TPS7A90

ACTIVE

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

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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.
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.

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 (µVrms) 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 at 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 (µVrms) 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 at 100 KHz (dB) 48 Dropout voltage (Vdo) (typ) (mV) 75 Operating temperature range (°C) -40 to 125
WSON (DSK) 10 6.25 mm² 2.5 x 2.5
  • 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

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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Type Title Date
* Data sheet TPS7A90 500-mA, High-Accuracy, Low-Noise LDO Voltage Regulator datasheet (Rev. A) PDF | HTML 29 Jun 2020
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 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
EVM User's guide TPS7A91EVM-831 Evaluation Module User's Guide 29 Nov 2016

Design & development

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Simulation model

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Reference designs

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