TPS7A47

ACTIVE

1-A, 36-V, low-noise, high-PSRR, low-dropout voltage regulator with enable

Product details

Output options Adjustable Output, Fixed Output Iout (max) (A) 1 Vin (max) (V) 36 Vin (min) (V) 3 Vout (max) (V) 34 Vout (min) (V) 1.4 Noise (µVrms) 4 Iq (typ) (mA) 0.58 Thermal resistance θJA (°C/W) 30.5 Rating Catalog Load capacitance (min) (µF) 10 Regulated outputs (#) 1 Features Enable, Soft start Accuracy (%) 2.5 PSRR at 100 KHz (dB) 60 Dropout voltage (Vdo) (typ) (mV) 307 Operating temperature range (°C) -40 to 125
Output options Adjustable Output, Fixed Output Iout (max) (A) 1 Vin (max) (V) 36 Vin (min) (V) 3 Vout (max) (V) 34 Vout (min) (V) 1.4 Noise (µVrms) 4 Iq (typ) (mA) 0.58 Thermal resistance θJA (°C/W) 30.5 Rating Catalog Load capacitance (min) (µF) 10 Regulated outputs (#) 1 Features Enable, Soft start Accuracy (%) 2.5 PSRR at 100 KHz (dB) 60 Dropout voltage (Vdo) (typ) (mV) 307 Operating temperature range (°C) -40 to 125
VQFN (RGW) 20 25 mm² 5 x 5
  • Input Voltage Range: +3 V to +36 V
  • Output Voltage Noise:
    4 µVRMS (10 Hz, 100 kHz)
  • Power-Supply Ripple Rejection:
    • 82 dB (100 Hz)
    • > 55 dB (10 Hz, 10 MHz)
  • Two Output Voltage Modes:
    • ANY-OUT™ Version (User-Programmable
      Output via PCB Layout):
      • No External Feedback Resistors or
        Feed-Forward Capacitors Required
      • Output Voltage Range: +1.4 V to +20.5 V
    • Adjustable Version (TPS7A4701 only):
      • Output Voltage Range: +1.4 V to +34 V
  • Output Current: 1 A
  • Dropout Voltage: 307 mV at 1 A
  • CMOS Logic Level-Compatible Enable Pin
  • Built-In Fixed Current Limit and
    Thermal Shutdown
  • Available in High-Performance Thermal Package:
    5-mm × 5-mm QFN
  • Operating Temperature Range:
    –40°C to 125°C
  • Input Voltage Range: +3 V to +36 V
  • Output Voltage Noise:
    4 µVRMS (10 Hz, 100 kHz)
  • Power-Supply Ripple Rejection:
    • 82 dB (100 Hz)
    • > 55 dB (10 Hz, 10 MHz)
  • Two Output Voltage Modes:
    • ANY-OUT™ Version (User-Programmable
      Output via PCB Layout):
      • No External Feedback Resistors or
        Feed-Forward Capacitors Required
      • Output Voltage Range: +1.4 V to +20.5 V
    • Adjustable Version (TPS7A4701 only):
      • Output Voltage Range: +1.4 V to +34 V
  • Output Current: 1 A
  • Dropout Voltage: 307 mV at 1 A
  • CMOS Logic Level-Compatible Enable Pin
  • Built-In Fixed Current Limit and
    Thermal Shutdown
  • Available in High-Performance Thermal Package:
    5-mm × 5-mm QFN
  • Operating Temperature Range:
    –40°C to 125°C

The TPS7A47 is a family of positive voltage (+36 V), ultralow-noise (4 µVRMS) low-dropout linear regulators (LDO) capable of sourcing a 1-A load.

The TPS7A4700 output voltages are user-programmable (up to 20.5 V) using a printed circuit board (PCB) layout without the need of external resistors or feed-forward capacitors, thus reducing overall component count.

The TPS7A4701 output voltage can be configured with a user-programmable PCB layout (up to 20.5 V), or adjustable (up to 34 V) with external feedback resistors.

The TPS7A47 is designed with bipolar technology primarily for high-accuracy, high-precision instrumentation applications where clean voltage rails are critical to maximize system performance. This feature makes the device ideal for powering operational amplifiers, analog-to-digital converters (ADCs), digital-to-analog converters (DACs), and other high-performance analog circuitry in critical applications such as medical, radio frequency (RF), and test-and-measurement.

