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TPS74401MRGWREP
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Texas Instruments Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, VQFN-20-EP(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+57@@ -0,0 +1,57 @@+# TPS74401MRGWREP++**Texas Instruments** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · VQFN-20-EP(5x5)++TPS74401MRGWREP from Texas Instruments, in a VQFN-20-EP(5x5). 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; stable with low-cost ceramic or no output capacitor; internally current limited to 3.5 A. |+| 2 | NC | unconnected | No connection; pin can be left floating or grounded for improved thermal contact. |+| 3 | NC | unconnected | No connection; pin can be left floating or grounded for improved thermal contact. |+| 4 | NC | unconnected | No connection; pin can be left floating or grounded for improved thermal contact. |+| 5 | IN | power_in | Unregulated input supply voltage; range -0.3 to +6 V; minimum input voltage is VOUT + 115 mV dropout; supports inputs as low as 0.9 V with external BIAS supply. |+| 6 | IN | power_in | Unregulated input supply voltage; range -0.3 to +6 V; minimum input voltage is VOUT + 115 mV dropout; supports inputs as low as 0.9 V with external BIAS supply. |+| 7 | IN | power_in | Unregulated input supply voltage; range -0.3 to +6 V; minimum input voltage is VOUT + 115 mV dropout; supports inputs as low as 0.9 V with external BIAS supply. |+| 8 | IN | power_in | Unregulated input supply voltage; range -0.3 to +6 V; minimum input voltage is VOUT + 115 mV dropout; supports inputs as low as 0.9 V with external BIAS supply. |+| 9 | PG | tri_state | Power-good open-drain active-high output indicating VOUT status; range -0.3 to +6 V; sink current 0 to +1.5 mA; requires pull-up resistor 10kΩ to 1MΩ. |+| 10 | BIAS | power_in | Bias input voltage for error amplifier, reference, and internal control circuits; range -0.3 to +6 V. |+| 11 | EN | input | Enable pin; voltage range -0.3 to +6 V; high enables regulator, low puts device into shutdown mode; must not be left floating. |+| 12 | GND | power_in | Ground reference; connect to ground plane for thermal performance and low-impedance return path. |+| 13 | NC | unconnected | No connection; pin can be left floating or grounded for improved thermal contact. |+| 14 | NC | unconnected | No connection; pin can be left floating or grounded for improved thermal contact. |+| 15 | SS | input | Soft-start pin; external capacitor sets startup ramp time; range -0.3 to +6 V; if left floating, default ramp time is approximately 100 ms. |+| 16 | FB | input | Feedback pin for output voltage programming via external resistor divider network; range -0.3 to +6 V; must not be left floating. |+| 17 | NC | unconnected | No connection; pin can be left floating or grounded for improved thermal contact. |+| 18 | OUT | power_out | Regulated output voltage; stable with low-cost ceramic or no output capacitor; internally current limited to 3.5 A. |+| 19 | OUT | power_out | Regulated output voltage; stable with low-cost ceramic or no output capacitor; internally current limited to 3.5 A. |+| 20 | OUT | power_out | Regulated output voltage; stable with low-cost ceramic or no output capacitor; internally current limited to 3.5 A. |+| 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-EP(5x5) |+| Category | Power Management (PMIC) |+| Pins | 21 |++## CAD (KiCad official)++- Symbol: `TPS74401MRGWREP`+- Footprint: `Package_DFN_QFN:QFN-20-1EP_5x5mm_P0.65mm_EP3.35x3.35mm`+- 3D model: VQFN-20-EP(5x5) (KiCad packages3D, STEP)+- 3D model files: `tps74401mrgwrep-etched.step` / `tps74401mrgwrep-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tps74401mrgwrep.step` / `tps74401mrgwrep.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-ep) (27 pp, sha256 `4c6146c0e3d8b11d`, retrieved 2026-10-06, 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/tps74401mrgwrep-datasheet.pdf)
