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TPS7A53B

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3-A, 1.1-V, low-VIN, low-noise high-accuracy ultra-low-dropout voltage regulator with 0.5-V low VREF

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Data sheet

TPS7A53B

ACTIVE
Data sheet Order now

Product details

Output options Adjustable Output Iout (max) (A) 3 Vin (max) (V) 6.5 Vin (min) (V) 1.1 Vout (max) (V) 5.15 Vout (min) (V) 0.5 Rating Catalog Noise (µVrms) 4.4 PSRR at 100 KHz (dB) 35 Iq (typ) (mA) 2.8 Thermal resistance θJA (°C/W) 46.5 Load capacitance (min) (µF) 22 Regulated outputs (#) 1 Features Enable, Foldback Overcurrent protection, Output discharge, Power good, Soft start Accuracy (%) 0.5 Dropout voltage (Vdo) (typ) (mV) 60 Operating temperature range (°C) -40 to 125
Output options Adjustable Output Iout (max) (A) 3 Vin (max) (V) 6.5 Vin (min) (V) 1.1 Vout (max) (V) 5.15 Vout (min) (V) 0.5 Rating Catalog Noise (µVrms) 4.4 PSRR at 100 KHz (dB) 35 Iq (typ) (mA) 2.8 Thermal resistance θJA (°C/W) 46.5 Load capacitance (min) (µF) 22 Regulated outputs (#) 1 Features Enable, Foldback Overcurrent protection, Output discharge, Power good, Soft start Accuracy (%) 0.5 Dropout voltage (Vdo) (typ) (mV) 60 Operating temperature range (°C) -40 to 125
VQFN-HR (RPS) 12 5.5 mm² 2.5 x 2.2
  • Accuracy over line, load, and temperature with BIAS: 0.5%
  • Output voltage noise: 4.6µVRMS
  • Low dropout: 110mV (max) at 3A with BIAS
  • Power-supply rejection ratio:
    • 48dB at 500kHz
  • Input voltage range:
    • Without BIAS: 1.4V to 6.5V
    • With BIAS: 1.1V to 6.5V
  • Adjustable output voltage range: 0.5V to 5.15V
  • Adjustable soft-start inrush control
  • Open-drain, power-good (PG) output
  • 2.5mm × 2.2mm, 12-pin VQFN package
  • Accuracy over line, load, and temperature with BIAS: 0.5%
  • Output voltage noise: 4.6µVRMS
  • Low dropout: 110mV (max) at 3A with BIAS
  • Power-supply rejection ratio:
    • 48dB at 500kHz
  • Input voltage range:
    • Without BIAS: 1.4V to 6.5V
    • With BIAS: 1.1V to 6.5V
  • Adjustable output voltage range: 0.5V to 5.15V
  • Adjustable soft-start inrush control
  • Open-drain, power-good (PG) output
  • 2.5mm × 2.2mm, 12-pin VQFN package

The TPS7A53B is a low-noise (4.6µVRMS), ultra-low dropout linear regulator (LDO) capable of sourcing 3A with only 110mV of maximum dropout. The device output voltage is adjustable from 0.5V to 5.15V using an external resistor divider.

The combination of low noise (4.6µVRMS), high PSRR, and high output current capability makes the TPS7A53B a great solution for powering noise-sensitive components. Applications include high-speed communications, video, medical, or test and measurement. The high PSRR and low noise performance of this device limits power-supply-generated phase noise and clock jitter, making this device a good choice for powering high-performance serializers and deserializers (SerDes), analog-to-digital converters (ADCs), and digital-to-analog converters (DACs). Specifically, RF amplifiers benefit from the high performance and 5.15V 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, 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 TPS7A53B provides optimal system performance.

As an adjustable voltage regulator, the design of the TPS7A53B offers versatility. This versatility makes the device a component of choice for analog loads such as voltage-controlled oscillators (VCOs), ADCs, DACs, and imaging sensors and for digital loads such as SerDes, FPGAs, and DSPs.

The TPS7A53B is a low-noise (4.6µVRMS), ultra-low dropout linear regulator (LDO) capable of sourcing 3A with only 110mV of maximum dropout. The device output voltage is adjustable from 0.5V to 5.15V using an external resistor divider.

The combination of low noise (4.6µVRMS), high PSRR, and high output current capability makes the TPS7A53B a great solution for powering noise-sensitive components. Applications include high-speed communications, video, medical, or test and measurement. The high PSRR and low noise performance of this device limits power-supply-generated phase noise and clock jitter, making this device a good choice for powering high-performance serializers and deserializers (SerDes), analog-to-digital converters (ADCs), and digital-to-analog converters (DACs). Specifically, RF amplifiers benefit from the high performance and 5.15V 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, 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 TPS7A53B provides optimal system performance.