In addition, the TPS7A47 is ideal for post dc-dc converter regulation. By filtering out the output voltage ripple inherent to dc-dc switching conversions, maximum system performance is ensured in sensitive instrumentation, test-and-measurement, audio, and RF applications.

For applications where positive and negative low-noise rails are required, consider TI’s TPS7A33 family of negative high-voltage, ultralow-noise linear regulators.

The TPS7A47 is a family of positive voltage (+36 V), ultralow-noise (4 µVRMS) low-dropout linear regulators (LDO) capable of sourcing a 1-A load.

The TPS7A4700 output voltages are user-programmable (up to 20.5 V) using a printed circuit board (PCB) layout without the need of external resistors or feed-forward capacitors, thus reducing overall component count.

The TPS7A4701 output voltage can be configured with a user-programmable PCB layout (up to 20.5 V), or adjustable (up to 34 V) with external feedback resistors.

The TPS7A47 is designed with bipolar technology primarily for high-accuracy, high-precision instrumentation applications where clean voltage rails are critical to maximize system performance. This feature makes the device ideal for powering operational amplifiers, analog-to-digital converters (ADCs), digital-to-analog converters (DACs), and other high-performance analog circuitry in critical applications such as medical, radio frequency (RF), and test-and-measurement.

In addition, the TPS7A47 is ideal for post dc-dc converter regulation. By filtering out the output voltage ripple inherent to dc-dc switching conversions, maximum system performance is ensured in sensitive instrumentation, test-and-measurement, audio, and RF applications.

For applications where positive and negative low-noise rails are required, consider TI’s TPS7A33 family of negative high-voltage, ultralow-noise linear regulators.

Download View video with transcript Video
Information

Check TI.com inventory for similar products

Products with similar specifications, sorted by available TI.com inventory.

View now

Similar products you might be interested in

open-in-new Compare alternates
Similar functionality to the compared device
TPS7A88 ACTIVE 1-A, low-noise, high-PSRR, dual-channel adjustable ultra-low-dropout voltage regulator A dual-channel, low noise, 1-A LDO.
TPS7A91 ACTIVE 1-A, low-noise, high-PSRR, adjustable ultra-low-dropout voltage regulator with high-accuracy A single-channel, low-noise, 1-A LDO.

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 16
Type Title Date
* Data sheet TPS7A470x 36-V, 1-A, 4-µVRMS, RF LDO Voltage Regulator datasheet (Rev. F) PDF | HTML 01 Oct 2014
White paper Parallel LDO Architecture Design Using Ballast Resistors PDF | HTML 14 Dec 2022
White paper Comprehensive Analysis and Universal Equations for Parallel LDO's Using Ballast PDF | HTML 13 Dec 2022
Application note LDO Noise Demystified (Rev. B) PDF | HTML 18 Aug 2020
Technical article Choosing buck converters and LDOs for miniature industrial automation equipment PDF | HTML 29 Jan 2020
Application note A Topical Index of TI LDO Application Notes (Rev. F) 27 Jun 2019
Technical article Designing a pre-tracking regulator, part 1: for a positive-output LDO PDF | HTML 18 Feb 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
Technical article Designing a power supply solution for pipeline ADCs – Part 1 PDF | HTML 03 Sep 2015
Technical article How to filter out noise in your DC/DC design PDF | HTML 18 Aug 2015
White paper How to measure LDO noise 24 Jul 2015
User guide TPS7A47xxEVM-094 Evaluation Module (Rev. A) 02 Aug 2013
Analog Design Journal 1Q 2013Issue Analog Applications Journal 22 Jan 2013
Analog Design Journal How to pick a linear regulator for noise-sensitive applications 22 Jan 2013
Application note ANY-OUT™ LDO Controlled by I2C™ IO Expander Device (Rev. A) 20 Sep 2012

Design & development

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

Evaluation board

ADC08200EVM — ADC08200 8-Bit 200MSPS Low-Power ADC With Internal Sample and Hold Evaluation Module

The ADC08200 evaluation module (EVM) is designed to evaluate the high-speed
CMOS-interface ADC08200. The ADC08200EVM provides simple and minimal external components to minimize system cost and power consumption.

User guide: PDF
Not available on TI.com
Evaluation board

ADC1173EVM — ADC1173 8-Bit 15MSPS Analog-to-Digital Converter (ADC) Evaluation Module

The ADC1173 evaluation module (EVM) is used to evaluate the ADC1173 8-bit, 15-MSPS analog-to-digital converter (ADC). The EVM has a single-ended, DC-coupled analog input to accommodate the ADC1173 full-scale sampling range. The ADC1173EVM is designed to connect directly to a variety of (...)

