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TPS79401DGNR

Texas Instruments · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · MSOP-8-EP

TPS79401DGNR from Texas Instruments, in a MSOP-8-EP. 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 Regulator output; the device delivers up to 250 mA (IOUT 0 to 250 mA recommended) and requires a COUT of at least 1.0 µF (2.2 µF typical) to OUT-GND.
2 NC unconnected Not internally connected; connect to GND for better thermal performance or leave floating.
3 FB input Feedback input for the adjustable device, which sets VOUT through the external R1/R2 divider referenced to the 1.225 V internal reference (VREF 1.201 V to 1.25 V).
4 NR/NC input On the older chip this is the noise-reduction pin, where an external capacitor CNR of 0 to 100 nF (10 nF nominal) filters bandgap noise; on the newer chip it is not connected and may be tied to GND or left floating.
5 GND power_in Regulator ground.
6 EN input Enable input, active high: the device is on when EN is above VEN(HI) (1.7 V minimum on the older chip, 0.85 × VIN on the newer chip) and off when EN is below VEN(LOW); VEN range is 0 to 5.5 V.
7 NC unconnected Not internally connected; connect to GND for better thermal performance or leave floating.
8 IN power_in Unregulated input supply; VIN must be between 2.7 V and 5.5 V, and a 1 µF or larger ceramic capacitor should be placed close to the pin.
9 EP passive Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package MSOP-8-EP
Category Power Management (PMIC)
Pins 9

CAD (KiCad official)

  • Symbol: TPS79401DGNR
  • Footprint: Package_SO:MSOP-8-1EP_3x3mm_P0.65mm_EP1.5x1.8mm
  • 3D model: MSOP-8-EP (KiCad packages3D, STEP)
  • 3D model files: tps79401dgnr-etched.step / tps79401dgnr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tps79401dgnr.step / tps79401dgnr.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 2026-10-08, 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