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TPS51125ARGET
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Texas Instruments DC-DC Converters, VQFN-24-EP(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+61@@ -0,0 +1,61 @@+# TPS51125ARGET++**Texas Instruments** · DC-DC Converters · VQFN-24-EP(4x4)++TPS51125ARGET from Texas Instruments, in a VQFN-24-EP(4x4). 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 | ENTRIP1 | bidirectional | Channel 1 enable/disable and overcurrent limit setting input; connect resistor to GND for RDS(on) sense threshold or short to GND to shut down channel. |+| 2 | VFB1 | input | Channel 1 feedback input for output voltage regulation via resistor divider. |+| 3 | VREF | power_out | 2-V reference voltage output; bypass with 220 nF to 1 μF capacitor to GND. |+| 4 | TONSEL | input | On-time frequency selection input; voltage level selects operating frequency between 200 kHz and 460 kHz. |+| 5 | VFB2 | input | Channel 2 feedback input for output voltage regulation via resistor divider. |+| 6 | ENTRIP2 | bidirectional | Channel 2 enable/disable and overcurrent limit setting input; connect resistor to GND for RDS(on) sense threshold or short to GND to shut down channel. |+| 7 | VO2 | bidirectional | Channel 2 SMPS output node; serves as voltage reference, discharge path, and 3.3-V return power input. |+| 8 | VREG3 | power_out | 3.3-V power supply output; bypass with 10 μF or larger ceramic capacitor to GND (minimum 1 μF acceptable at no load). |+| 9 | VBST2 | power_in | Boost voltage supply input for channel 2 high-side gate driver. |+| 10 | DRVH2 | output | Channel 2 high-side N-channel MOSFET driver output, referenced to LL2. |+| 11 | LL2 | input | Channel 2 switch node connection for high-side driver and current sense circuitry. |+| 12 | DRVL2 | output | Channel 2 low-side N-channel MOSFET driver output, GND-referenced. |+| 13 | EN0 | bidirectional | Master enable input; open for LDO enable with switcher ready, 620 kΩ to GND for LDO enable without switcher, or short to GND to disable all circuits. |+| 14 | SKIPSEL | input | Operating mode selection input; voltage level selects between PWM-only, auto skip, and out-of-audio modes. |+| 15 | GND | power_in | Ground reference. |+| 16 | VIN | power_in | Main power supply input for LDO and controller; operating range 5.5 V to 28 V. |+| 17 | VREG5 | power_out | 5-V power supply output; bypass with 10 μF or larger ceramic capacitor to GND. |+| 18 | VCLK | output | 270-kHz clock output for external charge pump gate driver. |+| 19 | DRVL1 | output | Channel 1 low-side N-channel MOSFET driver output, GND-referenced. |+| 20 | LL1 | input | Channel 1 switch node connection for high-side driver and current sense circuitry. |+| 21 | DRVH1 | output | Channel 1 high-side N-channel MOSFET driver output, referenced to LL1. |+| 22 | VBST1 | power_in | Boost voltage supply input for channel 1 high-side gate driver. |+| 23 | PGOOD | output | Power-good logic AND output indicating both channels within regulation window. |+| 24 | VO1 | bidirectional | Channel 1 SMPS output node; serves as voltage reference, discharge path, and 5-V return power input. |+| 25 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | VQFN-24-EP(4x4) |+| Category | Power Management (PMIC) |+| Pins | 25 |++## CAD (KiCad official)++- Symbol: `TPS51125ARGET`+- Footprint: `Package_DFN_QFN:QFN-24-1EP_4x4mm_P0.5mm_EP2.6x2.6mm`+- 3D model: VQFN-24-EP(4x4) (KiCad packages3D, STEP)+- 3D model files: `tps51125arget-etched.step` / `tps51125arget-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tps51125arget.step` / `tps51125arget.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/tps51125a) (40 pp, sha256 `5778180f95295476`, retrieved 2026-10-07, tier: lcsc)+- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, 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/tps51125arget-datasheet.pdf)
