component
LM5576QMHX
Public Made by Adomby adom
Texas Instruments Global Sourcing Parts, 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 @@+# LM5576QMHX++**Texas Instruments** · Global Sourcing Parts · HTSSOP-20-EP++LM5576QMHX 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 | VCC | power_out | Regulated 7V output from internal bias regulator with 25mA max current; tracks VIN when below 9V, regulated to 7V when VIN exceeds 9V. |+| 2 | SD | input | Shutdown/UVLO input with dual thresholds: below 0.7V enters low power mode, 0.7V to 1.225V is standby mode, above 1.225V enables normal operation; 5µA internal pull-up. |+| 3 | VIN | power_in | Input power supply voltage with rated operating range from 6V to 75V. |+| 4 | VIN | power_in | Input power supply voltage with rated operating range from 6V to 75V. |+| 5 | SYNC | bidirectional | Oscillator synchronization input/output allowing internal oscillator to sync with external clock or multiple device SYNC pins connected together. |+| 6 | COMP | output | Error amplifier output for external loop compensation network connection (typically type-II filter) to FB pin. |+| 7 | FB | input | Feedback input to error amplifier inverting input with 1.225V regulation threshold and 10nA input bias current. |+| 8 | RT | input | Oscillator frequency setting input; external resistor between this pin and AGND sets switching frequency from 50kHz to 500kHz. |+| 9 | RAMP | output | Current ramp generator output; external capacitor (50pF to 2000pF) connected between this pin and AGND sets ramp slope for current-mode control. |+| 10 | AGND | power_in | Analog ground reference for internal control circuit bias functions and precision reference. |+| 11 | SS | output | Soft start output with 10µA internal charging current; external capacitor sets error amplifier reference rise time constant, pulled low during standby and thermal shutdown. |+| 12 | OUT | output | Output voltage node directly connected to regulated output voltage for feedback network. |+| 13 | PGND | power_in | Power ground reference for pre-switch driver and current sense resistor low-side reference. |+| 14 | PGND | power_in | Power ground reference for pre-switch driver and current sense resistor low-side reference. |+| 15 | IS | input | Current sense input measuring recirculation diode current through internal 42mΩ sense resistor; sample-hold at end of off-time provides 0.5V/A proportional DC level. |+| 16 | IS | input | Current sense input measuring recirculation diode current through internal 42mΩ sense resistor; sample-hold at end of off-time provides 0.5V/A proportional DC level. |+| 17 | SW | output | Switch node output from internal 75V/170mΩ N-channel buck MOSFET source terminal; must connect to Schottky diode and buck inductor. |+| 18 | SW | output | Switch node output from internal 75V/170mΩ N-channel buck MOSFET source terminal; must connect to Schottky diode and buck inductor. |+| 19 | PRE | output | Open-drain precharge assist output for bootstrap capacitor; internal MOSFET conducts 265ns per cycle to charge BST capacitor during light load or pre-charge applications. |+| 20 | BST | input | Bootstrap input for high-side gate driver; external 0.022µF ceramic capacitor required between BST and SW pins, charges from VCC during buck switch off-time. |+| 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 | Global Sourcing Parts |+| Pins | 21 |++## CAD (KiCad official)++- Symbol: `LM5576QMHX`+- 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: `lm5576qmhx-etched.step` / `lm5576qmhx-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm5576qmhx.step` / `lm5576qmhx.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/cn/lit/ds/symlink/lm5576-q1.pdf) (38 pp, sha256 `805d7577975dee6d`, 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-5-5` (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/lm5576qmhx-datasheet.pdf)
page.jsonadded+231@@ -0,0 +1,231 @@+{+ "slug": "lm5576qmhx",+ "version": "0.1.0",+ "type": "component",+ "description": "Texas Instruments Global Sourcing Parts, HTSSOP-20-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "global sourcing parts",+ "lm5576qmhx",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "lm5576qmhx.kicad_sym",+ "lm5576qmhx.kicad_mod",+ "lm5576qmhx.glb",+ "lm5576qmhx.step",+ "lm5576qmhx.lbr",+ "docs/hero.png",+ "docs/lm5576qmhx-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html"+ ],+ "component": {+ "mpn": "LM5576QMHX",+ "manufacturer": "Texas Instruments",+ "package": "HTSSOP-20-EP",+ "pin_count": 21,+ "category": "Global Sourcing Parts",+ "subcategory": "Global Sourcing Parts",+ "datasheet": "https://www.ti.com.cn/cn/lit/ds/symlink/lm5576-q1.pdf",+ "parts": {+ "symbol": "lm5576qmhx.kicad_sym",+ "footprint": "lm5576qmhx.kicad_mod",+ "model_3d": "lm5576qmhx-etched.glb",+ "model_3d_plain": "lm5576qmhx.glb",+ "model_3d_step": "lm5576qmhx-etched.step",+ "model_3d_step_plain": "lm5576qmhx.step",+ "lbr": "lm5576qmhx.lbr"+ },+ "distributor_links": {+ "lcsc": "C202189"+ },+ "distributor_check": {+ "checked_at": "2026-10-01T17:28:17Z",+ "source": "Component Ocean /api/assign-pns",+ "digikey": {+ "pn": null,+ "status": "no match"+ },+ "mouser": {+ "pn": null,+ "status": "no match"+ }+ },+ "pins": [+ {+ "number": "1",+ "name": "VCC",+ "type": "power_out",+ "description": "Regulated 7V output from internal bias regulator with 25mA max current; tracks VIN when below 9V, regulated to 7V when VIN exceeds 9V."