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TPS7A56

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6A, low-input-voltage, low-noise, high-accuracy low-dropout (LDO) voltage regulator

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Data sheet

TPS7A56

ACTIVE
Data sheet Order now

Product details

Output options Adjustable Output Iout (max) (A) 6 Vin (max) (V) 6 Vin (min) (V) 0.7 Vout (max) (V) 5.2 Vout (min) (V) 0.5 Rating Catalog Noise (µVrms) 2.45 PSRR at 100 KHz (dB) 60 Iq (typ) (mA) 5 Thermal resistance θJA (°C/W) 40.3 Load capacitance (min) (µF) 15 Regulated outputs (#) 1 Features Adjustable current limit, Enable, Foldback Overcurrent protection, Output discharge, Power good, Soft start, Thermal shutdown Accuracy (%) 1 Dropout voltage (Vdo) (typ) (mV) 90 Operating temperature range (°C) -40 to 125
Output options Adjustable Output Iout (max) (A) 6 Vin (max) (V) 6 Vin (min) (V) 0.7 Vout (max) (V) 5.2 Vout (min) (V) 0.5 Rating Catalog Noise (µVrms) 2.45 PSRR at 100 KHz (dB) 60 Iq (typ) (mA) 5 Thermal resistance θJA (°C/W) 40.3 Load capacitance (min) (µF) 15 Regulated outputs (#) 1 Features Adjustable current limit, Enable, Foldback Overcurrent protection, Output discharge, Power good, Soft start, Thermal shutdown Accuracy (%) 1 Dropout voltage (Vdo) (typ) (mV) 90 Operating temperature range (°C) -40 to 125
WQFN (RTE) 16 9 mm² 3 x 3
  • Input voltage range:
    • Without BIAS: 1.1V to 6.0V
    • With BIAS: 0.7V to 6.0V
  • Output voltage noise: 2.45µVRMS
  • 1% (max) accuracy over line, load, and temperature
  • Low dropout: 90mV at 6A
  • Power-supply rejection ratio (6A):
    • 100dB at 1kHz
    • 78dB at 10kHz
    • 60dB at 100kHz
    • 36dB at 1MHz
  • Load transient response:
    • ±3mV with a 100mA to 6A load step
  • Adjustable output voltage range: 0.5V to 5.0V
  • Adjustable soft-start inrush control
  • BIAS rail:
    • Internal charge pump or 3V to 11V external rail
    • Internal charge pump is able to be disabled
  • Open-drain, power-good (PG) output
  • Package:
    • 3mm × 3mm, 16-pin WQFN
    • EVM RθJA: 21.9°C/W
  • Input voltage range:
    • Without BIAS: 1.1V to 6.0V
    • With BIAS: 0.7V to 6.0V
  • Output voltage noise: 2.45µVRMS
  • 1% (max) accuracy over line, load, and temperature
  • Low dropout: 90mV at 6A
  • Power-supply rejection ratio (6A):
    • 100dB at 1kHz
    • 78dB at 10kHz
    • 60dB at 100kHz
    • 36dB at 1MHz
  • Load transient response:
    • ±3mV with a 100mA to 6A load step
  • Adjustable output voltage range: 0.5V to 5.0V
  • Adjustable soft-start inrush control
  • BIAS rail:
    • Internal charge pump or 3V to 11V external rail
    • Internal charge pump is able to be disabled
  • Open-drain, power-good (PG) output
  • Package:
    • 3mm × 3mm, 16-pin WQFN
    • EVM RθJA: 21.9°C/W

The TPS7A56 is a low-noise (2.45µVRMS), ultra-low-dropout linear regulator (LDO) capable of sourcing 6A with only 90mV of dropout, independently of the output voltage. The device output voltage is adjustable from 0.5V to 5V using a single external resistor. The combination of low noise, high PSRR (36dB at 1MHz), and high output-current capability makes the TPS7A56 designed for powering noise-sensitive components. These components (such as RF amplifiers, radar sensors, SERDES, and analog chipsets) are found in radar power, communication, and imaging applications.

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

The TPS7A56 is a low-noise (2.45µVRMS), ultra-low-dropout linear regulator (LDO) capable of sourcing 6A with only 90mV of dropout, independently of the output voltage. The device output voltage is adjustable from 0.5V to 5V using a single external resistor. The combination of low noise, high PSRR (36dB at 1MHz), and high output-current capability makes the TPS7A56 designed for powering noise-sensitive components. These components (such as RF amplifiers, radar sensors, SERDES, and analog chipsets) are found in radar power, communication, and imaging applications.

Digital loads requiring low-input, low-output (LILO) voltage operation also benefit from exceptional accuracy, remote sensing, transient performance, and soft-start capabilities to provide best system performance. These loads include application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), and digital signal processors (DSPs). The versatility, performance, and small footprint make this LDO an excellent choice for high-current analog loadsand digital loads such as serializer/deserializers (SerDes), FPGAs, and DSPs. High-current analog loads include analog-to-digital converters (ADCs), digital-to-analog converters (DACs), and imaging sensors.
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* Data sheet TPS7A56 6A, Low-VIN , Low-Noise, High-Accuracy, Ultra-Low Dropout (LDO) Voltage Regulator datasheet PDF | HTML 21 Mar 2025

Design & development

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Evaluation board

TPS7A57EVM-056 — TPS7A57 evaluation module for 5-A, low-VIN, low-noise, high-accuracy LDO voltage regulator

The TPS7A57 evaluation module (EVM) helps design engineers evaluate the operation and performance of the TPS7A57 linear regulator for possible use in their own circuit application. This EVM configuration contains a single low-noise, high-accuracy, linear regulator for a wide range of applications. (...)

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TPS7A5601 PSPICE Transient Model

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