User guide: PDF
Not available on TI.com
Evaluation board

ADC128S102EVM — ADC128S102 evaluation module for 12-bit, eight-channel, SAR analog-to-digital converter (ADC)

The ADC128S102 evaluation module (EVM) is a platform for evaluating the operation and performance of the ADC128S102, a 12-bit, eight-channel, 1-MSPS, serial-interface, system activity report (SAR) analog-to-digital converter (ADC). The user can source an analog input and the user-friendly graphical (...)

User guide: PDF | HTML
Not available on TI.com
Evaluation board

ADC32RF82EVM — ADC32RF82 dual-channel, 14-bit, 2.45-GSPS, RF-sampling telecom receiver evaluation module

The ADC32RF82 evaluation module (EVM) demonstrates the performance of a dual, 2.45-GSPS, 14-bit analog-to-digital converter (ADC) with the JESD204B interface. The EVM includes the ADC32RF82 device, and JESD204B clocking is provided by the LMK04828 and TI voltage regulators to provide the (...)

User guide: PDF
Not available on TI.com
Evaluation board

ADS114S08EVM — ADS114S08 evaluation module

The ADS114S08 evaluation module (EVM) is a platform for evaluation of the ADS114S08 analog-to-digital converter (ADC). The ADS114S08 is a 16-bit, 4-kSPS, 12-channel, low-power delta-sigma ADC for sensor measurement and process control applications. The ADS114S08 also includes a highly-accurate (...)

User guide: PDF
Evaluation board

ADS122C04EVM — ADS122C04 evaluation module

The ADS122C04 evaluation module (EVM) is a platform for evaluating the ADS122C04 analog-to-digital converter (ADC). The ADS122C04 is a 24-bit, 2-kSPS, 4-channel, low-power delta-sigma ADC with an I2C interface for sensor measurement and process control applications. The ADS122C04 also includes an (...)

User guide: PDF
Evaluation board

ADS122U04EVM — ADS122U04 evaluation module

The ADS122U04 evaluation module (EVM) is a platform for evaluation of the ADS122U04 analog-to-digital converter (ADC). The ADS122U04 is a 24-bit, 2-kSPS, 4-channel, low-power delta-sigma ADC with a UART interface for sensor measurement and process control applications. The ADS122U04 also includes (...)

User guide: PDF
Evaluation board

ADS1235EVM — ADS1235 evaluation module

The ADS1235 evaluation module (EVM) is a platform for evaluating the ADS1235 analog-to-digital converter (ADC). ADS1235 is a low-drift, 24-bit, 7200-SPS, 6-channel delta-sigma (ΔΣ) ADC with an integrated PGA for low-noise bridge measurements. This sensor-ready ADC provides a (...)

User guide: PDF
Evaluation board

ADS1261EVM — ADS1261 evaluation module

The ADS1261 evaluation module (EVM) is a platform for evaluating the ADS1261 analog-to-digital converter (ADC). ADS1261 is a low-drift, 24-bit, 40-kSPS, 10-channel delta-sigma (ΔΣ) ADC with an integrated PGA, voltage reference, and internal fault monitors. This sensor-ready ADC provides (...)

User guide: PDF
Evaluation board

ADS8168EVM-PDK — ADS8168 8-channel 16-bit 1MSPS SAR ADC evaluation module performance demonstration kit (PDK)

The ADS8168 evaluation module (EVM) performance demonstration kit (PDK) is a platform for evaluating the performance of the ADS8168 successive-approximation register (SAR) analog-to-digital converter (ADC). The ADS8168EVM-PDK includes the ADS8168EVM board, the precision host interface (PHI) (...)

User guide: PDF
Not available on TI.com
Evaluation board

ADS8332EVMV2-PDK — ADS8332 16-Bit 500kSPS Low-Power Serial ADC Evaluation Module Performance Demonstration Kit (PDK)

The ADS8332 evaluation module (EVM) performance demonstration kit (PDK) is a platform for evaluating the performance of the ADS8332 successive-approximation register (SAR) analog-to-digital converter (ADC). ADS8332EVMV2-PDK includes the ADS8332EVMV2 board, the precision host interface (PHI) (...)

