component
UCD3138RHAT
Public Made by Adomby adom
Texas Instruments Supervisor And Reset ICs, VQFN-40-EP(6x6). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"schema_version": 1,
"type": "component",
"slug": "ucd3138rhat",
"title": "UCD3138RHAT",
"brief": "Texas Instruments Supervisor And Reset ICs, VQFN-40-EP(6x6). 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)",
"ucd3138rhat",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "UCD3138RHAT",
"manufacturer": "Texas Instruments",
"package": "VQFN-40-EP(6x6)",
"pin_count": 41,
"category": "Power Management (PMIC)",
"subcategory": "Supervisor And Reset ICs",
"datasheet": "https://www.ti.com/cn/lit/gpn/ucd3138",
"parts": {
"symbol": "ucd3138rhat.kicad_sym",
"footprint": "ucd3138rhat.kicad_mod",
"model_3d": "ucd3138rhat-hero.glb",
"model_3d_plain": "ucd3138rhat.glb",
"model_3d_step": "ucd3138rhat-etched.step",
"model_3d_step_plain": "ucd3138rhat.step",
"lbr": "ucd3138rhat.lbr"
},
"distributor_links": {
"lcsc": "C2869414",
"digikey": "296-34781-2-ND",
"mouser": "595-UCD3138RHAT"
},
"distributor_check": {
"checked_at": "2026-10-07T02:38:16Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "296-34781-2-ND",
"status": "found",
"lifecycle": "Active"
},
"mouser": {
"pn": "595-UCD3138RHAT",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "AGND",
"type": "power_in",
"description": "Analog ground reference for differential error ADC and analog circuitry"
},
{
"number": "2",
"name": "AD13",
"type": "input",
"description": "12-bit ADC channel 13 input; connected to comparator E for current-sharing DAC output selection"
},
{
"number": "3",
"name": "AD06",
"type": "input",
"description": "12-bit ADC channel 6 input; connected to comparator F for DAC output selection"
},
{
"number": "4",
"name": "AD04",
"type": "input",
"description": "12-bit ADC channel 4 input; connected to comparator D for DAC output selection"
},
{
"number": "5",
"name": "AD03",
"type": "input",
"description": "12-bit ADC channel 3 input; connected to comparators B and C for overvoltage/undervoltage protection"
},
{
"number": "6",
"name": "DGND",
"type": "power_in",
"description": "Digital ground reference for digital circuitry and logic"
},
{
"number": "7",
"name": "/RESET",
"type": "input",
"description": "Device reset input, active-low; device resets when this pin is pulled below threshold"
},
{
"number": "8",
"name": "ADC_EXT_TRIG",
"type": "input",
"description": "External ADC conversion trigger input; multiplexed with TCAP, SYNC, and PWM0 functions"
},
{
"number": "9",
"name": "PMBUS_CLK",
"type": "tri_state",
"description": "Open-drain PMBus/I2C clock line; can be configured as SCI_TX0 UART output"
},
{
"number": "10",
"name": "PMBUS_DATA",
"type": "tri_state",
"description": "Open-drain PMBus/I2C data line; can be configured as SCI_RX0 UART input"
},
{
"number": "11",
"name": "DPWM0A",
"type": "output",
"description": "Digital PWM output 0A with 250ps pulse-width resolution; supports up to 2MHz switching frequency"
},
{
"number": "12",
"name": "DPWM0B",
"type": "output",
"description": "Digital PWM output 0B with 250ps pulse-width resolution; supports up to 2MHz switching frequency"
},
{
"number": "13",
"name": "DPWM1A",
"type": "output",
"description": "Digital PWM output 1A with 250ps pulse-width resolution; supports up to 2MHz switching frequency"
},
{
"number": "14",
"name": "DPWM1B",
"type": "output",
"description": "Digital PWM output 1B with 250ps pulse-width resolution; supports up to 2MHz switching frequency"
},
{
"number": "15",
"name": "DPWM2A",
"type": "output",
"description": "Digital PWM output 2A with 250ps pulse-width resolution; supports up to 2MHz switching frequency"
},
{
"number": "16",
"name": "DPWM2B",
"type": "output",
"description": "Digital PWM output 2B with 250ps pulse-width resolution; supports up to 2MHz switching frequency"
},
{
"number": "17",
"name": "DPWM3A",
"type": "output",
"description": "Digital PWM output 3A with 250ps pulse-width resolution; supports up to 2MHz switching frequency"
},
{
"number": "18",
"name": "DPWM3B",
"type": "output",
"description": "Digital PWM output 3B with 250ps pulse-width resolution; supports up to 2MHz switching frequency"
},
{
"number": "19",
"name": "PMBUS_ALERT",
"type": "tri_state",
"description": "Open-drain PMBus alert signal output; configurable as general-purpose GPIO"
},
{
"number": "20",
"name": "PMBUS_CTRL",
"type": "tri_state",
"description": "Open-drain PMBus control signal line; configurable as general-purpose GPIO"
},
{
"number": "21",
"name": "TCK",
"type": "input",
"description": "JTAG test clock input for debugging or manufacturer test; multiplexed with TCAP, SYNC, and PWM0"
},
{
"number": "22",
"name": "TDO",
"type": "output",
"description": "JTAG test data output for debugging; can be configured as SCI_TX0, PMBUS_ALERT, or FAULT0"
},
{
"number": "23",
"name": "TDI",
"type": "input",
