Home Power management Linear & low-dropout (LDO) regulators

TPS74301

ACTIVE

1.5-A, low-VIN (0.8-V), high-accuracy, adjustable ultra-low-dropout voltage regulator with PG

Product details

Rating Catalog Vin (max) (V) 5.5 Vin (min) (V) 0.8 Iout (max) (A) 1.5 Output options Adjustable Output, Tracking Output Vout (max) (V) 3.6 Vout (min) (V) 0.8 Noise (µVrms) 20 PSRR at 100 KHz (dB) 45 Iq (typ) (mA) 3 Features Enable, Power good Thermal resistance θJA (°C/W) 20 Load capacitance (min) (µF) 2.2 Regulated outputs (#) 1 Accuracy (%) 1 Dropout voltage (Vdo) (typ) (mV) 55 Operating temperature range (°C) -40 to 125
Rating Catalog Vin (max) (V) 5.5 Vin (min) (V) 0.8 Iout (max) (A) 1.5 Output options Adjustable Output, Tracking Output Vout (max) (V) 3.6 Vout (min) (V) 0.8 Noise (µVrms) 20 PSRR at 100 KHz (dB) 45 Iq (typ) (mA) 3 Features Enable, Power good Thermal resistance θJA (°C/W) 20 Load capacitance (min) (µF) 2.2 Regulated outputs (#) 1 Accuracy (%) 1 Dropout voltage (Vdo) (typ) (mV) 55 Operating temperature range (°C) -40 to 125
VQFN (RGW) 20 25 mm² (5 mm × 5 mm) TO-263 (KTW) 7 153.924 mm² (10.1 mm × 15.24 mm)
  • Track Pin Allows for Flexible Power-Up Sequencing
  • 1% Accuracy Over Line, Load, and Temperature
  • Supports Input Voltages as Low as 0.9V with External Bias Supply
  • Adjustable Output (0.8V to 3.6V)
  • Ultra-Low Dropout:
    • 55mV at 1.5A (typ)
  • Stable with any output capacitor ≥ 2.2µF (new chip)
  • Stable with any or no Output Capacitor (legacy chip)
  • Excellent Transient Response
  • Available in 5mm × 5mm × 1mm QFN and DDPAK-7 Packages
  • Open-Drain Power-Good
  • Active High Enable
  • Track Pin Allows for Flexible Power-Up Sequencing
  • 1% Accuracy Over Line, Load, and Temperature
  • Supports Input Voltages as Low as 0.9V with External Bias Supply
  • Adjustable Output (0.8V to 3.6V)
  • Ultra-Low Dropout:
    • 55mV at 1.5A (typ)
  • Stable with any output capacitor ≥ 2.2µF (new chip)
  • Stable with any or no Output Capacitor (legacy chip)
  • Excellent Transient Response
  • Available in 5mm × 5mm × 1mm QFN and DDPAK-7 Packages
  • Open-Drain Power-Good
  • Active High Enable

The TPS743 low-dropout (LDO) linear regulator provides an easy-to-use robust power management design for a wide variety of applications. The TRACK pin allows the output to track an external supply. This feature is useful in minimizing the stress on ESD structures that are present between the CORE and I/O power pins of many processors. The enable input and power-good output allow easy sequencing with external regulators. This complete flexibility allows the user to configure a solution that meets the sequencing requirements of FPGAs, DSPs, and other applications with special start-up requirements.

A precision reference and error amplifier deliver 1% accuracy over load, line, temperature, and process. The device is stable with any type of capacitor greater than or equal to 2.2µF. Each LDO is stable with low-cost ceramic output capacitors and the family is fully specified from –40°C to 125°C.

The TPS743 low-dropout (LDO) linear regulator provides an easy-to-use robust power management design for a wide variety of applications. The TRACK pin allows the output to track an external supply. This feature is useful in minimizing the stress on ESD structures that are present between the CORE and I/O power pins of many processors. The enable input and power-good output allow easy sequencing with external regulators. This complete flexibility allows the user to configure a solution that meets the sequencing requirements of FPGAs, DSPs, and other applications with special start-up requirements.

A precision reference and error amplifier deliver 1% accuracy over load, line, temperature, and process. The device is stable with any type of capacitor greater than or equal to 2.2µF. Each LDO is stable with low-cost ceramic output capacitors and the family is fully specified from –40°C to 125°C.

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Technical documentation

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Top documentation Type Title Format options Date
* Data sheet TPS74301 1.5A Ultra-LDO With Programmable Sequencing datasheet (Rev. L) PDF | HTML Dec 9, 2024
Application note LDO Noise Demystified (Rev. B) PDF | HTML Aug 18, 2020
Application note A Topical Index of TI LDO Application Notes (Rev. F) Jun 27, 2019
Selection guide Low Dropout Regulators Quick Reference Guide (Rev. P) Mar 21, 2018
Application note LDO PSRR Measurement Simplified (Rev. A) PDF | HTML Aug 9, 2017
Application note Using New Thermal Metrics Dec 15, 2009
Analog design Journal Simultaneous power-down sequencing with the TPS74x01 family of linear regulators Aug 10, 2007
Analog design Journal Q3 2007 Issue Analog Applications Journal Aug 10, 2007
Analog design Journal A 3-A, 1.2-Vout linear regulator with 80% efficiency and Plost < 1W Oct 10, 2006

Design & development

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

Evaluation board

TPS74301EVM-118 — TPS74301 Evaluation Module

The TPS74301EVM-118 evaluation module (EVM) is designed to help the user easily evaluate and test the operation and functionality of the TPS74301 LDO linear regulator. The EVM uses the TPS74301, 1.5 A linear regulator with tracking and integrated power good (PG). Refer to the (...)

User guide: PDF
Supported products & hardware
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Simulation model

TPS74301 PSpice Transient Model (Rev. B)

SLIM015B.ZIP (62 KB) - PSpice model
Supported products & hardware
Simulation model

TPS74301 TINA-TI Transient Reference Design

SLIM287.TSC (105 KB) - TINA-TI reference design
Supported products & hardware
Simulation model

TPS74301 TINA-TI Transient Spice Model

SLIM286.ZIP (36 KB) - TINA-TI Spice model
Supported products & hardware
Simulation model

TPS74301 Unencrypted PSpice Transient Model

SBVM635.ZIP (2 KB) - PSpice model
Supported products & hardware
Package Pins CAD symbols, footprints & 3D models
VQFN (RGW) 20 Ultra Librarian
TO-263 (KTW) 7 Ultra Librarian

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