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TPS7A53-Q1

ACTIVE

Automotive, 3-A, low-VIN (1.1 V) low-noise high-accuracy ultra-low-dropout (LDO) voltage regulator

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Data sheet

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NEW TPS7A57-Q1 ACTIVE Automotive, 5A, low-input-voltage, low-noise, high-accuracy low-dropout (LDO) voltage regulator Higher current with lower dropout and superior load transient response

TPS7A53-Q1

ACTIVE
Data sheet Order now

Product details

Rating Automotive Vin (max) (V) 6.5 Vin (min) (V) 1.1 Iout (max) (A) 3 Output options Adjustable Output Vout (max) (V) 5.15 Vout (min) (V) 0.8 Noise (µVrms) 4.4 PSRR at 100 KHz (dB) 39 Iq (typ) (mA) 3 Features Enable, Foldback Overcurrent protection, Output discharge, Power good, Soft start, Wettable flanks package Thermal resistance θJA (°C/W) 40, 42.5 TI functional safety category Functional Safety-Capable Load capacitance (min) (µF) 22 Regulated outputs (#) 1 Accuracy (%) 1 Dropout voltage (Vdo) (typ) (mV) 110 Operating temperature range (°C) -40 to 150
Rating Automotive Vin (max) (V) 6.5 Vin (min) (V) 1.1 Iout (max) (A) 3 Output options Adjustable Output Vout (max) (V) 5.15 Vout (min) (V) 0.8 Noise (µVrms) 4.4 PSRR at 100 KHz (dB) 39 Iq (typ) (mA) 3 Features Enable, Foldback Overcurrent protection, Output discharge, Power good, Soft start, Wettable flanks package Thermal resistance θJA (°C/W) 40, 42.5 TI functional safety category Functional Safety-Capable Load capacitance (min) (µF) 22 Regulated outputs (#) 1 Accuracy (%) 1 Dropout voltage (Vdo) (typ) (mV) 110 Operating temperature range (°C) -40 to 150
VQFN (RGR) 20 12.25 mm² (3.5 mm × 3.5 mm) VQFNP (RTK) 20 16 mm² (4 mm × 4 mm)
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified for Automotive Applications
    • Temperature Grade 1: –40°C ≤ TA ≤ +125°C
    • HBM ESD Classification Level 2
    • CDM ESD Classification Level C4A
  • Extended Junction Temperature (TJ) Range: –40°C to +150°C
  • 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 5.15 V
  • Low Dropout: 180 mV (max) at 3 A With BIAS
  • Output Voltage Noise: 4.4 µVRMS
  • 1% (max) Accuracy Over Line, Load, and Temperature With BIAS
  • Power-Supply Ripple Rejection:
    • 40 dB at 500 kHz
  • Adjustable Soft-Start Inrush Control
  • Open-Drain Power-Good (PG) Output
  • Packages:
    • 3.5-mm × 3.5-mm, 20-Pin VQFN
    • 4-mm × 4-mm, 20-Pin VQFNP with Wettable Flanks and High CTE (12 ppm/ºC) Mold Compound
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified for Automotive Applications
    • Temperature Grade 1: –40°C ≤ TA ≤ +125°C
    • HBM ESD Classification Level 2
    • CDM ESD Classification Level C4A
  • Extended Junction Temperature (TJ) Range: –40°C to +150°C
  • 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 5.15 V
  • Low Dropout: 180 mV (max) at 3 A With BIAS
  • Output Voltage Noise: 4.4 µVRMS
  • 1% (max) Accuracy Over Line, Load, and Temperature With BIAS
  • Power-Supply Ripple Rejection:
    • 40 dB at 500 kHz
  • Adjustable Soft-Start Inrush Control
  • Open-Drain Power-Good (PG) Output
  • Packages:
    • 3.5-mm × 3.5-mm, 20-Pin VQFN
    • 4-mm × 4-mm, 20-Pin VQFNP with Wettable Flanks and High CTE (12 ppm/ºC) Mold Compound

The TPS7A53-Q1 device is a low-noise (4.4 µVRMS), low-dropout linear regulator (LDO) capable of sourcing 3 A with only 180 mV of maximum dropout. The device output voltage is adjustable from 0.8 V to 5.15 V using an external resistor divider.

The combination of low-noise (4.4 µVRMS), high-PSRR, and high output current capability makes the TPS7A53-Q1 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 an excellent choice 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) that require low-input, low-output (LILO) voltage operation, the exceptional accuracy (1% over load and temperature), remote sensing, excellent transient performance, and soft-start capabilities of the TPS7A53-Q1 provide optimal system performance.

The versatility of the TPS7A53-Q1 makes the device a component of choice for many demanding applications.

The TPS7A53-Q1 device is a low-noise (4.4 µVRMS), low-dropout linear regulator (LDO) capable of sourcing 3 A with only 180 mV of maximum dropout. The device output voltage is adjustable from 0.8 V to 5.15 V using an external resistor divider.

The combination of low-noise (4.4 µVRMS), high-PSRR, and high output current capability makes the TPS7A53-Q1 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 an excellent choice 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) that require low-input, low-output (LILO) voltage operation, the exceptional accuracy (1% over load and temperature), remote sensing, excellent transient performance, and soft-start capabilities of the TPS7A53-Q1 provide optimal system performance.

The versatility of the TPS7A53-Q1 makes the device a component of choice for many demanding applications.
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Technical documentation

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* Data sheet TPS7A53-Q1 3-A, High-Accuracy, Automotive-Grade, Low-Noise, LDO Voltage Regulator datasheet (Rev. B) PDF | HTML Jul 11, 2018
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
Functional safety information TPS7A53-Q1 Functional Safety FIT Rate, FMD and Pin FMA (Rev. A) PDF | HTML Dec 2, 2022
Design guide Automated Parking System Reference Design Using 77-GHz mmWave Sensor Jan 24, 2019
More literature Fundamentals of designing with LDOs in auto battery direct connect applications Feb 27, 2017

Design & development

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Evaluation board

TPS7A53EVM-005 — TPS7A53-Q1 evaluation module for 3-A, low-VIN, low-noise, high-accuracy LDO voltage regulator

The TPS7A53EVM-005 evaluation module (EVM) is designed for a typical configuration to evaluate the operation and performance of the TPS7A53-Q1 device, which is an automotive-grade 3-A low-dropout (LDO) voltage regulator.

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

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Simulation model

TPS7A5301 PSpice Transient Model

SBVM752.ZIP (38 KB) - PSpice model
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Simulation model

TPS7A5301 Unencrypted PSpice Transient Model

SBVM751.ZIP (3 KB) - PSpice model
Supported products & hardware
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 (...)

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Package Pins CAD symbols, footprints & 3D models
VQFN (RGR) 20 Ultra Librarian
VQFNP (RTK) 20 Ultra Librarian
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