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LP8861QPWPRQ1
Public Made by Adomby adom
Texas Instruments LED Drivers, HTSSOP-20-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+58@@ -0,0 +1,58 @@+# LP8861QPWPRQ1++**Texas Instruments** · LED Drivers · HTSSOP-20-EP++LP8861QPWPRQ1 from Texas Instruments, in a HTSSOP-20-EP. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | VIN | power_in | Input power supply (4.5 V to 45 V operating range) and positive input for optional current-sense resistor. |+| 2 | LDO | output | Internal LDO output (4.15-4.45 V typical) requiring 1 μF decoupling capacitor to ground. |+| 3 | FSET | input | Switching frequency setting pin with external resistor 24 kΩ to 219 kΩ connected to ground for 300 kHz to 2.2 MHz operation. |+| 4 | VDDIO/EN | power_in | Digital IO supply voltage (0 V to 5.25 V) and device enable control input. |+| 5 | FAULT | tri_state | Open-drain fault signal output (0.3-0.5 V low); may be left floating if unused. |+| 6 | SYNC | input | External synchronization input (300 kHz to 2.2 MHz) for boost/SEPIC clock; ground for disabled spread spectrum, VDDIO/EN for enabled. |+| 7 | PWM | input | PWM brightness control input (100 Hz to 20 kHz recommended frequency range) with 0.5 μs minimum ON/OFF time. |+| 8 | TSENSE | input | NTC thermistor bridge temperature sense input; leave floating if temperature-based LED dimming not used. |+| 9 | TSET | input | NTC thermistor bridge reference input; must be connected to ground if temperature derating feature not used. |+| 10 | ISET | input | LED output current setting pin with external resistor 24 kΩ to 129 kΩ connected to ground setting maximum 100 mA per channel. |+| 11 | GND | power_in | Ground reference for logic and signal return paths. |+| 12 | OUT4 | output | LED current sink output 4 (0-100 mA maximum, 0.4-0.7 V saturation at 100 mA); ground if not used. |+| 13 | OUT3 | output | LED current sink output 3 (0-100 mA maximum, 0.4-0.7 V saturation at 100 mA); ground if not used. |+| 14 | OUT2 | output | LED current sink output 2 (0-100 mA maximum, 0.4-0.7 V saturation at 100 mA); ground if not used. |+| 15 | OUT1 | output | LED current sink output 1 (0-100 mA maximum, 0.4-0.7 V saturation at 100 mA); ground if not used. |+| 16 | FB | input | Boost/SEPIC feedback voltage input connected to center tap of resistor divider (5 kΩ to 150 kΩ per resistor) between VOUT and ground. |+| 17 | PGND | power_in | Boost/SEPIC converter power ground return path. |+| 18 | SW | output | Boost/SEPIC internal switch node (0 V to 50 V absolute maximum) with 2 A current limit typical (2.5 A warm-start) and 240-400 mΩ RDSon. |+| 19 | SD | output | Power-line FET gate control output for external soft-start transistor (185-283 μA pulldown current); may be left floating if not used. |+| 20 | VSENSE_N | input | Input supply current-sense feedback pin; connect to VIN when optional input current-sense resistor not used. |+| 21 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | HTSSOP-20-EP |+| Category | Nixie Tube Driver/LED Driver |+| Pins | 21 |++## CAD (KiCad official)++- Symbol: `LP8861QPWPRQ1`+- Footprint: `Package_SO:TSSOP-20-1EP_4.4x6.5mm_P0.65mm_EP2.15x3.35mm`+- 3D model: HTSSOP-20-EP, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 1.2 mm nominal TSSOP height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)+- 3D model files: `lp8861qpwprq1-etched.step` / `lp8861qpwprq1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lp8861qpwprq1.step` / `lp8861qpwprq1.glb` are the bare package body.++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/lp8861-q1) (43 pp, sha256 `ad8ad167d60c5bfc`, retrieved 2026-10-01, tier: lcsc)+- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.+- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.2`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-sonnet-4-6` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/lp8861qpwprq1-datasheet.pdf)
page.jsonadded+234@@ -0,0 +1,234 @@+{+ "slug": "lp8861qpwprq1",+ "version": "0.1.0",+ "type": "component",+ "description": "Texas Instruments LED Drivers, HTSSOP-20-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "nixie tube driver-led driver",+ "lp8861qpwprq1",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "lp8861qpwprq1.kicad_sym",+ "lp8861qpwprq1.kicad_mod",+ "lp8861qpwprq1.glb",+ "lp8861qpwprq1.step",+ "lp8861qpwprq1.lbr",+ "docs/hero.png",+ "docs/lp8861qpwprq1-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html"+ ],+ "component": {+ "mpn": "LP8861QPWPRQ1",+ "manufacturer": "Texas Instruments",+ "package": "HTSSOP-20-EP",+ "pin_count": 21,+ "category": "Nixie Tube Driver/LED Driver",+ "subcategory": "LED Drivers",+ "datasheet": "https://www.ti.com/cn/lit/gpn/lp8861-q1",+ "parts": {+ "symbol": "lp8861qpwprq1.kicad_sym",+ "footprint": "lp8861qpwprq1.kicad_mod",+ "model_3d": "lp8861qpwprq1-etched.glb",+ "model_3d_plain": "lp8861qpwprq1.glb",+ "model_3d_step": "lp8861qpwprq1-etched.step",+ "model_3d_step_plain": "lp8861qpwprq1.step",+ "lbr": "lp8861qpwprq1.lbr"+ },+ "distributor_links": {+ "lcsc": "C485554",+ "digikey": "296-42558-2-ND",+ "mouser": "595-LP8861QPWPRQ1"+ },+ "distributor_check": {+ "checked_at": "2026-10-01T18:10:43Z",+ "source": "Component Ocean /api/assign-pns",+ "digikey": {+ "pn": "296-42558-2-ND",+ "status": "found",+ "lifecycle": "Active"+ },+ "mouser": {+ "pn": "595-LP8861QPWPRQ1",+ "status": "found"+ }+ },+ "pins": [+ {+ "number": "1",+ "name": "VIN",+ "type": "power_in",+ "description": "Input power supply (4.5 V to 45 V operating range) and positive input for optional current-sense resistor."