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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| Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Data sheet | TPS7A54 4-A, High-Accuracy (0.5%), Low-Noise (4.4 µVRMS), LDO Voltage Regulator datasheet (Rev. A) | PDF | HTML | Mar 23, 2020 |
| White paper | Demystifying LDO Turn-On (Start-Up) Time (Rev. B) | PDF | HTML | Mar 10, 2026 | |
| White paper | Reduce System Noise Using Parallel LDOs | PDF | HTML | Nov 3, 2025 | |
| White paper | Parallel LDO Architecture Design Using Ballast Resistors | PDF | HTML | Dec 14, 2022 | |
| White paper | Comprehensive Analysis and Universal Equations for Parallel LDO's Using Ballast | PDF | HTML | Dec 13, 2022 | |
| Application note | Point-of-Load Solutions for Network Interface Cards (NIC) | PDF | HTML | Sep 8, 2021 | |
| Technical article | Minimize noise and ripple with a low-noise buck converter | PDF | HTML | Oct 21, 2020 |
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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 (...)
The parallel low-dropout (LDO) calculator is a Microsoft® Excel®-based tool that provides worst-case analysis for parallel LDO regulators using ballast resistors. The tool helps the user identify the minimum number of parallel LDO regulators required and optimum ballast resistance for a (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| VQFN-HR (RPS) | 12 | Ultra Librarian |
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