User guide: PDF | HTML
Not available on TI.com
Evaluation board

ADS8686SEVM-PDK — ADS8686S 16-channel 16-bit 1-MSPS dual simultaneous-sampling ADC performance demonstration kit (PDK)

The ADS8686S evaluation module (EVM) performance demonstration kit (PDK) is a platform for evaluating the ADS8686S dual simultaneous-sampling analog-to-digital converter (ADC) with an integrated analog front end (AFE).

ADS8686SEVM-PDK includes the ADS8686SEVM board and a precision host interface (...)

User guide: PDF
Not available on TI.com
Evaluation board

ADS9120EVM-PDK — ADS9120 16-Bit, 2.5MSPS, 15.5mW SAR ADC EVM Performance Demonstration Kit (PDK)

The ADS9120 evaluation module (EVM) performance demonstration kit (PDK) is a platform for evaluating the performance of the ADS9120 successive-approximation register analog-to-digital converter (SAR ADC). The ADS9120EVM-PDK includes the ADS9120 EVM board, the PHI controller board, and accompanying (...)

User guide: PDF
Not available on TI.com
Evaluation board

ADS9224REVM-PDK — ADS9224R dual-channel simultaneous-sampling SAR ADC performance demonstration kit (PDK)

The ADS9224R evaluation module (EVM) performance demonstration kit (PDK) is a platform for evaluating the performance of the ADS9224R successive-approximation register (SAR) analog-to-digital converter (ADC), which is a fully-differential input, 16-bit, 3-MSPS device. ADS9224REVM-PDK (...)

User guide: PDF
Not available on TI.com
Evaluation board

DDC2256AEVM — DDC2256A 256-Channel Current-Input Analog-to-Digital Converter Evaluation Module

The DDC2256AEVM evaluation module  (EVM)  is  an  evaluation  kit  for the DDC2256A,  a  256-channel,  current  input,  24-bit analog-to-digital (A/D) converter. The EVM kit, comprised of a DUT board and a capture board, contains two DDC2256A (...)

User guide: PDF
Evaluation board

PLABS-SAR-EVM-PDK — TI Precision Labs SAR ADC Evaluation Module Performance Demonstration Kit (PDK)

PLABS-SAR-EVM-PDK is an experimental platform used in conjunction with TI Precision Labs videos to gain a deeper understanding of successive approximation register (SAR) analog-to-digital converter (ADC) circuits. The evaluation module (EVM) platform contains two channels for common SAR (...)

User guide: PDF
Not available on TI.com
Evaluation board

TPS7A4701EVM-094 — TPS7A4701 RF low-dropout (LDO) voltage regulator evaluation module

The TPS7A4701EVM-094 is a fully assembled and tested evaluation module (EVM) for evaluating the TPS7A47 ultra-low-noise low-dropout (LDO) regulator at adjustable output voltages that range from 1.4 V to 34 V. The EVM circuit is configured to be a reference design for engineering applications (...)
User guide: PDF
Not available on TI.com
Evaluation board

TSW40RF80EVM — 2T2R RF-Sampling Transceiver w/ Dual 14-Bit 3GSPS ADC/9GSPS DAC Clocking Solution Evaluation Module

The TSW40RF80 evaluation module (EVM) is a two-transmit two-receive (2T2R) RF-sampling transceiver reference design. The module contains the DAC38RF80 dual-channel RF-sampling digital-to-analog converter (DAC) and the ADC32RF45 dual-channel RF-sampling analog-to-digital converter (ADC).

The (...)

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

TPS7A4700 PSpice Transient Model (Rev. A)

SBVM190A.ZIP (40 KB) - PSpice Model
Simulation model

TPS7A4700 TINA-TI Transient Reference Design

SBVM302.TSC (776 KB) - TINA-TI Reference Design
Simulation model

TPS7A4700 TINA-TI Transient Spice Model

SBVM303.ZIP (10 KB) - TINA-TI Spice Model
Simulation model

TPS7A4700 Unencrypted PSpice Model

SBVM663.ZIP (1 KB) - PSpice Model
Simulation model

TPS7A4700 Unencrypted PSpice Transient Model

SBVM939.ZIP (2 KB) - PSpice Model
Simulation model

TPS7A4701 PSpice Transient Model (Rev. A)

SBVM364A.ZIP (40 KB) - PSpice Model
Simulation model

TPS7A4701 TINA-TI Transient Reference Design

SBVM401.ZIP (15 KB) - TINA-TI Reference Design
Simulation model

TPS7A4701 TINA-TI Transient Spice Model

SBVM402.ZIP (9 KB) - TINA-TI Spice Model
Simulation model

TPS7A4701 Unencrypted PSpice Transient Model (Rev. A)

SBVM621A.ZIP (2 KB) - PSpice Model
Calculation tool

PARALLEL-LDO-CALC Parallel low-dropout (LDO) calculator

The parallel low-dropout (LDO) calculator is a Microsoft® Excel®-based tool that provides worst-case analysis for parallel LDO regulators using ballast resistors. The tool helps the user identify the minimum number of parallel LDO regulators required and optimum ballast resistance for a (...)

