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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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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 (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