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TPS3851H33EDRBT
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Texas Instruments Supervisor And Reset ICs, VSON-8-EP(3x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+46@@ -0,0 +1,46 @@+# TPS3851H33EDRBT++**Texas Instruments** · Supervisor And Reset ICs · VSON-8-EP(3x3)++TPS3851H33EDRBT from Texas Instruments, in a VSON-8-EP(3x3). 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 | VDD | power_in | Supply voltage input, 1.6V to 6.5V range; add 0.1µF bypass capacitor for noisy applications. |+| 2 | CWD | input | Programmable watchdog timeout input; configure via external capacitor to GND, 10kΩ pull-up to VDD, or left unconnected; charging current 375nA typical; threshold 1.196-1.224V. |+| 3 | MR | input | Manual reset input with internal 500-700nA pull-up; logic low pulse (minimum 1µs) triggers RESET output; internally pulled high when unused. |+| 4 | GND | power_in | Ground reference; internally connected to thermal pad; connect thermal pad to large ground plane. |+| 5 | SET1 | input | Logic input to enable/disable watchdog timer; low <0.25V disables watchdog, high >0.8V enables operation; settling time 150µs when transitioning from disabled to enabled. |+| 6 | WDI | input | Watchdog timer input responsive to falling edge; minimum pulse duration 50ns; logic low <0.3×VDD, logic high >0.8×VDD; must be driven to VDD or GND when watchdog disabled. |+| 7 | WDO | output | Open-drain watchdog output driven low upon timeout for tRST delay (170-230ms) only when RESET is high, high-impedance when RESET low; maximum output low 0.4V at 3mA sink current. |+| 8 | RESET | output | Open-drain reset output driven low when VDD falls below undervoltage threshold VITN, released high-impedance after tRST delay (170-230ms); maximum output low 0.4V at 3mA; requires 1-100kΩ pull-up resistor. |+| 9 | Thermal Pad | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | VSON-8-EP(3x3) |+| Category | Power Management (PMIC) |+| Pins | 9 |++## CAD (KiCad official)++- Symbol: `TPS3851H33EDRBT`+- Footprint: `Package_SON:VSON-8-1EP_3x3mm_P0.65mm_EP1.6x2.4mm`+- 3D model: VSON-8-EP(3x3), generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.9 mm nominal VQFN 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: `tps3851h33edrbt-etched.step` / `tps3851h33edrbt-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tps3851h33edrbt.step` / `tps3851h33edrbt.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/tps3851) (36 pp, sha256 `45ddb32c5436aeef`, retrieved 2026-10-07, 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 0.3`, 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/tps3851h33edrbt-datasheet.pdf)
page.jsonadded+207@@ -0,0 +1,207 @@+{+ "slug": "tps3851h33edrbt",+ "version": "0.1.0",+ "type": "component",+ "description": "Texas Instruments Supervisor And Reset ICs, VSON-8-EP(3x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "power management (pmic)",+ "tps3851h33edrbt",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "tps3851h33edrbt.kicad_sym",+ "tps3851h33edrbt.kicad_mod",+ "tps3851h33edrbt.glb",+ "tps3851h33edrbt.step",+ "tps3851h33edrbt.lbr",+ "docs/hero.png",+ "docs/tps3851h33edrbt-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html",+ "tps3851h33edrbt-hero.glb",+ "tps3851h33edrbt-hero.overlay.json"+ ],+ "component": {+ "mpn": "TPS3851H33EDRBT",+ "manufacturer": "Texas Instruments",+ "package": "VSON-8-EP(3x3)",+ "pin_count": 9,+ "category": "Power Management (PMIC)",+ "subcategory": "Supervisor And Reset ICs",+ "datasheet": "https://www.ti.com/cn/lit/gpn/tps3851",+ "parts": {+ "symbol": "tps3851h33edrbt.kicad_sym",+ "footprint": "tps3851h33edrbt.kicad_mod",+ "model_3d": "tps3851h33edrbt-hero.glb",+ "model_3d_plain": "tps3851h33edrbt.glb",+ "model_3d_step": "tps3851h33edrbt-etched.step",+ "model_3d_step_plain": "tps3851h33edrbt.step",+ "lbr": "tps3851h33edrbt.lbr"+ },+ "distributor_links": {+ "lcsc": "C2067134",+ "digikey": "296-48198-2-ND",+ "mouser": "595-TPS3851H33EDRBT"+ },+ "distributor_check": {+ "checked_at": "2026-10-07T01:23:41Z",+ "source": "Component Ocean /api/assign-pns",+ "digikey": {+ "pn": "296-48198-2-ND",+ "status": "found",+ "lifecycle": "Active"+ },+ "mouser": {+ "pn": "595-TPS3851H33EDRBT",+ "status": "found"+ }+ },+ "pins": [+ {+ "number": "1",+ "name": "VDD",+ "type": "power_in",+ "description": "Supply voltage input, 1.6V to 6.5V range; add 0.1µF bypass capacitor for noisy applications."+ },+ {+ "number": "2",+ "name": "CWD",+ "type": "input",+ "description": "Programmable watchdog timeout input; configure via external capacitor to GND, 10kΩ pull-up to VDD, or left unconnected; charging current 375nA typical; threshold 1.196-1.224V."+ },+ {+ "number": "3",+ "name": "MR",+ "type": "input",+ "description": "Manual reset input with internal 500-700nA pull-up; logic low pulse (minimum 1µs) triggers RESET output; internally pulled high when unused."+ },+ {+ "number": "4",+ "name": "GND",+ "type": "power_in",+ "description": "Ground reference; internally connected to thermal pad; connect thermal pad to large ground plane."+ },+ {+ "number": "5",+ "name": "SET1",+ "type": "input",+ "description": "Logic input to enable/disable watchdog timer; low <0.25V disables watchdog, high >0.8V enables operation; settling time 150µs when transitioning from disabled to enabled."+ },+ {+ "number": "6",+ "name": "WDI",+ "type": "input",+ "description": "Watchdog timer input responsive to falling edge; minimum pulse duration 50ns; logic low <0.3×VDD, logic high >0.8×VDD; must be driven to VDD or GND when watchdog disabled."+ },+ {+ "number": "7",+ "name": "WDO",+ "type": "output",+ "description": "Open-drain watchdog output driven low upon timeout for tRST delay (170-230ms) only when RESET is high, high-impedance when RESET low; maximum output low 0.4V at 3mA sink current."+ },+ {+ "number": "8",+ "name": "RESET",+ "type": "output",+ "description": "Open-drain reset output driven low when VDD falls below undervoltage threshold VITN, released high-impedance after tRST delay (170-230ms); maximum output low 0.4V at 3mA; requires 1-100kΩ pull-up resistor."+ },+ {+ "number": "9",+ "name": "Thermal Pad",+ "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": [+ "extractor flagged: RESET (pin 8) and WDO (pin 7) are open-drain outputs that require external pull-up resistors in the ",+ "exposed pad 9 added from the footprint"+ ],+ "pages_sent": 24,+ "cost_usd": 0.2056,+ "at": "2026-10-07T01:23:20"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/tps3851",+ "pages": 36,+ "sha256": "45ddb32c5436aeef",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 9,+ "described": 9,+ "cites_pages": true,+ "refuses_to_fabricate": true+ }+ },+ "viewers": {+ "symbol": "viewers/symbol.html",+ "footprint": "viewers/footprint.html"+ },+ "models_3d": [+ {+ "file": "tps3851h33edrbt.step",+ "role": "plain",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 3.02,+ 3,+ 0.9+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "c0714a27c65b78871397c50249f7f8042030a629b80b9800d4caa84028d2b7d0",+ "checked": "2026-10-07",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ },+ {+ "file": "tps3851h33edrbt-etched.step",+ "role": "eda",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 3.02,+ 3,+ 0.9+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "17996fc4b905dcb291aee996f4ab644000566a50acd693ccfe9b075d84363d85",+ "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]"+ }+}