Supported products & hardware

Supported products & hardware

Products
Linear & low-dropout (LDO) regulators
TPS7A33 1-A, high-PSRR, negative, adjustable low-dropout voltage regulator with enable TPS7A47 1-A, 36-V, low-noise, high-PSRR, low-dropout voltage regulator with enable TPS7A47-Q1 Automotive 1-A, 36-V, low-noise, high-PSRR, low-dropout voltage regulator with enable TPS7A4701-EP Enhanced product, 36-V, 1-A, 4-μVRMS, RF LDO voltage regular TPS7A52 2-A, low-VIN (1.1-V), low-noise, high-accuracy, ultra-low-dropout (LDO) voltage regulator TPS7A52-Q1 Automotive 2-A, low-VIN (1.1-V), low-noise, high-accuracy, ultra-low-dropout (LDO) voltage regulator TPS7A53 3-A, low-VIN (1.1 V) low-noise high-accuracy ultra-low-dropout (LDO) voltage regulator TPS7A53-Q1 Automotive, 3-A, low-VIN (1.1 V) low-noise high-accuracy ultra-low-dropout (LDO) voltage regulator TPS7A53A-Q1 Automotive, 3-A, low-VIN 5.6-µVRMS low-noise high-accuracy ultra-low dropout voltage regulator TPS7A53B 3-A, 1.1-V, low-VIN, low-noise high-accuracy ultra-low-dropout voltage regulator with 0.5-V low VREF TPS7A54 4-A, low-VIN (1.1-V), low-noise, high-accuracy, ultra-low-dropout (LDO) voltage regulator TPS7A54-Q1 Automotive 4-A, low-VIN (1.1-V), low-noise, high-accuracy, ultra-low-dropout (LDO) voltage regulator TPS7A57 5-A, low-input-voltage, low-noise, high-accuracy low-dropout (LDO) voltage regulator TPS7A83A 2-A, low-VIN (1.1-V), low-noise, high-accuracy, ultra-low-dropout voltage regulator with power good TPS7A84A 3-A, low-VIN (1.1-V), low-noise, high-accuracy, ultra-low-dropout voltage regulator with power good TPS7A85A 4-A, low-VIN (1.1-V), low-noise, high-accuracy, ultra-low-dropout voltage regulator with power good TPS7A94 1-A, ultra-low noise, ultra-high PSRR, RF voltage regulator TPS7B7702-Q1 Automotive 300-mA, off-battery (40-V), dual-channel adjustable antenna low-dropout voltage regulator TPS7A8300 2-A, low-VIN, low-2-A, low-VIN, low-noise, ultra-low-dropout voltage regulator with power good wi TPS7A84 3-A, low-VIN, low-noise, ultra-low-dropout voltage regulator with power good with high-accuracy TPS7A85 4-A, low-VIN, low-noise, ultra-low-dropout voltage regulator with power good with high-accuracy TPS7A96 2-A, ultra-low noise ultra-high PSRR RF voltage regulator TPS7A4501-SP Radiation-hardened, QMLV, 1.5-V to 20-V input 1.5-A low-dropout (LDO) regulator TPS7H1111-SP Radiation-hardened, QMLV and QMLP, 1.5A ultra-low-noise high-PSRR low-dropout (LDO) regulator TPS7H1111-SEP Radiation-tolerant, 1.5A, ultra-low-noise ultra-high-PSRR RF LDO regulator
Hardware development
Evaluation board
TPS7A57EVM-081 TPS7A57 evaluation module for 5-A low-noise high-accuracy low-dropout (LDO) voltage regulator

Many TI reference designs include the TPS7A47

Use our reference design selection tool to review and identify designs that best match your application and parameters.

Package Pins Download
VQFN (RGW) 20 View options

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
Information included:
  • Fab location
  • Assembly location

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos