TPS74901

ACTIVE

3-A, low-VIN (0.8-V) adjustable ultra-low-dropout voltage regulator with power good and enable

Product details

Output options Adjustable Output Iout (max) (A) 3 Vin (max) (V) 5.5 Vin (min) (V) 0.8 Vout (max) (V) 3.6 Vout (min) (V) 0.8 Noise (µVrms) 20 Iq (typ) (mA) 3 Thermal resistance θJA (°C/W) 34, 36 Rating Catalog Load capacitance (min) (µF) 2.2 Regulated outputs (#) 1 Features Enable, Power good, Soft start Accuracy (%) 2 PSRR at 100 KHz (dB) 28 Dropout voltage (Vdo) (typ) (mV) 60, 120 Operating temperature range (°C) -40 to 125
Output options Adjustable Output Iout (max) (A) 3 Vin (max) (V) 5.5 Vin (min) (V) 0.8 Vout (max) (V) 3.6 Vout (min) (V) 0.8 Noise (µVrms) 20 Iq (typ) (mA) 3 Thermal resistance θJA (°C/W) 34, 36 Rating Catalog Load capacitance (min) (µF) 2.2 Regulated outputs (#) 1 Features Enable, Power good, Soft start Accuracy (%) 2 PSRR at 100 KHz (dB) 28 Dropout voltage (Vdo) (typ) (mV) 60, 120 Operating temperature range (°C) -40 to 125
TO-263 (KTW) 7 153.924 mm² 10.1 x 15.24 VQFN (RGW) 20 25 mm² 5 x 5 VSON (DRC) 10 9 mm² 3 x 3
  • V OUT range: 0.8 V to 3.6 V
  • Ultra-low V IN range: 0.8 V to 5.5 V
  • V BIAS range: 2.7 V to 5.5 V
  • Low dropout: 120 mV (typical) at 3 A
  • Power-good (PG) output allows supply monitoring or provides a sequencing signal for other supplies
  • Accuracy over line, load, and temperature: 2%
  • Adjustable start-up in-rush control
  • V BIAS permits low V IN operation with good transient response
  • Stable with any output capacitor ≥ 2.2 µF
  • Packages:
    • Small, 3-mm × 3-mm × 1-mm VSON
    • 5-mm × 5-mm × 1-mm VQFN and DDPAK-7
  • Active high enable
  • V OUT range: 0.8 V to 3.6 V
  • Ultra-low V IN range: 0.8 V to 5.5 V
  • V BIAS range: 2.7 V to 5.5 V
  • Low dropout: 120 mV (typical) at 3 A
  • Power-good (PG) output allows supply monitoring or provides a sequencing signal for other supplies
  • Accuracy over line, load, and temperature: 2%
  • Adjustable start-up in-rush control
  • V BIAS permits low V IN operation with good transient response
  • Stable with any output capacitor ≥ 2.2 µF
  • Packages:
    • Small, 3-mm × 3-mm × 1-mm VSON
    • 5-mm × 5-mm × 1-mm VQFN and DDPAK-7
  • Active high enable

The TPS74901 low-dropout (LDO) linear regulator provides an easy-to-use, robust power management solution for a wide variety of applications. User-programmable soft-start minimizes stress on the input power source by reducing capacitive inrush current during 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. This complete flexibility allows a solution to be configured that meets the sequencing requirements of field-programmable gate arrays (FPGAs), digital signal processors (DSPs), and other applications with special start-up requirements.

A precision reference and error amplifier deliver 2% accuracy over load, line, temperature, and process. The device is stable with any type of capacitor ≥ 2.2 µF, and the device is fully specified from   –40°C to +125°C. The TPS74901 is offered in a small (3 mm × 3 mm) VSON package and a small (5-mm × 5-mm) VQFN package, yielding a highly compact total solution size. The device is also available in a DDPAK-7 package.

The TPS74901 low-dropout (LDO) linear regulator provides an easy-to-use, robust power management solution for a wide variety of applications. User-programmable soft-start minimizes stress on the input power source by reducing capacitive inrush current during 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. This complete flexibility allows a solution to be configured that meets the sequencing requirements of field-programmable gate arrays (FPGAs), digital signal processors (DSPs), and other applications with special start-up requirements.

A precision reference and error amplifier deliver 2% accuracy over load, line, temperature, and process. The device is stable with any type of capacitor ≥ 2.2 µF, and the device is fully specified from   –40°C to +125°C. The TPS74901 is offered in a small (3 mm × 3 mm) VSON package and a small (5-mm × 5-mm) VQFN package, yielding a highly compact total solution size. The device is also available in a DDPAK-7 package.

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TPS7A84 ACTIVE 3-A, low-VIN, low-noise, ultra-low-dropout voltage regulator with power good with high-accuracy TPS7A84 is the next-generation version of this device with lower noise.

Technical documentation

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Type Title Date
* Data sheet TPS74901 3-A, Low Dropout Linear Regulator With Programmable Soft-Start datasheet (Rev. J) PDF | HTML 24 Apr 2023
Application note LDO Noise Demystified (Rev. B) PDF | HTML 18 Aug 2020
Application note A Topical Index of TI LDO Application Notes (Rev. F) 27 Jun 2019
Selection guide Low Dropout Regulators Quick Reference Guide (Rev. P) 21 Mar 2018
Application note LDO PSRR Measurement Simplified (Rev. A) PDF | HTML 09 Aug 2017
Analog Design Journal Q2 2009 Issue Analog Applications Journal 01 May 2009
Analog Design Journal Taming linear-regulator inrush currents 01 May 2009
EVM User's guide TPS74901EVM-210 (Rev. B) 24 Jul 2008
EVM User's guide TPS74901EVM-210 14 Apr 2007

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

TPS74901EVM-210 — TPS74901 evaluation module for 3-A, low-VIN (0.8-V) adjustable ultra-low-dropout voltage regulator

The TPS74901EVM-210 facilitates evaluation of the TPS74901 low-dropout linear regulator IC.

These regulators require a low-power bias voltage, VBIAS, and a power input voltage, VIN. The regulator is capable of providing output voltages down to 0.8 V, output currents up to 3 A and has an (...)

User guide: PDF
Not available on TI.com
Simulation model

TPS74901 PSpice Transient Model (Rev. B)

SLIM031B.ZIP (60 KB) - PSpice Model
Simulation model

TPS74901 TINA-TI Transient Reference Design

SLIM257.TSC (94 KB) - TINA-TI Spice Model
Simulation model

TPS74901 TINA-TI Transient Spice Model

SLIM256.ZIP (35 KB) - TINA-TI Spice Model
Simulation model

TPS74901 Unencrypted PSpice Transient Model

SBVM634.ZIP (3 KB) - PSpice Model
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TIDA-00826 — 50-Ohm 2-GHz Oscilloscope Front-end Reference Design

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Package Pins Download
TO-263 (KTW) 7 View options
VQFN (RGW) 20 View options
VSON (DRC) 10 View options

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