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stable with low-cost ceramic or no output capacitor; internally current limited to 3.5 A."+ },+ {+ "number": "2",+ "name": "NC",+ "type": "unconnected",+ "description": "No connection; pin can be left floating or grounded for improved thermal contact."+ },+ {+ "number": "3",+ "name": "NC",+ "type": "unconnected",+ "description": "No connection; pin can be left floating or grounded for improved thermal contact."+ },+ {+ "number": "4",+ "name": "NC",+ "type": "unconnected",+ "description": "No connection; pin can be left floating or grounded for improved thermal contact."+ },+ {+ "number": "5",+ "name": "IN",+ "type": "power_in",+ "description": "Unregulated input supply voltage; range -0.3 to +6 V; minimum input voltage is VOUT + 115 mV dropout; supports inputs as low as 0.9 V with external BIAS supply."+ },+ {+ "number": "6",+ "name": "IN",+ "type": "power_in",+ "description": "Unregulated input supply voltage; range -0.3 to +6 V; minimum input voltage is VOUT + 115 mV dropout; supports inputs as low as 0.9 V with external BIAS supply."+ },+ {+ "number": "7",+ "name": "IN",+ "type": "power_in",+ "description": "Unregulated input supply voltage; range -0.3 to +6 V; minimum input voltage is VOUT + 115 mV dropout; supports inputs as low as 0.9 V with external BIAS supply."+ },+ {+ "number": "8",+ "name": "IN",+ "type": "power_in",+ "description": "Unregulated input supply voltage; range -0.3 to +6 V; minimum input voltage is VOUT + 115 mV dropout; supports inputs as low as 0.9 V with external BIAS supply."+ },+ {+ "number": "9",+ "name": "PG",+ "type": "tri_state",+ "description": "Power-good open-drain active-high output indicating VOUT status; range -0.3 to +6 V; sink current 0 to +1.5 mA; requires pull-up resistor 10kΩ to 1MΩ."+ },+ {+ "number": "10",+ "name": "BIAS",+ "type": "power_in",+ "description": "Bias input voltage for error amplifier, reference, and internal control circuits; range -0.3 to +6 V."+ },+ {+ "number": "11",+ "name": "EN",+ "type": "input",+ "description": "Enable pin; voltage range -0.3 to +6 V; high enables regulator, low puts device into shutdown mode; must not be left floating."+ },+ {+ "number": "12",+ "name": "GND",+ "type": "power_in",+ "description": "Ground reference; connect to ground plane for thermal performance and low-impedance return path."+ },+ {+ "number": "13",+ "name": "NC",+ "type": "unconnected",+ "description": "No connection; pin can be left floating or grounded for improved thermal contact."+ },+ {+ "number": "14",+ "name": "NC",+ "type": "unconnected",+ "description": "No connection; pin can be left floating or grounded for improved thermal contact."+ },+ {+ "number": "15",+ "name": "SS",+ "type": "input",+ "description": "Soft-start pin; external capacitor sets startup ramp time; range -0.3 to +6 V; if left floating, default ramp time is approximately 100 ms."+ },+ {+ "number": "16",+ "name": "FB",+ "type": "input",+ "description": "Feedback pin for output voltage programming via external resistor divider network; range -0.3 to +6 V; must not be left floating."+ },+ {+ "number": "17",+ "name": "NC",+ "type": "unconnected",+ "description": "No connection; pin can be left floating or grounded for improved thermal contact."+ },+ {+ "number": "18",+ "name": "OUT",+ "type": "power_out",+ "description": "Regulated output voltage; stable with low-cost ceramic or no output capacitor; internally current limited to 3.5 A."+ },+ {+ "number": "19",+ "name": "OUT",+ "type": "power_out",+ "description": "Regulated output voltage; stable with low-cost ceramic or no output capacitor; internally current limited to 3.5 A."+ },+ {+ "number": "20",+ "name": "OUT",+ "type": "power_out",+ "description": "Regulated output voltage; stable with low-cost ceramic or no output capacitor; internally current limited to 3.5 A."+ },+ {+ "number": "21",+ "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 21 added from the footprint"+ ],+ "pages_sent": 12,+ "cost_usd": 0.1366,+ "at": "2026-10-06T02:00:49"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/tps74401-ep",+ "pages": 27,+ "sha256": "4c6146c0e3d8b11d",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 21,+ "described": 21,+ "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]"+ }+}