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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) 5.2 Vout (Min) (V) 0.8 Noise (uVrms) 4.4 Iq (Typ) (mA) 4 Thermal resistance θJA (°C/W) 47.3 Load capacitance (Min) (µF) 22 Rating Catalog Features Enable, Foldback Overcurrent Protection, Output Discharge, Power Good, Soft Start Accuracy (%) 0.75 Dropout voltage (Vdo) (Typ) (mV) 200 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 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
Technical articles LDO basics: noise – part 1 Jun. 14, 2017

Design & development

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

Hardware development

EVALUATION BOARDS Download
document-generic User guide
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 MODELS Download
SBVM953.ZIP (20 KB) - PSpice Model
SIMULATION TOOLS Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)

CAD/CAE symbols

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

Ordering & quality

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