component
ISL81601FRZ-T
Public Made by Adomby adom
RENESAS DC-DC Controllers, QFN-32(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"schema_version": 1,
"type": "component",
"slug": "isl81601frz-t",
"title": "ISL81601FRZ-T",
"brief": "RENESAS DC-DC Controllers, QFN-32(5x5). 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 supply chip",
"isl81601frz-t",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "ISL81601FRZ-T",
"manufacturer": "RENESAS",
"package": "QFN-32(5x5)",
"pin_count": 33,
"category": "Power Supply Chip",
"subcategory": "DC-DC Controllers",
"datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589835268057563136",
"parts": {
"symbol": "isl81601frz-t.kicad_sym",
"footprint": "isl81601frz-t.kicad_mod",
"model_3d": "isl81601frz-t-hero.glb",
"model_3d_plain": "isl81601frz-t-etched.glb",
"model_3d_step": "isl81601frz-t-etched.step",
"model_3d_step_plain": "isl81601frz-t.step",
"lbr": "isl81601frz-t.lbr"
},
"distributor_links": {
"lcsc": "C3189243",
"digikey": "20-ISL81601FRZ-TTR-ND",
"mouser": "968-ISL81601FRZ-T"
},
"distributor_check": {
"checked_at": "2026-10-25T10:37:01Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "20-ISL81601FRZ-TTR-ND",
"status": "found",
"lifecycle": "Active"
},
"mouser": {
"pn": "968-ISL81601FRZ-T",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "BSTEN",
"type": "bidirectional",
"description": "Burst mode enable: pulled up to 5V through an internal 250k resistor in PWM and DE mode, pulled low (rDS(ON) about 4.5k) in Burst mode; tie together in multi-chip parallel operation."
},
{
"number": "2",
"name": "FB_IN",
"type": "input",
"description": "Input voltage feedback for reverse-direction operation, regulated to 0.8V; keep below 0.3V to disable reverse operation, and tie to VCC5V or SGND when unused to set interleaving phase. Rated 0 to 5.25V."
},
{
"number": "3",
"name": "VCC5V",
"type": "power_out",
"description": "Output of the internal 5V linear regulator that biases the IC; must be decoupled to SGND with at least 4.7µF ceramic placed very close to the pin."
},
{
"number": "4",
"name": "NC",
"type": "unconnected",
"description": "No connection pin."
},
{
"number": "5",
"name": "RT/SYNC",
"type": "input",
"description": "Resistor to ground sets the default switching frequency from 100kHz to 600kHz per Equation 1; open or tied to VCC5V gives 120kHz, tied to GND gives 575kHz, and an external clock applied here synchronizes the internal oscillator."
},
{
"number": "6",
"name": "PLL_COMP",
"type": "passive",
"description": "PLL compensation pin requiring the RPLL/CPLL1/CPLL2 network, with 2.7kΩ, 10nF and 820pF recommended, to keep PLL stability across 100kHz to 600kHz."
},
{
"number": "7",
"name": "CLKOUT/DITHER",
"type": "bidirectional",
"description": "Clock output that synchronizes other ISL81601s when no capacitor is connected; a capacitor here disables clock out and enables ±15% frequency dithering before soft-start."
},
{
"number": "8",
"name": "SS/TRK",
"type": "passive",
"description": "Soft-start capacitor pin charged by a regulated 2µA current to set the output ramp, or a tracking input fed from a master rail through a resistor divider."
},
{
"number": "9",
"name": "COMP",
"type": "passive",
"description": "Voltage error GM amplifier output that sets the inner current-loop reference, with the compensation network connected between COMP and SGND; the PWM duty cycle falls to 0% when COMP is pulled below 1V."
},
{
"number": "10",
"name": "FB_OUT",
"type": "input",
"description": "Output voltage feedback input, connected to a resistive divider between VOUT and SGND, regulated to the internal 0.8V reference."
},
{
"number": "11",
"name": "IMON_OUT",
"type": "output",
"description": "Output current monitor whose voltage is proportional to average output current; reaching 1.2V activates the average current limit, and Burst mode is entered below 850mV and exited above 880mV."
