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

TPS7A90

ACTIVE
Order now
Data sheet

TPS7A90

ACTIVE
Data sheet Order now

Product details

Rating Catalog Vin (max) (V) 6.5 Vin (min) (V) 1.4 Iout (max) (A) 0.5 Output options Adjustable Output Vout (max) (V) 5.7 Vout (min) (V) 0.8 Noise (µVrms) 4.7 PSRR at 100 KHz (dB) 48 Iq (typ) (mA) 2.1 Features Enable, Foldback Overcurrent protection, Output discharge, Power good, Soft start Thermal resistance θJA (°C/W) 57 Load capacitance (min) (µF) 22 Regulated outputs (#) 1 Accuracy (%) 1 Dropout voltage (Vdo) (typ) (mV) 75 Operating temperature range (°C) -40 to 125
Rating Catalog Vin (max) (V) 6.5 Vin (min) (V) 1.4 Iout (max) (A) 0.5 Output options Adjustable Output Vout (max) (V) 5.7 Vout (min) (V) 0.8 Noise (µVrms) 4.7 PSRR at 100 KHz (dB) 48 Iq (typ) (mA) 2.1 Features Enable, Foldback Overcurrent protection, Output discharge, Power good, Soft start Thermal resistance θJA (°C/W) 57 Load capacitance (min) (µF) 22 Regulated outputs (#) 1 Accuracy (%) 1 Dropout voltage (Vdo) (typ) (mV) 75 Operating temperature range (°C) -40 to 125
WSON (DSK) 10 6.25 mm² (2.5 mm × 2.5 mm)
  • 1.0% accuracy over line, load, and temperature
  • Low output noise: 4.7µVRMS (10Hz – 100kHz)
  • Low dropout: 100mV (maximum) at 0.5A
  • Wide input voltage range: 1.4V to 6.5V
  • Wide output voltage range: 0.8V to 5.7V
  • High power-supply rejection ratio (PSRR):
    • 60dB at DC
    • 50dB at 100kHz
    • 30dB at 1MHz
  • Fast transient response
  • Adjustable start-up in-rush control with selectable soft-start charging current
  • Open-drain power-good (PG) output
  • RθJC = 3.2°C/W
  • 2.5mm × 2.5mm, 10-pin WSON package
  • 1.0% accuracy over line, load, and temperature
  • Low output noise: 4.7µVRMS (10Hz – 100kHz)
  • Low dropout: 100mV (maximum) at 0.5A
  • Wide input voltage range: 1.4V to 6.5V
  • Wide output voltage range: 0.8V to 5.7V
  • High power-supply rejection ratio (PSRR):
    • 60dB at DC
    • 50dB at 100kHz
    • 30dB at 1MHz
  • Fast transient response
  • Adjustable start-up in-rush control with selectable soft-start charging current
  • Open-drain power-good (PG) output
  • RθJC = 3.2°C/W
  • 2.5mm × 2.5mm, 10-pin WSON package

The TPS7A90 is a low-noise (4.7µVRMS), low-dropout (LDO) voltage regulator capable of sourcing 500mA with only 100mV of maximum dropout to 5V and from 200mV to 5.7V.

The TPS7A90 output is adjustable with external resistors from 0.8V to 5.7V. The TPS7A90 wide input voltage range supports operation as low as 1.4V and up to 6.5V.

With 1% output voltage accuracy (over line, load, and temperature) and soft-start capabilities to reduce in-rush current, the TPS7A90 is designed for powering sensitive analog low-voltage devices (such as voltage-controlled oscillators (VCOs), analog-to-digital converters (ADCs), and digital-to-analog converters [DACs]).

The TPS7A90 is designed to power noise-sensitive components such as components found in high-speed communication, video, medical, or test and measurement applications. The very low 4.7µVRMS output noise and wideband PSRR (30dB at 1MHz) minimizes phase noise and clock jitter. These features maximize performance of clocking devices, ADCs, and DACs.

The TPS7A90 is a low-noise (4.7µVRMS), low-dropout (LDO) voltage regulator capable of sourcing 500mA with only 100mV of maximum dropout to 5V and from 200mV to 5.7V.

The TPS7A90 output is adjustable with external resistors from 0.8V to 5.7V. The TPS7A90 wide input voltage range supports operation as low as 1.4V and up to 6.5V.

With 1% output voltage accuracy (over line, load, and temperature) and soft-start capabilities to reduce in-rush current, the TPS7A90 is designed for powering sensitive analog low-voltage devices (such as voltage-controlled oscillators (VCOs), analog-to-digital converters (ADCs), and digital-to-analog converters [DACs]).

The TPS7A90 is designed to power noise-sensitive components such as components found in high-speed communication, video, medical, or test and measurement applications. The very low 4.7µVRMS output noise and wideband PSRR (30dB at 1MHz) minimizes phase noise and clock jitter. These features maximize performance of clocking devices, ADCs, and DACs.
filter Find other Linear & low-dropout (LDO) regulators
Download View video with transcript Video

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
Same functionality with different pin-out to the compared device.
TPS745 ACTIVE 500-mA, low-IQ, high-accuracy, adjustable ultra-low-dropout voltage regulator with power good Adjustable output LDO with lower IQ and power good for cost-sensitive applications.
TLV758P ACTIVE 500-mA, low-IQ, high-accuracy, adjustable ultra-low-dropout voltage regulator with enable Adjustable output LDO with lower IQ for cost-sensitive applications.

