Product details

Output options Adjustable Output Iout (Max) (A) 4 Vin (Max) (V) 6.5 Vin (Min) (V) 1.1 Vout (Max) (V) 5.15 Vout (Min) (V) 0.8 Noise (uVrms) 4.4 Iq (Typ) (mA) 2.8 Thermal resistance θJA (°C/W) 46.5 Rating Catalog Load capacitance (Min) (µF) 22 Regulated outputs (#) 1 Features Enable, Foldback overcurrent protection, Output discharge, Power good, Soft start Accuracy (%) 0.5 PSRR @ 100 KHz (dB) 21 Dropout voltage (Vdo) (Typ) (mV) 85 Operating temperature range (C) -40 to 125
Output options Adjustable Output Iout (Max) (A) 4 Vin (Max) (V) 6.5 Vin (Min) (V) 1.1 Vout (Max) (V) 5.15 Vout (Min) (V) 0.8 Noise (uVrms) 4.4 Iq (Typ) (mA) 2.8 Thermal resistance θJA (°C/W) 46.5 Rating Catalog Load capacitance (Min) (µF) 22 Regulated outputs (#) 1 Features Enable, Foldback overcurrent protection, Output discharge, Power good, Soft start Accuracy (%) 0.5 PSRR @ 100 KHz (dB) 21 Dropout voltage (Vdo) (Typ) (mV) 85 Operating temperature range (C) -40 to 125
VQFN-HR (RPS) 12 6 mm² 2.5 x 2.2
  • 0.5% (max) accuracy over line, load, and temperature with BIAS
  • Output voltage noise: 4.4 µVRMS
  • Low dropout: 175 mV (max) at 4 A with BIAS
  • Power-supply rejection ratio:
    • 40 dB at 500 kHz
  • Input voltage range:
    • Without BIAS: 1.4 V to 6.5 V
    • With BIAS: 1.1 V to 6.5 V
  • Adjustable output voltage range: 0.8 V to 5.1 V
  • Adjustable soft-start inrush control
  • Open-drain, power-good (PG) output
  • 2.2-mm × 2.5-mm, 12-pin VQFN package
  • 0.5% (max) accuracy over line, load, and temperature with BIAS
  • Output voltage noise: 4.4 µVRMS
  • Low dropout: 175 mV (max) at 4 A with BIAS
  • Power-supply rejection ratio:
    • 40 dB at 500 kHz
  • Input voltage range:
    • Without BIAS: 1.4 V to 6.5 V
    • With BIAS: 1.1 V to 6.5 V
  • Adjustable output voltage range: 0.8 V to 5.1 V
  • Adjustable soft-start inrush control
  • Open-drain, power-good (PG) output
  • 2.2-mm × 2.5-mm, 12-pin VQFN package

The TPS7A54 is a low-noise (4.4 µVRMS), low-dropout linear regulator (LDO) capable of sourcing 4 A with only 175 mV of maximum dropout. The device output voltage is adjustable from 0.8 V to 5.1 V using an external resistor divider.

The combination of low noise (4.4 µVRMS), high PSRR, and high output current capability makes the TPS7A54 an excellent choice to power noise-sensitive components such as those found in radar power and infotainment applications. The high performance of this device limits power-supply-generated phase noise and clock jitter, making this device ideal for powering RF amplifiers, radar sensors, and chipsets. Specifically, RF amplifiers benefit from the high performance and 5.0-V output capability of the device.

For digital loads [such as application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), and digital signal processors (DSPs)] requiring low-input voltage, low-output (LILO) voltage operation, the exceptional accuracy (0.5% over load and temperature), remote sensing, excellent transient performance, and soft-start capabilities of the TPS7A54 provides optimal system performance.

As an adjustable voltage regulator, there is versatility in design of the TPS7A54 that makes the device a component of choice for analog loads such as voltage-controlled oscillator (VCO), analog-to-digital converter (ADC), digital-to-analog converter (DAC), and imaging sensors and for digital loads such as serializer/deserializer (SerDes), field-programmable gate arrays (FPGAs), and digital signal processors (DSPs).

 

The TPS7A54 is a low-noise (4.4 µVRMS), low-dropout linear regulator (LDO) capable of sourcing 4 A with only 175 mV of maximum dropout. The device output voltage is adjustable from 0.8 V to 5.1 V using an external resistor divider.

The combination of low noise (4.4 µVRMS), high PSRR, and high output current capability makes the TPS7A54 an excellent choice to power noise-sensitive components such as those found in radar power and infotainment applications. The high performance of this device limits power-supply-generated phase noise and clock jitter, making this device ideal for powering RF amplifiers, radar sensors, and chipsets. Specifically, RF amplifiers benefit from the high performance and 5.0-V output capability of the device.

For digital loads [such as application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), and digital signal processors (DSPs)] requiring low-input voltage, low-output (LILO) voltage operation, the exceptional accuracy (0.5% over load and temperature), remote sensing, excellent transient performance, and soft-start capabilities of the TPS7A54 provides optimal system performance.

As an adjustable voltage regulator, there is versatility in design of the TPS7A54 that makes the device a component of choice for analog loads such as voltage-controlled oscillator (VCO), analog-to-digital converter (ADC), digital-to-analog converter (DAC), and imaging sensors and for digital loads such as serializer/deserializer (SerDes), field-programmable gate arrays (FPGAs), and digital signal processors (DSPs).

 

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Technical documentation

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* Data sheet TPS7A54 4-A, High-Accuracy (0.5%), Low-Noise (4.4 µVRMS), LDO Voltage Regulator datasheet (Rev. A) PDF | HTML 23 Mar 2020
Technical article Minimize noise and ripple with a low-noise buck converter 21 Oct 2020

Design & development

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Evaluation board

TPS7A54EVM-031 — TPS7A54 4-A low-VIN (1.1-V) low-noise high-accuracy ultra-LDO voltage regulator evaluation module

The TPS7A54 evaluation module (EVM) is designed for a typical configuration to evaluate the operation and performance of the TPS7A54 device, which is a high-accuracy, 4-A, low-VIN, low-VOUT, low-dropout (LDO) voltage regulator.

The EVM circuit board is configured to be a reference design for (...)

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Simulation model

TPS7A5401RPS PSpice Model

SBVM953.ZIP (20 KB) - PSpice Model
Package Pins Download
VQFN-HR (RPS) 12 View options

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