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connect resistor to GND for RDS(on) sense threshold or short to GND to shut down channel."+ },+ {+ "number": "2",+ "name": "VFB1",+ "type": "input",+ "description": "Channel 1 feedback input for output voltage regulation via resistor divider."+ },+ {+ "number": "3",+ "name": "VREF",+ "type": "power_out",+ "description": "2-V reference voltage output; bypass with 220 nF to 1 μF capacitor to GND."+ },+ {+ "number": "4",+ "name": "TONSEL",+ "type": "input",+ "description": "On-time frequency selection input; voltage level selects operating frequency between 200 kHz and 460 kHz."+ },+ {+ "number": "5",+ "name": "VFB2",+ "type": "input",+ "description": "Channel 2 feedback input for output voltage regulation via resistor divider."+ },+ {+ "number": "6",+ "name": "ENTRIP2",+ "type": "bidirectional",+ "description": "Channel 2 enable/disable and overcurrent limit setting input; connect resistor to GND for RDS(on) sense threshold or short to GND to shut down channel."+ },+ {+ "number": "7",+ "name": "VO2",+ "type": "bidirectional",+ "description": "Channel 2 SMPS output node; serves as voltage reference, discharge path, and 3.3-V return power input."+ },+ {+ "number": "8",+ "name": "VREG3",+ "type": "power_out",+ "description": "3.3-V power supply output; bypass with 10 μF or larger ceramic capacitor to GND (minimum 1 μF acceptable at no load)."+ },+ {+ "number": "9",+ "name": "VBST2",+ "type": "power_in",+ "description": "Boost voltage supply input for channel 2 high-side gate driver."+ },+ {+ "number": "10",+ "name": "DRVH2",+ "type": "output",+ "description": "Channel 2 high-side N-channel MOSFET driver output, referenced to LL2."+ },+ {+ "number": "11",+ "name": "LL2",+ "type": "input",+ "description": "Channel 2 switch node connection for high-side driver and current sense circuitry."+ },+ {+ "number": "12",+ "name": "DRVL2",+ "type": "output",+ "description": "Channel 2 low-side N-channel MOSFET driver output, GND-referenced."+ },+ {+ "number": "13",+ "name": "EN0",+ "type": "bidirectional",+ "description": "Master enable input; open for LDO enable with switcher ready, 620 kΩ to GND for LDO enable without switcher, or short to GND to disable all circuits."+ },+ {+ "number": "14",+ "name": "SKIPSEL",+ "type": "input",+ "description": "Operating mode selection input; voltage level selects between PWM-only, auto skip, and out-of-audio modes."+ },+ {+ "number": "15",+ "name": "GND",+ "type": "power_in",+ "description": "Ground reference."+ },+ {+ "number": "16",+ "name": "VIN",+ "type": "power_in",+ "description": "Main power supply input for LDO and controller; operating range 5.5 V to 28 V."+ },+ {+ "number": "17",+ "name": "VREG5",+ "type": "power_out",+ "description": "5-V power supply output; bypass with 10 μF or larger ceramic capacitor to GND."+ },+ {+ "number": "18",+ "name": "VCLK",+ "type": "output",+ "description": "270-kHz clock output for external charge pump gate driver."+ },+ {+ "number": "19",+ "name": "DRVL1",+ "type": "output",+ "description": "Channel 1 low-side N-channel MOSFET driver output, GND-referenced."+ },+ {+ "number": "20",+ "name": "LL1",+ "type": "input",+ "description": "Channel 1 switch node connection for high-side driver and current sense circuitry."+ },+ {+ "number": "21",+ "name": "DRVH1",+ "type": "output",+ "description": "Channel 1 high-side N-channel MOSFET driver output, referenced to LL1."+ },+ {+ "number": "22",+ "name": "VBST1",+ "type": "power_in",+ "description": "Boost voltage supply input for channel 1 high-side gate driver."+ },+ {+ "number": "23",+ "name": "PGOOD",+ "type": "output",+ "description": "Power-good logic AND output indicating both channels within regulation window."+ },+ {+ "number": "24",+ "name": "VO1",+ "type": "bidirectional",+ "description": "Channel 1 SMPS output node; serves as voltage reference, discharge path, and 5-V return power input."+ },+ {+ "number": "25",+ "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 25 added from the footprint"+ ],+ "pages_sent": 9,+ "cost_usd": 0.1248,+ "at": "2026-10-07T01:55:57"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/tps51125a",+ "pages": 40,+ "sha256": "5778180f95295476",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 25,+ "described": 25,+ "cites_pages": true,+ "refuses_to_fabricate": true+ }+ },+ "viewers": {+ "symbol": "viewers/symbol.html",+ "footprint": "viewers/footprint.html"+ },+ "models_3d": [+ {+ "file": "tps51125arget.step",+ "role": "plain",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 4,+ 4,+ 0.77+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "096fc110543e6d324c5120c2d38e3dca87a389da9b6fac234f1fe40856295ef4",+ "checked": "2026-10-07",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ },+ {+ "file": "tps51125arget-etched.step",+ "role": "eda",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 4,+ 4,+ 0.77+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "fd6779d5e0c7a81855b8be204eae2fac2220d1368cd7a44bf1c977846d24b612",+ "checked": "2026-10-07",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ }+ ]+ },+ "visibility": "public",+ "org": "adom",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }+}