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TPS2331ID
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Texas Instruments Supervisor And Reset ICs, SOIC-14. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+50@@ -0,0 +1,50 @@+# TPS2331ID++**Texas Instruments** · Supervisor And Reset ICs · SOIC-14++TPS2331ID from Texas Instruments, in a SOIC-14. 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 | GATE | output | Connects to the gate of the external high-side N-channel MOSFET; the charge pump sources about 15 μA and generates gate-to-source voltages of 9 V-12 V. |+| 2 | DGND | power_in | Digital ground. |+| 3 | TIMER | output | A capacitor on TIMER sets the circuit-breaker deglitch time; the latch sets at about 0.5 V, and a minimum 50-pF capacitor to ground is strongly recommended in high-power or high-temperature applications. |+| 4 | VREG | output | Output of the internal low-dropout regulator, less than 5.5 V, requiring a 0.1-μF ceramic capacitor to ground for stable operation and noise rejection. |+| 5 | VSENSE | input | Power-good sense input; PWRGD is pulled low when VSENSE falls below approximately 1.23 V. |+| 6 | AGND | power_in | Analog ground, to be connected to DGND as close as possible. |+| 7 | ISENSE | input | Current-sense input connected to the external MOSFET drain; an overcurrent condition exists when ISENSE is pulled below ISET, and VI(ISENSE) should never exceed VI(IN). |+| 8 | IN | power_in | Input voltage supply for the device and the external MOSFET drive, specified for 3 V to 13 V input; VI(IN) must not be exceeded by ISENSE or ISET. |+| 9 | AGND | power_in | Analog ground, to be connected to DGND as close as possible. |+| 10 | ISET | input | Sets the circuit-breaker threshold through an external resistor to IN with an internal 50-μA current source; VI(ISET) should never exceed VI(IN). |+| 11 | FAULT | output | Open-drain overcurrent fault flag that is pulled low when the TIMER reaches 0.5 V and the device latches off. |+| 12 | PWRGD | output | Open-drain power-good output, pulled low during an undervoltage on VSENSE (reference about 1.23 V) with a 20-μs deglitch filter. |+| 13 | ENABLE | input | Active-high enable on the TPS2331 (active-low on the TPS2330); holding it in the disabled state for more than 50 μs discharges the gate and output bulk capacitance. |+| 14 | DISCH | output | Connects to the source of the external N-channel MOSFET to discharge the load when the MOSFET is disabled, and serves as the reference for the internal gate-clamp circuitry. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | SOIC-14 |+| Category | Power Management (PMIC) |+| Pins | 14 |++## CAD (KiCad official)++- Symbol: `TPS2331ID`+- Footprint: `Package_SO:SOIC-14_3.9x8.7mm_P1.27mm`+- 3D model: SOIC-14 (KiCad packages3D, STEP)+- 3D model files: `tps2331id-etched.step` / `tps2331id-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tps2331id.step` / `tps2331id.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/lit/ds/symlink/tps2331.pdf) (29 pp, sha256 `d6a67c69fef8f4da`, retrieved 2026-10-08, tier: manufacturer)+- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (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/tps2331id-datasheet.pdf)
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the charge pump sources about 15 μA and generates gate-to-source voltages of 9 V-12 V."+ },+ {+ "number": "2",+ "name": "DGND",+ "type": "power_in",+ "description": "Digital ground."+ },+ {+ "number": "3",+ "name": "TIMER",+ "type": "output",+ "description": "A capacitor on TIMER sets the circuit-breaker deglitch time; the latch sets at about 0.5 V, and a minimum 50-pF capacitor to ground is strongly recommended in high-power or high-temperature applications."+ },+ {+ "number": "4",+ "name": "VREG",+ "type": "output",+ "description": "Output of the internal low-dropout regulator, less than 5.5 V, requiring a 0.1-μF ceramic capacitor to ground for stable operation and noise rejection."+ },+ {+ "number": "5",+ "name": "VSENSE",+ "type": "input",+ "description": "Power-good sense input; PWRGD is pulled low when VSENSE falls below approximately 1.23 V."+ },+ {+ "number": "6",+ "name": "AGND",+ "type": "power_in",+ "description": "Analog ground, to be connected to DGND as close as possible."+ },+ {+ "number": "7",+ "name": "ISENSE",+ "type": "input",+ "description": "Current-sense input connected to the external MOSFET drain; an overcurrent condition exists when ISENSE is pulled below ISET, and VI(ISENSE) should never exceed VI(IN)."+ },+ {+ "number": "8",+ "name": "IN",+ "type": "power_in",+ "description": "Input voltage supply for the device and the external MOSFET drive, specified for 3 V to 13 V input; VI(IN) must not be exceeded by ISENSE or ISET."+ },+ {+ "number": "9",+ "name": "AGND",+ "type": "power_in",+ "description": "Analog ground, to be connected to DGND as close as possible."+ },+ {+ "number": "10",+ "name": "ISET",+ "type": "input",+ "description": "Sets the circuit-breaker threshold through an external resistor to IN with an internal 50-μA current source; VI(ISET) should never exceed VI(IN)."+ },+ {+ "number": "11",+ "name": "FAULT",+ "type": "output",+ "description": "Open-drain overcurrent fault flag that is pulled low when the TIMER reaches 0.5 V and the device latches off."+ },+ {+ "number": "12",+ "name": "PWRGD",+ "type": "output",+ "description": "Open-drain power-good output, pulled low during an undervoltage on VSENSE (reference about 1.23 V) with a 20-μs deglitch filter."+ },+ {+ "number": "13",+ "name": "ENABLE",+ "type": "input",+ "description": "Active-high enable on the TPS2331 (active-low on the TPS2330); holding it in the disabled state for more than 50 μs discharges the gate and output bulk capacitance."+ },+ {+ "number": "14",+ "name": "DISCH",+ "type": "output",+ "description": "Connects to the source of the external N-channel MOSFET to discharge the load when the MOSFET is disabled, and serves as the reference for the internal gate-clamp circuitry."+ }+ ],+ "provenance": {+ "extractor": "extract_pins 0.3",+ "factory_chain": {+ "factory": "2.0.0",+ "extractor": "extract_pins 0.3",+ "primary_model": "claude-haiku-5-5",+ "primary_mode": "text",+ "consensus_model": "claude-sonnet-5-5",+ "consensus": "agreed",+ "guards": "pin_guards 0.1: passed",+ "guard_notes": [+ "extractor flagged: Pin numbers and names come from Table 2 (Terminal Functions) on page 2 and are consistent with the D; Pin type assignments were adjusted to KiCad ERC classes where the datasheet's I/O column differs: AG; The datasheet's terminal table lists the TPS2330 and TPS2331 with a shared pin name 'ENABLE/ENABLE' "+ ],+ "pages_sent": 8,+ "cost_usd": 0.052,+ "at": "2026-10-08T14:33:40"+ },+ "datasheet": {+ "url": "https://www.ti.com/lit/ds/symlink/tps2331.pdf",+ "pages": 29,+ "sha256": "d6a67c69fef8f4da",+ "source_tier": "mfr"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 14,+ "described": 14,+ "cites_pages": true,+ "refuses_to_fabricate": true+ }+ },+ "viewers": {+ "symbol": "viewers/symbol.html",+ "footprint": "viewers/footprint.html"+ },+ "models_3d": [+ {+ "file": "tps2331id.step",+ "role": "plain",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 6,+ 8.7,+ 1.75+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "3b9a775da256c8afcc28dcddfbc2eb3f266107fe61ce8446d96f2c52b6f44a70",+ "checked": "2026-10-08",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ },+ {+ "file": "tps2331id-etched.step",+ "role": "eda",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 6,+ 8.7,+ 1.75+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "4eb42e20a3e5cc87b5ddb030859d0ea3170b99e012e2c92a755dc9e88e43be1a",+ "checked": "2026-10-08",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ }+ ]+ },+ "visibility": "public",+ "org": "adom",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }+}