},
{
"number": "12",
"name": "OV",
"type": "bidirectional",
"description": "OVP comparator output, pulled low through 250k in normal operation and pulled high when output OVP trips (threshold 112% to 116% of nominal); tie together in parallel operation."
},
{
"number": "13",
"name": "ISEN-",
"type": "input",
"description": "Output current sense negative input, with ISEN+ forming the differential sense across the output sense resistor."
},
{
"number": "14",
"name": "ISEN+",
"type": "input",
"description": "Output current sense positive input, with ISEN- forming the differential sense across the output sense resistor."
},
{
"number": "15",
"name": "PGOOD",
"type": "output",
"description": "Open-drain power-good output that is pulled low when VOUT is outside ±10% of nominal or when EN is pulled low."
},
{
"number": "16",
"name": "UG2",
"type": "output",
"description": "High-side MOSFET gate driver output for the boost converter, controlled by the boost PWM signal."
},
{
"number": "17",
"name": "PHASE2",
"type": "passive",
"description": "Boost converter phase node at the junction of the upper MOSFET source, filter inductor and lower MOSFET drain; rated -5V (<20ns) / -0.3V DC to +70V to GND."
},
{
"number": "18",
"name": "BOOT2",
"type": "passive",
"description": "Bootstrap pin for the boost high-side driver, connected to VDD through a bootstrap diode; the BOOT2-to-PHASE2 voltage is refreshed when it falls to 5.95V typical (5.4V to 6.65V)."
},
{
"number": "19",
"name": "LG2/OC_MODE",
"type": "output",
"description": "Boost low-side gate driver output controlled by the boost PWM signal, and an OCP mode set pin where a resistor to ground selects constant-current OCP below 0.3V or hiccup OCP above 0.3V (sourced 10µA at initiation)."
},
{
"number": "20",
"name": "VDD",
"type": "power_out",
"description": "Output of the internal 8V linear regulator supplied from VIN or EXTBIAS that biases the low-side drivers and bootstrap circuits; must be decoupled to PGND with at least 4.7µF ceramic placed very close to the pin, and is rated 0 to 8.3V."
},
{
"number": "21",
"name": "PGND",
"type": "power_in",
"description": "Power ground connected to the lower MOSFET sources and the negative terminals of the VDD decoupling capacitors."
},
{
"number": "22",
"name": "LG1/PWM_MODE",
"type": "output",
"description": "Buck low-side gate driver output controlled by the buck PWM signal, and a PWM mode set pin where a resistor to ground selects forced PWM below 0.3V or DE mode above 0.3V (sourced 10µA at initiation)."
},
{
"number": "23",
"name": "BOOT1",
"type": "passive",
"description": "Bootstrap pin for the buck high-side driver, connected to VDD through a bootstrap diode; the BOOT1-to-PHASE1 voltage is refreshed when it falls to 5.95V typical (5.4V to 6.65V)."
},
{
"number": "24",
"name": "PHASE1",
"type": "passive",
"description": "Buck converter phase node at the junction of the upper MOSFET source, filter inductor and lower MOSFET drain; rated -5V (<20ns) / -0.3V DC to +70V to GND."
},
{
"number": "25",
"name": "UG1",
"type": "output",
"description": "High-side MOSFET gate driver output for the buck converter, controlled by the buck PWM signal."
},
{
"number": "26",
"name": "EXTBIAS",
"type": "power_in",
"description": "External bias input for the optional VDD LDO, with an internal switch disconnecting the VIN LDO above 7.5V; rated 0 to 36V, decoupled with 10µF when used, and must not be left floating (tie to ground when unused)."
},
{
"number": "27",
"name": "VIN",
"type": "power_in",
"description": "Input rail, tied through a 5 to 10Ω resistor, that powers the internal VDD LDO and is rated 4.5V to 60V; decouple to ground with a 10nF to 1µF ceramic."
},
{
"number": "28",
"name": "CS+",
"type": "input",
"description": "Input current sense positive input, with CS- forming the differential input-current sense across the input sense resistor."
