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TPS7A90

ACTIVE

500-mA, low-noise, high-PSRR, adjustable ultra-low-dropout voltage regulator with high-accuracy

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Data sheet

TPS7A90

ACTIVE
Data sheet Order now

Product details

Output options Adjustable Output Iout (Max) (A) 0.5 Vin (Max) (V) 6.5 Vin (Min) (V) 1.4 Vout (Max) (V) 5.7 Vout (Min) (V) 0.8 Noise (uVrms) 4.7 Iq (Typ) (mA) 2.1 Thermal resistance θJA (°C/W) 57 Rating Catalog Load capacitance (Min) (µF) 22 Regulated outputs (#) 1 Features Enable, Foldback Overcurrent Protection, Output Discharge, Power Good, Soft Start Accuracy (%) 1 PSRR @ 100 KHz (dB) 48 Dropout voltage (Vdo) (Typ) (mV) 75 Operating temperature range (C) -40 to 125
Output options Adjustable Output Iout (Max) (A) 0.5 Vin (Max) (V) 6.5 Vin (Min) (V) 1.4 Vout (Max) (V) 5.7 Vout (Min) (V) 0.8 Noise (uVrms) 4.7 Iq (Typ) (mA) 2.1 Thermal resistance θJA (°C/W) 57 Rating Catalog Load capacitance (Min) (µF) 22 Regulated outputs (#) 1 Features Enable, Foldback Overcurrent Protection, Output Discharge, Power Good, Soft Start Accuracy (%) 1 PSRR @ 100 KHz (dB) 48 Dropout voltage (Vdo) (Typ) (mV) 75 Operating temperature range (C) -40 to 125
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WSON (DSK) 10 6 mm² 2.5 x 2.5
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  • 1.0% accuracy over line, load, and temperature
  • Low output noise: 4.7 µVRMS (10 Hz–100 kHz)
  • Low dropout: 100 mV (max) at 0.5 A
  • Wide input voltage range: 1.4 V to 6.5 V
  • Wide output voltage range: 0.8 V to 5.7 V
  • High power-supply rejection ratio (PSRR):
    • 60 dB at DC
    • 50 dB at 100 kHz
    • 30 dB at 1 MHz
  • Fast transient response
  • Adjustable start-up in-rush control with selectable soft-start charging current
  • Open-drain power-good (PG) output
  • RθJC = 3.2ºC/W
  • 2.5-mm × 2.5-mm, 10-pin WSON package
  • 1.0% accuracy over line, load, and temperature
  • Low output noise: 4.7 µVRMS (10 Hz–100 kHz)
  • Low dropout: 100 mV (max) at 0.5 A
  • Wide input voltage range: 1.4 V to 6.5 V
  • Wide output voltage range: 0.8 V to 5.7 V
  • High power-supply rejection ratio (PSRR):
    • 60 dB at DC
    • 50 dB at 100 kHz
    • 30 dB at 1 MHz
  • Fast transient response
  • Adjustable start-up in-rush control with selectable soft-start charging current
  • Open-drain power-good (PG) output
  • RθJC = 3.2ºC/W
  • 2.5-mm × 2.5-mm, 10-pin WSON package
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The TPS7A90 is a low-noise (4.7 µVRMS), low-dropout (LDO) voltage regulator capable of sourcing 500 mA with only 100 mV of maximum dropout to 5 V and 200 mV to 5.7 V.

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

With 1% output voltage accuracy (over line, load, and temperature) and soft-start capabilities to reduce in-rush current, the TPS7A90 is ideal 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 those found in high-speed communication, video, medical, or test and measurement applications. The very low 4.7-µVRMS output noise and wideband PSRR (30 dB at 1 MHz) minimizes phase noise and clock jitter. These features maximize performance of clocking devices, ADCs, and DACs.

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

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

With 1% output voltage accuracy (over line, load, and temperature) and soft-start capabilities to reduce in-rush current, the TPS7A90 is ideal 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 those found in high-speed communication, video, medical, or test and measurement applications. The very low 4.7-µVRMS output noise and wideband PSRR (30 dB at 1 MHz) minimizes phase noise and clock jitter. These features maximize performance of clocking devices, ADCs, and DACs.





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Technical documentation

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Type Title Date
* Data sheet TPS7A90 500-mA, High-Accuracy, Low-Noise LDO Voltage Regulator datasheet (Rev. A) 29 Jun 2020
Technical article 3 quiescent-current (Iq) specifications you need to understand 12 Nov 2021
Application note High-Performance CMOS Image Sensor Power Supply in Industrial Camera and Vision (Rev. A) 30 Jul 2021
Selection guide Low Dropout Regulators Quick Reference Guide (Rev. P) 21 Mar 2018
User guide TPS7A91EVM-831 Evaluation Module User's Guide 29 Nov 2016

Design & development

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Evaluation board

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The ADC3541 evaluation module (EVM) is a platform that demonstrates the performance of the ultra-low-power, high-linearity ADC3541 product. Onboard voltage regulation and flexible analog input options allow for easy evaluation for many different applications.

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The ADC3643 evaluation module (EVM) demonstrates the performance of the ADC3643, which is an ultra-low-power, high-linearity, analog-to-digital converter (ADC). Onboard voltage regulation and flexible analog input options allow easy evaluation for many different applications.

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The ADC3660 evaluation module (EVM) demonstrates the performance of the ADC3660, which is an ultra-low-power, high-linearity, analog-to-digital converter (ADC). Onboard voltage regulation and flexible analog input options allow easy evaluation for many different applications.

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Evaluation board

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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 (...)
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Simulation model

TPS7A9001 PSpice Transient Model

SBVM709.ZIP (92 KB) - PSpice Model
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TPS7A9001 Unencrypted PSpice Transient Model

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Reference designs

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Reference designs

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Reference designs

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 (...)
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