"description": "JTAG test data input for debugging; can be configured as SCI_RX0, PMBUS_CTRL, or FAULT1"
},
{
"number": "24",
"name": "TMS",
"type": "input",
"description": "JTAG test mode select input for debugging or manufacturer test; configurable as GPIO"
},
{
"number": "25",
"name": "FAULT2",
"type": "input",
"description": "External fault input 2; detects external fault conditions for protection"
},
{
"number": "26",
"name": "DGND",
"type": "power_in",
"description": "Digital ground reference for digital circuitry and logic"
},
{
"number": "27",
"name": "V33D",
"type": "power_in",
"description": "Digital 3.3V core supply input; nominal 3.3V with recommended 4.7µF and 10nF bypass capacitors"
},
{
"number": "28",
"name": "BP18",
"type": "power_in",
"description": "1.8V bypass pin for internal regulator; requires 1µF and 10nF bypass capacitors to ground"
},
{
"number": "29",
"name": "AGND",
"type": "power_in",
"description": "Substrate analog ground reference; connected to internal silicon substrate"
},
{
"number": "30",
"name": "AGND",
"type": "power_in",
"description": "Analog ground reference for differential error ADC and analog circuitry"
},
{
"number": "31",
"name": "EAP0",
"type": "input",
"description": "Error ADC channel 0 positive input; positive terminal of differential feedback measurement for loop 0"
},
{
"number": "32",
"name": "EAN0",
"type": "input",
"description": "Error ADC channel 0 negative input; negative terminal of differential feedback measurement for loop 0"
},
{
"number": "33",
"name": "EAP1",
"type": "input",
"description": "Error ADC channel 1 positive input; positive terminal of differential feedback measurement for loop 1"
},
{
"number": "34",
"name": "EAN1",
"type": "input",
"description": "Error ADC channel 1 negative input; negative terminal of differential feedback measurement for loop 1"
},
{
"number": "35",
"name": "EAP2",
"type": "input",
"description": "Error ADC channel 2 positive input; recommended for peak current mode control applications; positive terminal of differential measurement for loop 2"
},
{
"number": "36",
"name": "AGND",
"type": "power_in",
"description": "Analog ground reference for differential error ADC and analog circuitry"
},
{
"number": "37",
"name": "V33A",
"type": "power_in",
"description": "Analog 3.3V supply input; powers analog circuitry with internal regulator; requires 4.7µF and 10nF bypass capacitors"
},
{
"number": "38",
"name": "AD00",
"type": "input",
"description": "12-bit ADC channel 0 input; connected to internal current source for PMBus address detection"
},
{
"number": "39",
"name": "AD01",
"type": "input",
"description": "12-bit ADC channel 1 input; connected to internal current source for PMBus address detection"
},
{
"number": "40",
"name": "AD02",
"type": "input",
"description": "12-bit ADC channel 2 input; connected to comparator A for current-sharing bus monitoring"
},
{
"number": "41",
"name": "EP",
"type": "passive",
"description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
}
],
"provenance": {
"extractor": "extract_pins 0.3",
"factory_chain": {
"factory": "2.0.0",
"extractor": "extract_pins 0.3",
"primary_model": "claude-haiku-4-5-20251001",
"primary_mode": "text",
"consensus_model": "claude-sonnet-5-5",
"consensus": "agreed",
"guards": "pin_guards 0.1: passed",
"guard_notes": [
"exposed pad 41 added from the footprint"
],
"pages_sent": 34,
"cost_usd": 0.2637,
"at": "2026-10-07T02:37:51"
},
"datasheet": {
"url": "https://www.ti.com/cn/lit/gpn/ucd3138",
"pages": 102,
"sha256": "5ebcb7f0fa3d9854",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 41,
"described": 41,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
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"footprint": "viewers/footprint.html"
},
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"role": "plain",
"up": "Z",
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"seat": "z = 0",
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"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "e5b4286c2329085d9ef7f90d5eb5bf41a435241ecc1baaf1383823b6d6a946ae",
"checked": "2026-10-07",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "ucd3138rhat-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
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"footprint_binding": "identity",
"sha256": "42e68a76b14d374967ef488ebb34c07ceb10fd95dffb5f5927ba38c94d7008b3",
"checked": "2026-10-07",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
},
"metadata": {
"specs": {
"Manufacturer": "Texas Instruments",
"Package": "VQFN-40-EP(6x6)",
"Category": "Power Management (PMIC)",
"Pins": "41"
}
},
"variants": [],
"sections": [
"hero",
"viewers",
"readme",
"breadcrumbs",
"info"
],
"discovery_triggers": [
"ucd3138rhat"
],
"discovery_pitch": "UCD3138RHAT (Texas Instruments) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
"author": {
"name": "Ray",
"email": "[email protected]"
},
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