},
{
"number": "29",
"name": "CS-",
"type": "input",
"description": "Input current sense negative input, with CS+ forming the differential input-current sense across the input sense resistor."
},
{
"number": "30",
"name": "EN/UVLO",
"type": "input",
"description": "Enable and accurate UVLO pin that disables the output when grounded, activates the VDD and VCC5V LDOs at 1.3V and enables the PWM modulator at 1.8V; floating enables the part through an internal pull-up, and it is rated 0 to 5.25V."
},
{
"number": "31",
"name": "IMON_IN",
"type": "input",
"description": "Input current monitor whose voltage is proportional to average input current; reaching 1.2V activates the input current limit, and it is tied to VCC5V or SGND when unused to set interleaving phase."
},
{
"number": "32",
"name": "CLKEN",
"type": "bidirectional",
"description": "DE mode burst-off enable, pulled up to 5V through 250k in PWM, DE and burst-on states and pulled low in the burst-off state (rDS(ON) about 4.5k); tie together in multi-chip parallel operation."
},
{
"number": "33",
"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-5-5",
"primary_mode": "text",
"consensus_model": "claude-sonnet-5-5",
"consensus": "agreed",
"guards": "pin_guards 0.1: passed",
"guard_notes": [
"extractor flagged: The QFN has no separately numbered SGND pin. In the pin-description table SGND shares the row with t; Pin 4 is the only QFN pin marked NC in the pin-description table; the pin-assignment figure is ambig; The datasheet text provided covers 24 of 54 pages. The pin table is complete for the 32 Ld QFN, but ",
"exposed pad 33 added from the footprint",
"dropped thermal pad ['EP'] absent from footprint"
],
"pages_sent": 24,
"cost_usd": 0.171,
"at": "2026-10-25T10:36:41"
},
"datasheet": {
"url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589835268057563136",
"pages": 54,
"sha256": "b65ecd801c59f74f",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 33,
"described": 33,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"models_3d": [
{
"file": "isl81601frz-t.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
5,
5,
0.875
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"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "5fa713ea46b36980895812ed853577889b7cb06d275041a39b99bc0be305dc79",
"checked": "2026-10-25",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "isl81601frz-t-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
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0.875
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"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "c611a1497e2bb54ad34a1b02575a76fe607121501b2a23a5009b6e202158c35d",
"checked": "2026-10-25",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
},
"metadata": {
"specs": {
"Manufacturer": "RENESAS",
"Package": "QFN-32(5x5)",
"Category": "Power Supply Chip",
"Pins": "33"
},
"characteristics": {
"version": 1,
"source": "datasheet",
"datasheet_sha256": "b65ecd801c59f74fa0771c1393ec409cf2e5110269bcc9aa97dc80eac6d34e02",
"rows": [
{
"name": "VCC5V, EN/UVLO, FB_IN to GND",
"symbol": "",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 5.9,
"conditions": "",
"source_page": 13,
"source": "datasheet"
},
{
"name": "VDD to GND",
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"typ": null,
"max": 9,
"conditions": "",
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"source": "datasheet"
},
{
"name": "EXTBIAS to GND",
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"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 40,
"conditions": "",
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"source": "datasheet"
},
{
"name": "VIN, CS+, CS-, ISEN+, ISEN- to GND",
"symbol": "",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
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"max": 70,
"conditions": "",
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{
"name": "BOOT1, 2/UG1, 2 to PHASE1, 2 (max printed as VDD + 0.3)",
"symbol": "",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": null,
"conditions": "",
"source_page": 13,
"source": "datasheet"
},
{
"name": "PHASE1, 2 to GND (transient)",
"symbol": "",
"kind": "absolute_maximum",
"unit": "V",
"min": -5,
"typ": null,
"max": 70,
"conditions": "<20 ns",
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"source": "datasheet"
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{
"name": "PHASE1, 2 to GND (DC)",
