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Product details

Parameters

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 Load capacitance (Min) (µF) 22 Rating Catalog 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 open-in-new Find other Linear regulators (LDO)

Package | Pins | Size

VQFN-HR (RPS) 12 6 mm² 2.5 x 2.2 open-in-new Find other Linear regulators (LDO)

Features

  • 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

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Description

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

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 5
Type Title Date
* Datasheet TPS7A54 4-A, High-Accuracy (0.5%), Low-Noise (4.4 µVRMS), LDO Voltage Regulator datasheet (Rev. A) Mar. 23, 2020
Technical articles Minimize noise and ripple with a low-noise buck converter Oct. 21, 2020
Technical articles LDO basics: capacitor vs. capacitance Aug. 01, 2018
Technical articles LDO Basics: Preventing reverse current Jul. 25, 2018
Technical articles LDO basics: introduction to quiescent current Jun. 20, 2018

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARD Download
29
Description

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 (...)

Features
  • Adjustable output-voltage range: 0.8 V to 5.2 V
  • Low dropout: 125 mV (max) at 4 A with BIAS
  • Output-voltage noise: 4.4 µVRMS
  • Adjustable soft-start in-rush control

Design tools & simulation

SIMULATION MODEL Download
SBVM953.ZIP (20 KB) - PSpice Model

CAD/CAE symbols

Package Pins Download
VQFN-HR (RPS) 12 View options

Ordering & quality

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  • Qualification summary
  • Ongoing reliability monitoring

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