Technical documentation

No results found. Please clear your search and try again.
View all 6
Top documentation Type Title Format options Date
* Data sheet TPS7A90 500mA, High-Accuracy, Low-Noise LDO Voltage Regulator datasheet (Rev. B) PDF | HTML Sep 23, 2026
White paper Reduce System Noise Using Parallel LDOs PDF | HTML Nov 3, 2025
White paper Parallel LDO Architecture Design Using Ballast Resistors PDF | HTML Dec 14, 2022
White paper Comprehensive Analysis and Universal Equations for Parallel LDO's Using Ballast PDF | HTML Dec 13, 2022
Application note High-Performance CMOS Image Sensor Power Supply in Industrial Camera and Vision (Rev. A) Jul 30, 2021
Selection guide Low Dropout Regulators Quick Reference Guide (Rev. P) Mar 21, 2018

Design & development

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

Evaluation board

ADC3541EVM — ADC3541 evaluation module for single-channel, low-noise, ultra-low-power and low-latency ADC

The ADC3541 evaluation module (EVM) is designed to evaluate the ADC3541 family of high-speed analog-to-digital converters (ADCs). The EVM is populated with the ADC3541, a 14-bit, single-channel 10MSPS ADC with CMOS interface.
User guide: PDF | HTML
Supported products & hardware
In stock
Limit:
??asset.out-of-stock-ti_en_US??
Not available
Evaluation board

ADC3642EVM — ADC3642 evaluation module for dual-channel, 14-bit, 25-MSPS, low-noise, ultra-low-power ADC

The ADC3642 evaluation module (EVM) is designed to evaluate the ADC3642 family of high-speed analog-to-digital converters (ADCs). The EVM is populated with the ADC3642, a 14-bit, dual-channel 25MSPS ADC with serial LVDS interface and allows for evaluation of up to 25MSPS and single or dual channel (...)
User guide: PDF | HTML
Supported products & hardware
In stock
Limit:
??asset.out-of-stock-ti_en_US??
Not available
Evaluation board

ADC3643EVM — ADC3643 evaluation module for dual-channel, 14-bit, 65MSPS, low-noise, ultra-low-power ADC

The ADC3643 evaluation module (EVM) is designed to evaluate the ADC3643 family of high-speed analog-to-digital converters (ADCs). The EVM is populated with the ADC3643, a 14-bit, dual-channel 65MSPS ADC with CMOS interface and allows for evaluation of up to 65MSPS and single or dual channel (...)
User guide: PDF | HTML
Supported products & hardware
In stock
Limit:
??asset.out-of-stock-ti_en_US??
Not available
Evaluation board

ADC3644EVM — ADC3644 evaluation module for dual-channel, 14-bit, 125MSPS, low-noise, ultra-low-power ADC

The ADC3644 evaluation module (EVM) is designed to evaluate the ADC3644 family of high-speed analog-to-digital converters (ADCs). The EVM is populated with the ADC3644, a 14-bit, dual-channel 125MSPS ADC with CMOS interface and allows for evaluation of single or dual channel devices available in (...)
User guide: PDF | HTML
Supported products & hardware
In stock
Limit:
??asset.out-of-stock-ti_en_US??
Not available
Evaluation board

ADC3660EVM — ADC3660 dual, 16-bit, 0.5MSPS to 65MSPS, low-noise, ultra-low-power ADC evaluation module

The ADC3660 evaluation module (EVM) is designed to evaluate the ADC3660 high-speed analog-to-digital converter (ADC). The EVM is populated with the ADC3660, a 16-bit, dual-channel ADC with CMOS interface that can operate up to 65MSPS.
User guide: PDF | HTML
Supported products & hardware
In stock
Limit:
??asset.out-of-stock-ti_en_US??
Not available
Evaluation board

TPS7A91EVM-831 — TPS7A91 1A Low-Noise Low-Vin Low-Dropout (LDO) Regulator for Analog Evaluation Module

The TPS7A91EVM-831 evaluation module is designed for a typical configuration to evaluate the operation and performance of the TPS7A91, 1A high-accuracy, low dropout voltage regulator. The EVM circuit board is configured to be a reference design for engineering applications requiring current to a (...)
User guide: PDF
Supported products & hardware
In stock
Limit:
??asset.out-of-stock-ti_en_US??
Not available
Simulation model

TPS7A9001 PSpice Transient Model

SBVM709.ZIP (92 KB) - PSpice model
Supported products & hardware
Simulation model

TPS7A9001 Unencrypted PSpice Transient Model

SBVM710.ZIP (2 KB) - PSpice model
Supported products & hardware
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
Reference design

TIDA-010131 — Multichannel RF transceiver clocking reference design for RADARs and wireless 5G testers

Analog front end for high-speed end equipments like phased-array radars, wireless communication testers, and electronic warfare require synchronized, multipletransceiver signal chains. Each transceiver signal chain includes high-speed, analog-to-digital converters (ADCs), digital-to-analog (...)
Supported products & hardware
Reference design

TIDA-01023 — High Channel Count JESD204B Clock Generation Reference Design for RADAR and 5G Wireless Testers

High-speed multi-channel applications require low noise and scalable clocking solutions capable of precise channel-to-channel skew adjustment to achieve optimal system SNR, SFDR, and ENOB. This reference design supports high channel count JESD204B synchronized clocks using one master and multiple (...)
Supported products & hardware
Reference design

TIDA-01024 — High Channel Count JESD204B Daisy Chain Clock Reference Design for RADAR and 5G Wireless Testers

High-speed multi-channel applications require low noise and scalable clocking solutions capable of precise channel-to-channel skew adjustment to achieve optimal system SNR, SFDR, and ENOB. This reference design supports scaling up JESD204B synchronized clocks in daisy chain configuration. This (...)
Supported products & hardware
Package Pins CAD symbols, footprints & 3D models
WSON (DSK) 10 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

Ordering & quality

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

View all forum topics

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