component
TPS74401RGRR
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Texas Instruments Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, VQFN-20(3.5x3.5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+58@@ -0,0 +1,58 @@+# TPS74401RGRR++**Texas Instruments** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · VQFN-20(3.5x3.5)++TPS74401RGRR from Texas Instruments, in a VQFN-20(3.5x3.5). 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 | OUT | power_out | Regulated output voltage with output range 0.8V to 3.6V. |+| 2 | NC | unconnected | No connection; pin can be left floating or connected to GND for thermal contact. |+| 3 | NC | unconnected | No connection; pin can be left floating or connected to GND for thermal contact. |+| 4 | NC | unconnected | No connection; pin can be left floating or connected to GND for thermal contact. |+| 5 | IN | power_in | Unregulated input voltage (1.1V to 5.5V); input capacitor ≥1µF recommended. |+| 6 | IN | power_in | Unregulated input voltage (1.1V to 5.5V); input capacitor ≥1µF recommended. |+| 7 | IN | power_in | Unregulated input voltage (1.1V to 5.5V); input capacitor ≥1µF recommended. |+| 8 | IN | power_in | Unregulated input voltage (1.1V to 5.5V); input capacitor ≥1µF recommended. |+| 9 | PG | output | Open-drain power-good active-high output indicating VOUT status; requires 10kΩ to 1MΩ pullup resistor to supply up to 5.5V. |+| 10 | BIAS | power_in | Bias input voltage for error amplifier, reference, and internal control circuits; ≥1µF capacitor recommended (4.7µF if IN connected to BIAS). |+| 11 | EN | input | Enable input; driving high enables regulator, driving low puts device into shutdown mode. |+| 12 | GND | power_in | Ground return path and connection to ground plane for thermal performance. |+| 13 | NC | unconnected | No connection; pin can be left floating or connected to GND for thermal contact. |+| 14 | NC | unconnected | No connection; pin can be left floating or connected to GND for thermal contact. |+| 15 | SS | passive | Soft-start capacitor pin; capacitor connected to ground sets startup time (100µs typical if floating). |+| 16 | FB | input | Feedback input for external resistor divider network that sets the output voltage; must not be left floating. |+| 17 | NC | unconnected | No connection; pin can be left floating or connected to GND for thermal contact. |+| 18 | OUT | power_out | Regulated output voltage with output range 0.8V to 3.6V; output capacitor recommended for performance. |+| 19 | OUT | power_out | Regulated output voltage with output range 0.8V to 3.6V; output capacitor recommended for performance. |+| 20 | OUT | power_out | Regulated output voltage with output range 0.8V to 3.6V; output capacitor recommended for performance. |+| 21 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | VQFN-20(3.5x3.5) |+| Category | Power Management (PMIC) |+| Pins | 21 |++## CAD (KiCad official)++- Symbol: `TPS74401RGRR`+- Footprint: `Package_DFN_QFN:QFN-20-1EP_3.5x3.5mm_P0.5mm_EP2x2mm`+- 3D model: VQFN-20(3.5x3.5), generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.9 mm nominal QFN 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: `tps74401rgrr-etched.step` / `tps74401rgrr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tps74401rgrr.step` / `tps74401rgrr.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/tps74401) (50 pp, sha256 `1e27517f33e62170`, 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/tps74401rgrr-datasheet.pdf)
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pin can be left floating or connected to GND for thermal contact."+ },+ {+ "number": "3",+ "name": "NC",+ "type": "unconnected",+ "description": "No connection; pin can be left floating or connected to GND for thermal contact."+ },+ {+ "number": "4",+ "name": "NC",+ "type": "unconnected",+ "description": "No connection; pin can be left floating or connected to GND for thermal contact."+ },+ {+ "number": "5",+ "name": "IN",+ "type": "power_in",+ "description": "Unregulated input voltage (1.1V to 5.5V); input capacitor ≥1µF recommended."+ },+ {+ "number": "6",+ "name": "IN",+ "type": "power_in",+ "description": "Unregulated input voltage (1.1V to 5.5V); input capacitor ≥1µF recommended."+ },+ {+ "number": "7",+ "name": "IN",+ "type": "power_in",+ "description": "Unregulated input voltage (1.1V to 5.5V); input capacitor ≥1µF recommended."+ },+ {+ "number": "8",+ "name": "IN",+ "type": "power_in",+ "description": "Unregulated input voltage (1.1V to 5.5V); input capacitor ≥1µF recommended."+ },+ {+ "number": "9",+ "name": "PG",+ "type": "output",+ "description": "Open-drain power-good active-high output indicating VOUT status; requires 10kΩ to 1MΩ pullup resistor to supply up to 5.5V."+ },+ {+ "number": "10",+ "name": "BIAS",+ "type": "power_in",+ "description": "Bias input voltage for error amplifier, reference, and internal control circuits; ≥1µF capacitor recommended (4.7µF if IN connected to BIAS)."+ },+ {+ "number": "11",+ "name": "EN",+ "type": "input",+ "description": "Enable input; driving high enables regulator, driving low puts device into shutdown mode."+ },+ {+ "number": "12",+ "name": "GND",+ "type": "power_in",+ "description": "Ground return path and connection to ground plane for thermal performance."+ },+ {+ "number": "13",+ "name": "NC",+ "type": "unconnected",+ "description": "No connection; pin can be left floating or connected to GND for thermal contact."+ },+ {+ "number": "14",+ "name": "NC",+ "type": "unconnected",+ "description": "No connection; pin can be left floating or connected to GND for thermal contact."+ },+ {+ "number": "15",+ "name": "SS",+ "type": "passive",+ "description": "Soft-start capacitor pin; capacitor connected to ground sets startup time (100µs typical if floating)."+ },+ {+ "number": "16",+ "name": "FB",+ "type": "input",+ "description": "Feedback input for external resistor divider network that sets the output voltage; must not be left floating."+ },+ {+ "number": "17",+ "name": "NC",+ "type": "unconnected",+ "description": "No connection; pin can be left floating or connected to GND for thermal contact."+ },+ {+ "number": "18",+ "name": "OUT",+ "type": "power_out",+ "description": "Regulated output voltage with output range 0.8V to 3.6V; output capacitor recommended for performance."+ },+ {+ "number": "19",+ "name": "OUT",+ "type": "power_out",+ "description": "Regulated output voltage with output range 0.8V to 3.6V; output capacitor recommended for performance."+ },+ {+ "number": "20",+ "name": "OUT",+ "type": "power_out",+ "description": "Regulated output voltage with output range 0.8V to 3.6V; output capacitor recommended for performance."+ },+ {+ "number": "21",+ "name": "EP",+ "type": "passive",+ "description": "Exposed pad (from the footprint; 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