component
TPS74401KTWR
Public Made by Adomby adom
Texas Instruments Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-263-7. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownTPS74401KTWR
Texas Instruments · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-263-7
TPS74401KTWR from Texas Instruments, in a TO-263-7. 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 | SS | passive | Soft-start capacitor pin where an external capacitor to ground sets the output ramp-up time, with 100µs typical time if left floating. |
| 2 | FB | input | Feedback input connected to external resistor divider network that sets the output voltage, and must not be left floating. |
| 3 | OUT | output | Regulated output voltage pin; no capacitor required for stability but recommended for excellent transient response. |
| 4 | GND | power_in | Ground connection pin. |
| 5 | IN | power_in | Unregulated input supply pin; 1µF or greater input capacitor recommended for best performance. |
| 6 | BIAS | power_in | Bias supply voltage pin powering internal error amplifier, reference, and control circuits with 1µF minimum capacitor (4.7µF if connected to IN). |
| 7 | EN | input | Enable input pin where voltage above 1.1V enables the regulator and below 0.4V disables to shutdown mode, must not float. |
| 8 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TO-263-7 |
| Category | Power Management (PMIC) |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
TPS74401KTWR - Footprint:
Package_TO_SOT_SMD:TO-263-7_TabPin8 - 3D model: TO-263-7 (KiCad packages3D, STEP)
- 3D model files:
tps74401ktwr-etched.step/tps74401ktwr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tps74401ktwr.step/tps74401ktwr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (50 pp, sha256
1e27517f33e62170, retrieved 2026-09-24, 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 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-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).