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Linear & low-dropout (LDO) regulators

TPS7A57

ACTIVE

5-A, low-input-voltage, low-noise, high-accuracy low-dropout (LDO) voltage regulator

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Data sheet

TPS7A57

ACTIVE
Data sheet Order now

Product details

Output options Adjustable Output Iout (max) (A) 5 Vin (max) (V) 6 Vin (min) (V) 0.7 Vout (max) (V) 5.2 Vout (min) (V) 0.5 Noise (µVrms) 2.1 Iq (typ) (mA) 5 Thermal resistance θJA (°C/W) 40.3 Rating Catalog Load capacitance (min) (µF) 15 Regulated outputs (#) 1 Features Adjustable current limit, Enable, Foldback Overcurrent protection, Output discharge, Power good, Soft start Accuracy (%) 1 PSRR at 100 KHz (dB) 60 Dropout voltage (Vdo) (typ) (mV) 75 Operating temperature range (°C) -40 to 125
Output options Adjustable Output Iout (max) (A) 5 Vin (max) (V) 6 Vin (min) (V) 0.7 Vout (max) (V) 5.2 Vout (min) (V) 0.5 Noise (µVrms) 2.1 Iq (typ) (mA) 5 Thermal resistance θJA (°C/W) 40.3 Rating Catalog Load capacitance (min) (µF) 15 Regulated outputs (#) 1 Features Adjustable current limit, Enable, Foldback Overcurrent protection, Output discharge, Power good, Soft start Accuracy (%) 1 PSRR at 100 KHz (dB) 60 Dropout voltage (Vdo) (typ) (mV) 75 Operating temperature range (°C) -40 to 125
WQFN (RTE) 16 9 mm² 3 x 3
  • Input voltage range:
    • Without BIAS: 1.1 V to 6.0 V
    • With BIAS: 0.7 V to 6.0 V
  • Output voltage noise: 2.45 µVRMS
  • 1% (max) accuracy over line, load, and temperature
  • Low dropout: 75 mV at 5 A
  • Power-supply rejection ratio (5 A):
    • 100 dB at 1 kHz
    • 78 dB at 10 kHz
    • 60 dB at 100 kHz
    • 36 dB at 1 MHz
  • Superior load transient response:
    • ±2 mV with a 100-mA to 5-A load step
  • Adjustable output voltage range: 0.5 V to 5.2 V
  • Adjustable soft-start inrush control
  • BIAS rail:
    • Internal charge pump or 3-V to 11-V external rail
    • Internal charge pump can be disabled
  • Open-drain, power-good (PG) output
  • Package: 3-mm × 3-mm, 16-pin WQFN
    • EVM RθJA: 21.9°C/W
  • Input voltage range:
    • Without BIAS: 1.1 V to 6.0 V
    • With BIAS: 0.7 V to 6.0 V
  • Output voltage noise: 2.45 µVRMS
  • 1% (max) accuracy over line, load, and temperature
  • Low dropout: 75 mV at 5 A
  • Power-supply rejection ratio (5 A):
    • 100 dB at 1 kHz
    • 78 dB at 10 kHz
    • 60 dB at 100 kHz
    • 36 dB at 1 MHz
  • Superior load transient response:
    • ±2 mV with a 100-mA to 5-A load step
  • Adjustable output voltage range: 0.5 V to 5.2 V
  • Adjustable soft-start inrush control
  • BIAS rail:
    • Internal charge pump or 3-V to 11-V external rail
    • Internal charge pump can be disabled
  • Open-drain, power-good (PG) output
  • Package: 3-mm × 3-mm, 16-pin WQFN
    • EVM RθJA: 21.9°C/W

The TPS7A57 is a low-noise (2.45 µVRMS), ultra-low-dropout linear regulator (LDO) capable of sourcing 5 A with only 75 mV of dropout, independently of the output voltage. The device output voltage is adjustable from 0.5 V to 5.2 V using a single external resistor. The combination of low noise, high PSRR (36 dB at 1 MHz), and high output-current capability makes the TPS7A57 designed for powering noise-sensitive components (such as RF amplifiers, radar sensors, SERDES and analog chipsets) found in radar power, communication, and imaging applications.

Digital loads [such as application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), and digital signal processors (DSPs)] requiring low-input, low-output (LILO) voltage operation also benefit from the exceptional accuracy (1% over load, line, and temperature), remote sensing, excellent transient performance, and soft-start capabilities to provide optimal system performance. The versatility, performance, and small footprint solution make this LDO an excellent choice for high-current analog loads such as analog-to-digital converters (ADCs), digital-to-analog converters (DACs), and imaging sensors as well as digital loads such as serializer/deserializers (SerDes), FPGAs, and DSPs.

The TPS7A57 is a low-noise (2.45 µVRMS), ultra-low-dropout linear regulator (LDO) capable of sourcing 5 A with only 75 mV of dropout, independently of the output voltage. The device output voltage is adjustable from 0.5 V to 5.2 V using a single external resistor. The combination of low noise, high PSRR (36 dB at 1 MHz), and high output-current capability makes the TPS7A57 designed for powering noise-sensitive components (such as RF amplifiers, radar sensors, SERDES and analog chipsets) found in radar power, communication, and imaging applications.

Digital loads [such as application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), and digital signal processors (DSPs)] requiring low-input, low-output (LILO) voltage operation also benefit from the exceptional accuracy (1% over load, line, and temperature), remote sensing, excellent transient performance, and soft-start capabilities to provide optimal system performance. The versatility, performance, and small footprint solution make this LDO an excellent choice for high-current analog loads such as analog-to-digital converters (ADCs), digital-to-analog converters (DACs), and imaging sensors as well as digital loads such as serializer/deserializers (SerDes), FPGAs, and DSPs.
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* Data sheet TPS7A57 5-A, Low-VIN (0.7 V), Low-Noise (2.1 μVRMS), High-Accuracy (1%), Ultra-Low Dropout (LDO) Voltage Regulator datasheet PDF | HTML 14 Jul 2022
Circuit design Voltage Margining and Scaling Circuit with a Voltage Output Smart DAC (Rev. A) PDF | HTML 17 Apr 2024
Circuit design Voltage Margining and Scaling Circuit With Current Output Smart DAC (Rev. A) PDF | HTML 16 Apr 2024
Certificate TPS7A57EVM-081 EU RoHS Declaration of Conformity (DoC) 09 Jan 2023
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

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