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TPS7A74

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1.5-A low-dropout (LDO) linear regulator with programmable soft start

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Data sheet

TPS7A74

ACTIVE
Data sheet Order now

Product details

Rating Catalog Vin (max) (V) 6 Vin (min) (V) 0.8 Iout (max) (A) 1.5 Output options Adjustable Output Vout (max) (V) 3.6 Vout (min) (V) 0.65 Noise (µVrms) 7 PSRR at 100 KHz (dB) 30 Iq (typ) (mA) 0.55 Features Enable, Foldback Overcurrent protection, Output discharge, Soft start Thermal resistance θJA (°C/W) 49.3 Load capacitance (min) (µF) 10 Regulated outputs (#) 1 Accuracy (%) 1.5 Dropout voltage (Vdo) (typ) (mV) 150 Operating temperature range (°C) -40 to 125
Rating Catalog Vin (max) (V) 6 Vin (min) (V) 0.8 Iout (max) (A) 1.5 Output options Adjustable Output Vout (max) (V) 3.6 Vout (min) (V) 0.65 Noise (µVrms) 7 PSRR at 100 KHz (dB) 30 Iq (typ) (mA) 0.55 Features Enable, Foldback Overcurrent protection, Output discharge, Soft start Thermal resistance θJA (°C/W) 49.3 Load capacitance (min) (µF) 10 Regulated outputs (#) 1 Accuracy (%) 1.5 Dropout voltage (Vdo) (typ) (mV) 150 Operating temperature range (°C) -40 to 125
WSON (DSD) 8 9 mm² 3 x 3
  • VOUT range: 0.65 V to 3.6 V
  • Ultra-low VIN range: 0.65 V to 6 V
  • VBIAS range: 1.7 V to 6 V
  • Low dropout: 150 mV typical at 1.5 A, VBIAS = 5 V
  • Noise: 7.1 µVRMS
  • PSRR:
    • 70 dB at 1 kHz
    • 60 dB at 10 kHz
    • 55 dB at 100 kHz
    • 50 dB at 1 MHz
  • 1.5% accuracy over line, load, and temperature
  • Programmable soft-start provides linear voltage start-up
  • VBIAS permits low VIN operation with good transient response
  • UVLO on both IN and BIAS
  • Stable with any output capacitor ≥ 10 µF
  • Package: Small, 3-mm × 3-mm × 0.8-mm WSON-8
  • VOUT range: 0.65 V to 3.6 V
  • Ultra-low VIN range: 0.65 V to 6 V
  • VBIAS range: 1.7 V to 6 V
  • Low dropout: 150 mV typical at 1.5 A, VBIAS = 5 V
  • Noise: 7.1 µVRMS
  • PSRR:
    • 70 dB at 1 kHz
    • 60 dB at 10 kHz
    • 55 dB at 100 kHz
    • 50 dB at 1 MHz
  • 1.5% accuracy over line, load, and temperature
  • Programmable soft-start provides linear voltage start-up
  • VBIAS permits low VIN operation with good transient response
  • UVLO on both IN and BIAS
  • Stable with any output capacitor ≥ 10 µF
  • Package: Small, 3-mm × 3-mm × 0.8-mm WSON-8

The TPS7A74 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 well-suited for powering many different types of processors and application-specific integrated circuits (ASICs). The enable input allows for 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 1.5% accuracy over load, line, temperature, and process. The device is stable with any type of capacitor greater than or equal to 10 µF, and is fully specified for TJ = –40°C to +125°C. The TPS7A74 is offered in a small, 3-mm × 3-mm, WSON-8 package, yielding a highly compact, total solution size.

The TPS7A74 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 well-suited for powering many different types of processors and application-specific integrated circuits (ASICs). The enable input allows for 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 1.5% accuracy over load, line, temperature, and process. The device is stable with any type of capacitor greater than or equal to 10 µF, and is fully specified for TJ = –40°C to +125°C. The TPS7A74 is offered in a small, 3-mm × 3-mm, WSON-8 package, yielding a highly compact, total solution size.
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Technical documentation

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* Data sheet TPS7A74 1.5-A, Low-Dropout Linear Regulator With Programmable Soft-Start datasheet (Rev. B) PDF | HTML 11 Aug 2022
White paper Demystifying LDO Turn-On (Start-Up) Time (Rev. B) PDF | HTML 10 Mar 2026

Design & development

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Evaluation board

TPS7A74EVM-068 — TPS7A74 evaluation module for 1.5-A LDO linear regulator with programmable soft start

The TPS7A74 evaluation module (EVM) helps design engineers evaluate the operation and performance of the TPS7A74 linear regulator for possible use in their own circuit application. This EVM configuration contains a single low-noise, small-size, linear regulator for a wide range of applications. The (...)

User guide: PDF | HTML
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Simulation model

TPS7A74 PSpice Transient Model

SBVM990.ZIP (63 KB) - PSpice Model
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