As an adjustable voltage regulator, the design of the TPS7A53B offers versatility. This versatility makes the device a component of choice for analog loads such as voltage-controlled oscillators (VCOs), ADCs, DACs, and imaging sensors and for digital loads such as SerDes, FPGAs, and DSPs.
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Technical documentation

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* Data sheet TPS7A53B 3A, Low-Input Voltage, Low-Noise, High-Accuracy, Low-Dropout (LDO) Voltage Regulator datasheet (Rev. A) PDF | HTML 19 Jan 2024
White paper Demystifying LDO Turn-On (startup) Time PDF | HTML 05 Oct 2024
White paper Parallel LDO Architecture Design Using Ballast Resistors PDF | HTML 14 Dec 2022
White paper Comprehensive Analysis and Universal Equations for Parallel LDO's Using Ballast PDF | HTML 13 Dec 2022

Design & development

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

Evaluation board

TPS7A53EVM-031 — TPS7A53 evaluation module for 3-A, low-VIN, low-noise, high-accuracy ultra-LDO voltage regulator

The TPS7A53 evaluation module (EVM) is designed for a typical configuration to evaluate the operation and performance of the TPS7A53 device, which is a high-accuracy, 3-A, low-VIN, low-VOUT, low-dropout (LDO) voltage regulator.

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

User guide: PDF | HTML
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Simulation model

TPS7A53B PSpice Transient Model

SBVM994.ZIP (51 KB) - PSpice Model
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Calculation tool

PARALLEL-LDO-CALC — Parallel low-dropout (LDO) calculator

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 (...)

Supported products & hardware

Supported products & hardware

Products
Linear & low-dropout (LDO) regulators
TPS7A33 — 1-A, high-PSRR, negative, adjustable low-dropout voltage regulator with enable TPS7A47 — 1-A, 36-V, low-noise, high-PSRR, low-dropout voltage regulator with enable TPS7A47-Q1 — Automotive 1-A, 36-V, low-noise, high-PSRR, low-dropout voltage regulator with enable TPS7A4701-EP — Enhanced product, 36-V, 1-A, 4-μVRMS, RF LDO voltage regular TPS7A52 — 2-A, low-VIN (1.1-V), low-noise, high-accuracy, ultra-low-dropout (LDO) voltage regulator TPS7A52-Q1 — Automotive 2-A, low-VIN (1.1-V), low-noise, high-accuracy, ultra-low-dropout (LDO) voltage regulator TPS7A53 — 3-A, low-VIN (1.1 V) low-noise high-accuracy ultra-low-dropout (LDO) voltage regulator TPS7A53-Q1 — Automotive, 3-A, low-VIN (1.1 V) low-noise high-accuracy ultra-low-dropout (LDO) voltage regulator TPS7A53A-Q1 — Automotive, 3-A, low-VIN 5.6-µVRMS low-noise high-accuracy ultra-low dropout voltage regulator TPS7A53B — 3-A, 1.1-V, low-VIN, low-noise high-accuracy ultra-low-dropout voltage regulator with 0.5-V low VREF TPS7A54 — 4-A, low-VIN (1.1-V), low-noise, high-accuracy, ultra-low-dropout (LDO) voltage regulator TPS7A54-Q1 — Automotive 4-A, low-VIN (1.1-V), low-noise, high-accuracy, ultra-low-dropout (LDO) voltage regulator TPS7A57 — 5-A, low-input-voltage, low-noise, high-accuracy low-dropout (LDO) voltage regulator TPS7A83A — 2-A, low-VIN (1.1-V), low-noise, high-accuracy, ultra-low-dropout voltage regulator with power good TPS7A84A — 3-A, low-VIN (1.1-V), low-noise, high-accuracy, ultra-low-dropout voltage regulator with power good TPS7A85A — 4-A, low-VIN (1.1-V), low-noise, high-accuracy, ultra-low-dropout voltage regulator with power good TPS7A94 — 1-A, ultra-low noise, ultra-high PSRR, RF voltage regulator TPS7B7702-Q1 — Automotive 300-mA, off-battery (40-V), dual-channel adjustable antenna low-dropout voltage regulator TPS7A8300 — 2-A, low-VIN, low-2-A, low-VIN, low-noise, ultra-low-dropout voltage regulator with power good wi TPS7A84 — 3-A, low-VIN, low-noise, ultra-low-dropout voltage regulator with power good with high-accuracy TPS7A85 — 4-A, low-VIN, low-noise, ultra-low-dropout voltage regulator with power good with high-accuracy TPS7A96 — 2-A, ultra-low noise ultra-high PSRR RF voltage regulator TPS7A4501-SP — Radiation-hardened, QMLV, 1.5-V to 20-V input 1.5-A low-dropout (LDO) regulator TPS7H1111-SP — Radiation-hardened, QMLV and QMLP, 1.5A ultra-low-noise high-PSRR low-dropout (LDO) regulator TPS7H1111-SEP — Radiation-tolerant, 1.5A, ultra-low-noise ultra-high-PSRR RF LDO regulator TPS7A90 — 500-mA, low-noise, high-PSRR, adjustable ultra-low-dropout voltage regulator with high-accuracy TPS7A91 — 1-A, low-noise, high-PSRR, adjustable ultra-low-dropout voltage regulator with high-accuracy TPS7A92 — 2-A, low-noise, high-PSRR, adjustable ultra-low-dropout voltage regulator with high-accuracy
Hardware development
Evaluation board
TPS7A57EVM-081 — TPS7A57 evaluation module for 5-A low-noise high-accuracy low-dropout (LDO) voltage regulator
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Package Pins CAD symbols, footprints & 3D models
VQFN-HR (RPS) 12 Ultra Librarian
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