+ },+ {+ "number": "2",+ "name": "LDO",+ "type": "output",+ "description": "Internal LDO output (4.15-4.45 V typical) requiring 1 μF decoupling capacitor to ground."+ },+ {+ "number": "3",+ "name": "FSET",+ "type": "input",+ "description": "Switching frequency setting pin with external resistor 24 kΩ to 219 kΩ connected to ground for 300 kHz to 2.2 MHz operation."+ },+ {+ "number": "4",+ "name": "VDDIO/EN",+ "type": "power_in",+ "description": "Digital IO supply voltage (0 V to 5.25 V) and device enable control input."+ },+ {+ "number": "5",+ "name": "FAULT",+ "type": "tri_state",+ "description": "Open-drain fault signal output (0.3-0.5 V low); may be left floating if unused."+ },+ {+ "number": "6",+ "name": "SYNC",+ "type": "input",+ "description": "External synchronization input (300 kHz to 2.2 MHz) for boost/SEPIC clock; ground for disabled spread spectrum, VDDIO/EN for enabled."+ },+ {+ "number": "7",+ "name": "PWM",+ "type": "input",+ "description": "PWM brightness control input (100 Hz to 20 kHz recommended frequency range) with 0.5 μs minimum ON/OFF time."+ },+ {+ "number": "8",+ "name": "TSENSE",+ "type": "input",+ "description": "NTC thermistor bridge temperature sense input; leave floating if temperature-based LED dimming not used."+ },+ {+ "number": "9",+ "name": "TSET",+ "type": "input",+ "description": "NTC thermistor bridge reference input; must be connected to ground if temperature derating feature not used."+ },+ {+ "number": "10",+ "name": "ISET",+ "type": "input",+ "description": "LED output current setting pin with external resistor 24 kΩ to 129 kΩ connected to ground setting maximum 100 mA per channel."+ },+ {+ "number": "11",+ "name": "GND",+ "type": "power_in",+ "description": "Ground reference for logic and signal return paths."+ },+ {+ "number": "12",+ "name": "OUT4",+ "type": "output",+ "description": "LED current sink output 4 (0-100 mA maximum, 0.4-0.7 V saturation at 100 mA); ground if not used."+ },+ {+ "number": "13",+ "name": "OUT3",+ "type": "output",+ "description": "LED current sink output 3 (0-100 mA maximum, 0.4-0.7 V saturation at 100 mA); ground if not used."+ },+ {+ "number": "14",+ "name": "OUT2",+ "type": "output",+ "description": "LED current sink output 2 (0-100 mA maximum, 0.4-0.7 V saturation at 100 mA); ground if not used."+ },+ {+ "number": "15",+ "name": "OUT1",+ "type": "output",+ "description": "LED current sink output 1 (0-100 mA maximum, 0.4-0.7 V saturation at 100 mA); ground if not used."+ },+ {+ "number": "16",+ "name": "FB",+ "type": "input",+ "description": "Boost/SEPIC feedback voltage input connected to center tap of resistor divider (5 kΩ to 150 kΩ per resistor) between VOUT and ground."+ },+ {+ "number": "17",+ "name": "PGND",+ "type": "power_in",+ "description": "Boost/SEPIC converter power ground return path."+ },+ {+ "number": "18",+ "name": "SW",+ "type": "output",+ "description": "Boost/SEPIC internal switch node (0 V to 50 V absolute maximum) with 2 A current limit typical (2.5 A warm-start) and 240-400 mΩ RDSon."+ },+ {+ "number": "19",+ "name": "SD",+ "type": "output",+ "description": "Power-line FET gate control output for external soft-start transistor (185-283 μA pulldown current); may be left floating if not used."+ },+ {+ "number": "20",+ "name": "VSENSE_N",+ "type": "input",+ "description": "Input supply current-sense feedback pin; connect to VIN when optional input current-sense resistor not used."+ },+ {+ "number": "21",+ "name": "EP",+ "type": "passive",+ "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."+ }+ ],+ "provenance": {+ "extractor": "extract_pins 0.2",+ "factory_chain": {+ "factory": "2.0.0",+ "extractor": "extract_pins 0.2",+ "primary_model": "claude-haiku-4-5-20251001",+ "primary_mode": "text",+ "consensus_model": "claude-sonnet-4-6",+ "consensus": "agreed",+ "guards": "pin_guards 0.1: passed",+ "guard_notes": [],+ "pages_sent": 43,+ "cost_usd": 0.4551,+ "at": "2026-10-01T18:10:18"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/lp8861-q1",+ "pages": 43,+ "sha256": "ad8ad167d60c5bfc",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 21,+ "described": 21,+ "cites_pages": true,+ "refuses_to_fabricate": true+ }+ },+ "viewers": {+ "symbol": "viewers/symbol.html",+ "footprint": "viewers/footprint.html"+ }+ },+ "visibility": "public",+ "org": "adom",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }+}