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TPS74401
  • TPS74401
  • TPS74401
  • TPS74401
  • TPS74401
  • TPS74401

TPS74401

ACTIVE

3-A, low-VIN (0.8-V), low-noise, high-PSRR, adjustable ultra-low-dropout voltage regulator

Texas Instruments TPS74401 Product Info

1 April 2026 0

Parameters

Rating

Catalog

Vin (max) (V)

5.5

Vin (min) (V)

0.8

Iout (max) (A)

3

Output options

Adjustable Output

Vout (max) (V)

3.6

Vout (min) (V)

0.8

Noise (µVrms)

20

PSRR at 100 KHz (dB)

50

Iq (typ) (mA)

3

Features

Enable, Power good, Soft start

Thermal resistance θJA (°C/W)

27

Load capacitance (min) (µF)

2.2

Regulated outputs (#)

1

Accuracy (%)

1

Dropout voltage (Vdo) (typ) (mV)

120

Operating temperature range (°C)

-40 to 125

Package

TO-263 (KTW)-7-153.924 mm² 10.1 x 15.24

Features

  • Input voltage range: 1.1V to 5.5V
  • Adjustable start-up in-rush control
  • 1% accuracy over line, load, and temperature
  • VBIAS permits low VIN operation with good transient response

  • Adjustable output: 0.8V to 3.6V
  • Ultra-low dropout:
    • 115mV (typical, legacy chip) at 3.0A
    • 120mV (typical, new chip) at 3.0A
  • Stable with any or no output capacitor (legacy chip)
  • Stable with any output capacitor ≥2.2µF (new chip)

  • Power-good (PG) output allows supply monitoring or provides a sequencing signal for other supplies
  • Packages:
    • 5mm × 5mm × 1mm VQFN (RGW)
    • 3.5mm × 3.5mm VQFN (RGR), and DDPAK-7 (legacy chip)
  • Input voltage range: 1.1V to 5.5V
  • Adjustable start-up in-rush control
  • 1% accuracy over line, load, and temperature
  • VBIAS permits low VIN operation with good transient response

  • Adjustable output: 0.8V to 3.6V
  • Ultra-low dropout:
    • 115mV (typical, legacy chip) at 3.0A
    • 120mV (typical, new chip) at 3.0A
  • Stable with any or no output capacitor (legacy chip)
  • Stable with any output capacitor ≥2.2µF (new chip)

  • Power-good (PG) output allows supply monitoring or provides a sequencing signal for other supplies
  • Packages:
    • 5mm × 5mm × 1mm VQFN (RGW)
    • 3.5mm × 3.5mm VQFN (RGR), and DDPAK-7 (legacy chip)

Description

The TPS74401 low-dropout (LDO) linear regulators provide an easy-to-use robust power-management option for a wide variety of applications. The user-programmable soft-start minimizes stress on the input power source by reducing capacitive inrush current on start-up. The soft-start is monotonic and designed for powering many different types of processors and application-specific integrated circuits (ASICs). The enable input and power-good output allow easy sequencing with external regulators. Complete flexibility lets the user configure a plan that meets the sequencing requirements of field-programmable gate arrays (FPGAs), digital signal processors (DSPs), and other applications with specific start-up requirements.

A precision reference and error amplifier deliver 1% accuracy over load, line, temperature, and process. The device is stable without an output capacitor (legacy chip) or with any type of capacitor ≥ 2.2µF (new chip). The device is fully specified from TJ = –40°C to +125°C.

The TPS74401 low-dropout (LDO) linear regulators provide an easy-to-use robust power-management option for a wide variety of applications. The user-programmable soft-start minimizes stress on the input power source by reducing capacitive inrush current on start-up. The soft-start is monotonic and designed for powering many different types of processors and application-specific integrated circuits (ASICs). The enable input and power-good output allow easy sequencing with external regulators. Complete flexibility lets the user configure a plan that meets the sequencing requirements of field-programmable gate arrays (FPGAs), digital signal processors (DSPs), and other applications with specific start-up requirements.

A precision reference and error amplifier deliver 1% accuracy over load, line, temperature, and process. The device is stable without an output capacitor (legacy chip) or with any type of capacitor ≥ 2.2µF (new chip). The device is fully specified from TJ = –40°C to +125°C.

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