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Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206

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docs	Publish 0.1.0 · Ray	22d ago
viewers	tps79401dcqr: viewers · Ray	22d ago
package.json	tps79401dcqr: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain S… · Ray	17d ago
page.json	tps79401dcqr: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain S… · Ray	17d ago
README.md	Publish 0.1.0 · Ray	22d ago
tps79401dcqr-etched.glb	tps79401dcqr: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain S… · Ray	17d ago
tps79401dcqr-etched.step	tps79401dcqr: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain S… · Ray	17d ago
tps79401dcqr-hero.glb	tps79401dcqr: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain S… · Ray	17d ago
tps79401dcqr-hero.overlay.json	tps79401dcqr: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain S… · Ray	17d ago
tps79401dcqr.glb	Publish 0.1.0 · Ray	22d ago
tps79401dcqr.kicad_mod	Publish 0.1.0 · Ray	22d ago
tps79401dcqr.kicad_sym	Publish 0.1.0 · Ray	22d ago
tps79401dcqr.lbr	Publish 0.1.0 · Ray	22d ago
tps79401dcqr.step	Publish 0.1.0 · Ray	22d ago

TPS79401DCQR

Texas Instruments · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-223-6

TPS79401DCQR from Texas Instruments, in a SOT-223-6. 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	EN	input	Enable input: a logic-high level enables the device and a logic-low level puts it into shutdown mode (VEN(HI) 1.7 V min at 2.7 V ≤ VIN ≤ 5.5 V; VEN(LOW) 0.7 V max; VEN absolute range -0.3 V to 6 V for the old chip).
2	IN	power_in	Unregulated input supply to the regulator, with a recommended range of 2.7 V to 5.5 V and an input capacitor of at least 1 µF to GND.
3	GND	power_in	Regulator ground, which should be connected to the ground pin and ground plane as recommended in the layout guidance.
4	OUT	power_out	Regulated output of the device; the recommended output capacitor is at least 1 µF (2.2 µF typical) to GND, with output voltage set from VFB up to 5 V.
5	FB	input	Feedback input for the adjustable device, which regulates to the internal reference of 1.225 V typical (1.201 V to 1.25 V limits).
6	GND	power_in	Ground connection on the SOT-223 tab, which is electrically grounded and must be soldered to a large copper area for heat dissipation.

Key specifications

Parameter	Value
Manufacturer	Texas Instruments
Package	SOT-223-6
Category	Power Management (PMIC)
Pins	6

CAD (KiCad official)

Symbol: TPS79401DCQR
Footprint: Package_TO_SOT_SMD:SOT-223-6
3D model: SOT-223-6 (KiCad packages3D, STEP)
3D model files: tps79401dcqr-etched.step / tps79401dcqr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tps79401dcqr.step / tps79401dcqr.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: Texas Instruments datasheet (51 pp, sha256 84291eb77a7c37c6, retrieved 2026-10-11, 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-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