+ },+ {+ "number": "2",+ "name": "SD",+ "type": "input",+ "description": "Shutdown/UVLO input with dual thresholds: below 0.7V enters low power mode, 0.7V to 1.225V is standby mode, above 1.225V enables normal operation; 5µA internal pull-up."+ },+ {+ "number": "3",+ "name": "VIN",+ "type": "power_in",+ "description": "Input power supply voltage with rated operating range from 6V to 75V."+ },+ {+ "number": "4",+ "name": "VIN",+ "type": "power_in",+ "description": "Input power supply voltage with rated operating range from 6V to 75V."+ },+ {+ "number": "5",+ "name": "SYNC",+ "type": "bidirectional",+ "description": "Oscillator synchronization input/output allowing internal oscillator to sync with external clock or multiple device SYNC pins connected together."+ },+ {+ "number": "6",+ "name": "COMP",+ "type": "output",+ "description": "Error amplifier output for external loop compensation network connection (typically type-II filter) to FB pin."+ },+ {+ "number": "7",+ "name": "FB",+ "type": "input",+ "description": "Feedback input to error amplifier inverting input with 1.225V regulation threshold and 10nA input bias current."+ },+ {+ "number": "8",+ "name": "RT",+ "type": "input",+ "description": "Oscillator frequency setting input; external resistor between this pin and AGND sets switching frequency from 50kHz to 500kHz."+ },+ {+ "number": "9",+ "name": "RAMP",+ "type": "output",+ "description": "Current ramp generator output; external capacitor (50pF to 2000pF) connected between this pin and AGND sets ramp slope for current-mode control."+ },+ {+ "number": "10",+ "name": "AGND",+ "type": "power_in",+ "description": "Analog ground reference for internal control circuit bias functions and precision reference."+ },+ {+ "number": "11",+ "name": "SS",+ "type": "output",+ "description": "Soft start output with 10µA internal charging current; external capacitor sets error amplifier reference rise time constant, pulled low during standby and thermal shutdown."+ },+ {+ "number": "12",+ "name": "OUT",+ "type": "output",+ "description": "Output voltage node directly connected to regulated output voltage for feedback network."+ },+ {+ "number": "13",+ "name": "PGND",+ "type": "power_in",+ "description": "Power ground reference for pre-switch driver and current sense resistor low-side reference."+ },+ {+ "number": "14",+ "name": "PGND",+ "type": "power_in",+ "description": "Power ground reference for pre-switch driver and current sense resistor low-side reference."+ },+ {+ "number": "15",+ "name": "IS",+ "type": "input",+ "description": "Current sense input measuring recirculation diode current through internal 42mΩ sense resistor; sample-hold at end of off-time provides 0.5V/A proportional DC level."+ },+ {+ "number": "16",+ "name": "IS",+ "type": "input",+ "description": "Current sense input measuring recirculation diode current through internal 42mΩ sense resistor; sample-hold at end of off-time provides 0.5V/A proportional DC level."+ },+ {+ "number": "17",+ "name": "SW",+ "type": "output",+ "description": "Switch node output from internal 75V/170mΩ N-channel buck MOSFET source terminal; must connect to Schottky diode and buck inductor."+ },+ {+ "number": "18",+ "name": "SW",+ "type": "output",+ "description": "Switch node output from internal 75V/170mΩ N-channel buck MOSFET source terminal; must connect to Schottky diode and buck inductor."+ },+ {+ "number": "19",+ "name": "PRE",+ "type": "output",+ "description": "Open-drain precharge assist output for bootstrap capacitor; internal MOSFET conducts 265ns per cycle to charge BST capacitor during light load or pre-charge applications."+ },+ {+ "number": "20",+ "name": "BST",+ "type": "input",+ "description": "Bootstrap input for high-side gate driver; external 0.022µF ceramic capacitor required between BST and SW pins, charges from VCC during buck switch off-time."+ },+ {+ "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-5-5",+ "consensus": "agreed",+ "guards": "pin_guards 0.1: passed",+ "guard_notes": [],+ "pages_sent": 38,+ "cost_usd": 0.2808,+ "at": "2026-10-01T17:27:56"+ },+ "datasheet": {+ "url": "https://www.ti.com.cn/cn/lit/ds/symlink/lm5576-q1.pdf",+ "pages": 38,+ "sha256": "805d7577975dee6d",+ "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]"+ }+}