source_page": 6,
"source": "datasheet"
},
{
"name": "BIAS switchover voltage",
"symbol": "VBIAS(SW)",
"kind": "electrical",
"unit": "V",
"min": 7.25,
"typ": 8,
"max": 8.75,
"conditions": "VIN = 24 V",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Standby threshold",
"symbol": "VEN(STBY)",
"kind": "electrical",
"unit": "V",
"min": 0.55,
"typ": 0.82,
"max": 0.97,
"conditions": "EN/UVLO rising",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Standby source current",
"symbol": "IEN(STBY)",
"kind": "electrical",
"unit": "µA",
"min": 1,
"typ": 2,
"max": 3,
"conditions": "VEN/UVLO = 1.1 V",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Operating threshold",
"symbol": "VEN(OP)",
"kind": "electrical",
"unit": "V",
"min": 1.17,
"typ": 1.22,
"max": 1.29,
"conditions": "EN/UVLO rising",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Operating hysteresis current",
"symbol": "ΔIHYS(OP)",
"kind": "electrical",
"unit": "µA",
"min": 2.15,
"typ": 3.15,
"max": 4.25,
"conditions": "VEN/UVLO = 1.5 V",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Soft-start pullup current",
"symbol": "ISS",
"kind": "electrical",
"unit": "µA",
"min": 3.75,
"typ": 5,
"max": 6.35,
"conditions": "VSS = 0 V",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Feedback reference voltage",
"symbol": "VREF",
"kind": "electrical",
"unit": "V",
"min": 0.788,
"typ": 0.8,
"max": 0.812,
"conditions": "FB = COMP",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Switching frequency 1",
"symbol": "fSW(1)",
"kind": "electrical",
"unit": "kHz",
"min": 175,
"typ": 200,
"max": 225,
"conditions": "RT = 40 kΩ",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Switching frequency 2",
"symbol": "fSW(2)",
"kind": "electrical",
"unit": "kHz",
"min": 350,
"typ": 390,
"max": 430,
"conditions": "RT = 20 kΩ",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Buck current limit threshold (valley)",
"symbol": "VCS(BUCK)",
"kind": "electrical",
"unit": "mV",
"min": 66,
"typ": 80,
"max": 94,
"conditions": "VIN = VVISNS = 24 V, VVOSNS = 12 V, VSLOPE = 0 V",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Boost current limit threshold (peak)",
"symbol": "VCS(BOOST)",
"kind": "electrical",
"unit": "mV",
"min": 100,
"typ": 120,
"max": 140,
"conditions": "VIN = VVISNS = 12 V, VVOSNS = 18 V, VSLOPE = 0 V",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Average current loop regulation target",
"symbol": "VSNS",
"kind": "electrical",
"unit": "mV",
"min": 43,
"typ": 50,
"max": 57,
"conditions": "VISNS(-) = 24 V, sweep ISNS(+), VSS = 0.8 V",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Buck adaptive slope current",
"symbol": "ISLOPE",
"kind": "electrical",
"unit": "µA",
"min": 24,
"typ": 30,
"max": 35,
"conditions": "VIN = VVISNS = 24 V, VVOSNS = 12 V, VSLOPE = 0 V",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Boost adaptive slope current",
"symbol": "ISLOPE",
"kind": "electrical",
"unit": "µA",
"min": 13,
"typ": 17,
"max": 21,
"conditions": "VIN = VVISNS = 12 V, VVOSNS = 18 V, VSLOPE = 0 V",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Source current out of MODE pin",
"symbol": "IMODE",
"kind": "electrical",
"unit": "µA",
"min": 17,
"typ": 20,
"max": 23,
"conditions": "",
"source_page": 7,
"source": "datasheet"
},
{
"name": "CCM with hiccup threshold",
"symbol": "VCCM_HIC",
"kind": "electrical",
"unit": "V",
"min": 1.18,
"typ": 1.28,
"max": 1.38,
"conditions": "",
"source_page": 7,
"source": "datasheet"
},
{
"name": "CCM no hiccup threshold",
"symbol": "VCCM",
"kind": "electrical",
"unit": "V",
"min": 2.22,
"typ": 2.4,
"max": 2.6,
"conditions": "",
"source_page": 7,
"source": "datasheet"
},
{
"name": "PGOOD sink current",
"symbol": "ISINK(PGD)",
"kind": "electrical",
"unit": "mA",
"min": 2,
"typ": 4.2,
"max": 6.5,
"conditions": "VPGOOD = 0.4 V",
"source_page": 7,
"source": "datasheet"
},
{
"name": "VIN input bias voltage",
"symbol": "VIN",
"kind": "recommended_operating",
"unit": "V",
"min": 4.2,
"typ": null,
"max": 30,
"conditions": "",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Input power stage voltage with external bias",
"symbol": "VISNS",
"kind": "recommended_operating",
"unit": "V",
"min": 2.5,
"typ": null,
"max": 30,
"conditions": "BIAS ≥ 5 V or VIN ≥ 4.5 V",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Bias supply voltage range (when VCC in regulation)",
"symbol": "BIAS",
"kind": "recommended_operating",
"unit": "V",
"min": 8,
"typ": null,
"max": 30,
"conditions": "",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Output voltage range",
"symbol": "VOSNS",
"kind": "recommended_operating",
"unit": "V",
"min": 0.8,
"typ": null,
"max": 30,
"conditions": "",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Enable voltage range",
"symbol": "EN/UVLO",
"kind": "recommended_operating",
"unit": "V",
"min": 0,
"typ": null,
"max": 30,
"conditions": "",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Average current sense common mode range",
"symbol": "ISNS(+), ISNS(-)",
"kind": "recommended_operating",
"unit": "V",
"min": 0,
"typ": null,
"max": 30,
"conditions": "",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Operating temperature range (junction)",
"symbol": "TJ",
"kind": "recommended_operating",
"unit": "°C",
"min": -40,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Operating frequency range",
"symbol": "Fsw",
"kind": "recommended_operating",
"unit": "kHz",
"min": 100,
"typ": null,
"max": 600,
"conditions": "",
"source_page": 5,
"source": "datasheet"
},
{
"name": "VIN, EN/UVLO, VISNS, VOSNS, ISNS(+), ISNS(–)",
"symbol": "",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 42,
"conditions": "",
"source_page": 5,
"source": "datasheet"
},
{
"name": "BIAS",
"symbol": "",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 40,
"conditions": "",
"source_page": 5,
"source": "datasheet"
},
{
"name": "FB, SS, DITH, RT/SYNC, SLOPE, COMP",
"symbol": "",
"kind": "absolute_maximum",
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