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Linear & low-dropout (LDO) regulators

TPS74701

ACTIVE

500-mA, low-VIN (0.8-V), adjustable ultra-low-dropout voltage regulator with power good & enable

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Data sheet

TPS74701

ACTIVE
Data sheet Order now

Product details

Output options Adjustable Output Iout (max) (A) 0.5 Vin (max) (V) 5.5 Vin (min) (V) 0.8 Vout (max) (V) 3.6 Vout (min) (V) 0.8 Rating Catalog Noise (µVrms) 20 PSRR at 100 KHz (dB) 27 Iq (typ) (mA) 1 Thermal resistance θJA (°C/W) 42 Load capacitance (min) (µF) 2.2 Regulated outputs (#) 1 Features Enable, Power good, Soft start Accuracy (%) 2 Dropout voltage (Vdo) (typ) (mV) 50 Operating temperature range (°C) -40 to 125
Output options Adjustable Output Iout (max) (A) 0.5 Vin (max) (V) 5.5 Vin (min) (V) 0.8 Vout (max) (V) 3.6 Vout (min) (V) 0.8 Rating Catalog Noise (µVrms) 20 PSRR at 100 KHz (dB) 27 Iq (typ) (mA) 1 Thermal resistance θJA (°C/W) 42 Load capacitance (min) (µF) 2.2 Regulated outputs (#) 1 Features Enable, Power good, Soft start Accuracy (%) 2 Dropout voltage (Vdo) (typ) (mV) 50 Operating temperature range (°C) -40 to 125
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:
    • 50 mV typically at 500 mA, V BIAS = 5 V
  • Power-good (PG) output allows supply monitoring or provides a sequencing signal for other supplies
  • Accuracy over line, load, and temperature: 2%
  • Programmable soft-start provides linear voltage start-up
  • V BIAS permits low V IN operation with good transient response
  • Stable with any output capacitor ≥ 2.2 µF
  • Available in a small 3-mm × 3-mm × 1-mm 10-pin package
  • 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:
    • 50 mV typically at 500 mA, V BIAS = 5 V
  • Power-good (PG) output allows supply monitoring or provides a sequencing signal for other supplies
  • Accuracy over line, load, and temperature: 2%
  • Programmable soft-start provides linear voltage start-up
  • V BIAS permits low V IN operation with good transient response
  • Stable with any output capacitor ≥ 2.2 µF
  • Available in a small 3-mm × 3-mm × 1-mm 10-pin package

The TPS74701 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 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. 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 greater than or equal to 2.2 µF, and is fully specified from –40°C to +125°C. The TPS74701 is offered in a small 3-mm × 3-mm VSON-10 package for compatibility with the TPS74801.

The TPS74701 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 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. 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 greater than or equal to 2.2 µF, and is fully specified from –40°C to +125°C. The TPS74701 is offered in a small 3-mm × 3-mm VSON-10 package for compatibility with the TPS74801.
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Technical documentation

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Type Title Date
* Data sheet TPS74701 500-mA, Low-Dropout Linear Regulator With Programmable Soft-Start datasheet (Rev. H) PDF | HTML 26 Apr 2023
EVM User's guide TPS74701EVM-177, TPS74801EVM-177 Evaluation Module (Rev. B) PDF | HTML 08 May 2023
Application note LDO Noise Demystified (Rev. B) PDF | HTML 18 Aug 2020
Application note Using Thermal Calculation Tools for Analog Components (Rev. A) 30 Aug 2019
Application note A Topical Index of TI LDO Application Notes (Rev. F) 27 Jun 2019
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
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
White paper Minimum Power Specifications for High-Performance ADC Power-Supply Designs 31 Mar 2016
Technical article Designing a power supply solution for pipeline ADCs – Part 2 PDF | HTML 04 Sep 2015
Application note Simple Power Solution Using LDOs for the DM365 (Rev. A) 11 Sep 2009
Application note Simple Power Solution Using LDOs for the DM365 04 Aug 2009
Application note Simple Power Solution Using LDOs For TMS320C2834x MCU 24 Jul 2009

Design & development

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Simulation model

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TPS74701 TINA-TI Transient Spice Model

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