"symbol": "",
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"min": -0.3,
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"max": 70,
"conditions": "DC",
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"source": "datasheet"
},
{
"name": "FB_OUT, SS/TRK, COMP, RT/SYNC, PLL_COMP, CLKOUT/DITHER, BSTEN, CLKEN, OV, PGOOD, IMON_IN, IMON_OUT to GND (max printed as VCC5V + 0.3)",
"symbol": "",
"kind": "absolute_maximum",
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"min": -0.3,
"typ": null,
"max": null,
"conditions": "",
"source_page": 13,
"source": "datasheet"
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{
"name": "LG1/PWM_MODE, LG2/OC_MODE to GND (max printed as VDD + 0.3)",
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"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": null,
"conditions": "",
"source_page": 13,
"source": "datasheet"
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{
"name": "CS+ to CS- and ISEN+ to ISEN-",
"symbol": "",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 0.3,
"conditions": "",
"source_page": 13,
"source": "datasheet"
},
{
"name": "VCC5V, VDD short-circuit to GND duration",
"symbol": "",
"kind": "absolute_maximum",
"unit": "s",
"min": null,
"typ": null,
"max": 1,
"conditions": "short-circuit to GND",
"source_page": 13,
"source": "datasheet"
},
{
"name": "ESD Human Body Model",
"symbol": "",
"kind": "absolute_maximum",
"unit": "kV",
"min": null,
"typ": null,
"max": 2,
"conditions": "Tested per JS-001-2017",
"source_page": 13,
"source": "datasheet"
},
{
"name": "ESD Machine Model",
"symbol": "",
"kind": "absolute_maximum",
"unit": "V",
"min": null,
"typ": null,
"max": 150,
"conditions": "Tested per JESD22-A115C",
"source_page": 13,
"source": "datasheet"
},
{
"name": "ESD Charge Device Model",
"symbol": "",
"kind": "absolute_maximum",
"unit": "kV",
"min": null,
"typ": null,
"max": 1.5,
"conditions": "Tested per JS-002-2014",
"source_page": 13,
"source": "datasheet"
},
{
"name": "Latch-Up",
"symbol": "",
"kind": "absolute_maximum",
"unit": "mA",
"min": null,
"typ": null,
"max": 100,
"conditions": "Tested per JESD78E; Class II, Level A, +125°C (TJ)",
"source_page": 13,
"source": "datasheet"
},
{
"name": "Junction Temperature",
"symbol": "TJ",
"kind": "absolute_maximum",
"unit": "°C",
"min": -55,
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{
"name": "Operating Temperature",
"symbol": "",
"kind": "absolute_maximum",
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{
"name": "Storage Temperature Range",
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"min": -65,
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{
"name": "Temperature",
"symbol": "",
"kind": "recommended_operating",
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"min": -40,
"typ": null,
"max": 125,
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"source_page": 14,
"source": "datasheet"
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{
"name": "VIN to GND",
"symbol": "VIN",
"kind": "recommended_operating",
"unit": "V",
"min": 4.5,
"typ": null,
"max": 60,
"conditions": "",
"source_page": 14,
"source": "datasheet"
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{
"name": "VCC5V, EN/UVLO, FB_IN to GND",
"symbol": "",
"kind": "recommended_operating",
"unit": "V",
"min": 0,
"typ": null,
"max": 5.25,
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"source": "datasheet"
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{
"name": "VDD to GND",
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"min": 0,
"typ": null,
"max": 8.3,
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"source": "datasheet"
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{
"name": "EXTBIAS to GND",
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"typ": null,
"max": 36,
"conditions": "",
"source_page": 14,
"source": "datasheet"
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{
"name": "Shutdown Current",
"symbol": "IVINQ",
"kind": "electrical",
"unit": "µA",
"min": null,
"typ": 2.7,
"max": 6,
"conditions": "EN = 0V, PGOOD is floating",
"source_page": 14,
"source": "datasheet"
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{
"name": "Operating Current",
"symbol": "IVINOP",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": 4.7,
"max": 6,
"conditions": "PGOOD is floating",
"source_page": 14,
"source": "datasheet"
},
{
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