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LM51561QDSSRQ1
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Texas Instruments DC-DC Converters, WSON-12-EP(2x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+50@@ -0,0 +1,50 @@+# LM51561QDSSRQ1++**Texas Instruments** · DC-DC Converters · WSON-12-EP(2x3)++LM51561QDSSRQ1 from Texas Instruments, in a WSON-12-EP(2x3). 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 | BIAS | power_in | Supply voltage input to internal VCC regulator; supports 2.97V to 60V operating range with 65V absolute maximum for automotive load dump transients. |+| 2 | VCC | power_in | Regulated output voltage from internal VCC regulator and supply input for MOSFET gate driver; 6.85V typical with absolute maximum 18V or VBIAS+0.3V. |+| 3 | GATE | output | N-channel MOSFET gate drive output capable of sourcing and sinking 1.5A peak current with output swing from 0.15V low state to VCC minus 0.25V high state. |+| 4 | GND | power_in | Ground return pin; connect directly to sense resistor ground through low-inductance wide and short path and to ground copper plane. |+| 5 | CS | input | Low-side current sense input; 100mV±7% peak current limit threshold with 0.3V DC and -1V for 50ns transient absolute maximum ratings. |+| 6 | COMP | output | Transconductance error amplifier output with 10MΩ output impedance and internal voltage clamps at 2.5-2.8V rising and 1-1.1V falling. |+| 7 | DITHOFF | input | Spread spectrum dithering selection input; internal dithering enabled when voltage is less than 1.0V or connected to GND, disabled when greater than 2.0V or connected to VCC. |+| 8 | FB | input | Inverting input of internal error amplifier; 1V±1% internal reference with 4.0V absolute maximum rating. |+| 9 | SS | input | Soft-start capacitor programming pin; charged by 10µA internal current source to ramp error amplifier reference during power-on soft start sequence. |+| 10 | RT | input | Switching frequency programming pin; regulated to 0.5V by internal regulator with programmable frequency range from 100kHz to 2.2MHz. |+| 11 | PGOOD | output | Power-good indicator open-drain output; pulls low when FB falls below undervoltage threshold with 18V absolute maximum and 1mA maximum sink capability. |+| 12 | UVLO/SYNC/EN | input | Undervoltage lockout and external clock synchronization input; 1.5V typical rising threshold and 1.45V typical falling threshold with 50mV hysteresis. |+| 13 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | WSON-12-EP(2x3) |+| Category | Power Management (PMIC) |+| Pins | 13 |++## CAD (KiCad official)++- Symbol: `LM51561QDSSRQ1`+- Footprint: `Package_SON:WSON-12-1EP_3x2mm_P0.5mm_EP1x2.65`+- 3D model: WSON-12-EP(2x3), generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.75 mm nominal WSON 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: `lm51561qdssrq1-etched.step` / `lm51561qdssrq1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm51561qdssrq1.step` / `lm51561qdssrq1.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/lm5156-q1) (50 pp, sha256 `2f02152f7d3a5e51`, 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/lm51561qdssrq1-datasheet.pdf)
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supports 2.97V to 60V operating range with 65V absolute maximum for automotive load dump transients."+ },+ {+ "number": "2",+ "name": "VCC",+ "type": "power_in",+ "description": "Regulated output voltage from internal VCC regulator and supply input for MOSFET gate driver; 6.85V typical with absolute maximum 18V or VBIAS+0.3V."+ },+ {+ "number": "3",+ "name": "GATE",+ "type": "output",+ "description": "N-channel MOSFET gate drive output capable of sourcing and sinking 1.5A peak current with output swing from 0.15V low state to VCC minus 0.25V high state."+ },+ {+ "number": "4",+ "name": "GND",+ "type": "power_in",+ "description": "Ground return pin; connect directly to sense resistor ground through low-inductance wide and short path and to ground copper plane."+ },+ {+ "number": "5",+ "name": "CS",+ "type": "input",+ "description": "Low-side current sense input; 100mV±7% peak current limit threshold with 0.3V DC and -1V for 50ns transient absolute maximum ratings."+ },+ {+ "number": "6",+ "name": "COMP",+ "type": "output",+ "description": "Transconductance error amplifier output with 10MΩ output impedance and internal voltage clamps at 2.5-2.8V rising and 1-1.1V falling."+ },+ {+ "number": "7",+ "name": "DITHOFF",+ "type": "input",+ "description": "Spread spectrum dithering selection input; internal dithering enabled when voltage is less than 1.0V or connected to GND, disabled when greater than 2.0V or connected to VCC."+ },+ {+ "number": "8",+ "name": "FB",+ "type": "input",+ "description": "Inverting input of internal error amplifier; 1V±1% internal reference with 4.0V absolute maximum rating."+ },+ {+ "number": "9",+ "name": "SS",+ "type": "input",+ "description": "Soft-start capacitor programming pin; charged by 10µA internal current source to ramp error amplifier reference during power-on soft start sequence."+ },+ {+ "number": "10",+ "name": "RT",+ "type": "input",+ "description": "Switching frequency programming pin; regulated to 0.5V by internal regulator with programmable frequency range from 100kHz to 2.2MHz."+ },+ {+ "number": "11",+ "name": "PGOOD",+ "type": "output",+ "description": "Power-good indicator open-drain output; pulls low when FB falls below undervoltage threshold with 18V absolute maximum and 1mA maximum sink capability."+ },+ {+ "number": "12",+ "name": "UVLO/SYNC/EN",+ "type": "input",+ "description": "Undervoltage lockout and external clock synchronization input; 1.5V typical rising threshold and 1.45V typical falling threshold with 50mV hysteresis."+ },+ {+ "number": "13",+ "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": 50,+ "cost_usd": 0.3155,+ "at": "2026-10-01T17:55:04"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/lm5156-q1",+ "pages": 50,+ "sha256": "2f02152f7d3a5e51",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 13,+ "described": 13,+ "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]"+ }+}