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TPS7A53A-Q1

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Automotive, 3-A, low-VIN 5.6-µVRMS low-noise high-accuracy ultra-low dropout voltage regulator

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Data sheet

TPS7A53A-Q1

ACTIVE
Data sheet Order now

Product details

Rating Automotive Vin (max) (V) 6 Vin (min) (V) 1.13 Iout (max) (A) 3 Output options Fixed Output Vout (max) (V) 1 Vout (min) (V) 1 Fixed output options (V) 1 Noise (µVrms) 5.6 PSRR at 100 KHz (dB) 40 Iq (typ) (mA) 0.7 Features Enable, Foldback Overcurrent protection, Output discharge, Power good, Soft start, Wettable flanks package Thermal resistance θJA (°C/W) 42.5 TI functional safety category Functional Safety-Capable Load capacitance (min) (µF) 10 Regulated outputs (#) 1 Accuracy (%) 0.5 Dropout voltage (Vdo) (typ) (mV) 110 Operating temperature range (°C) -40 to 150
Rating Automotive Vin (max) (V) 6 Vin (min) (V) 1.13 Iout (max) (A) 3 Output options Fixed Output Vout (max) (V) 1 Vout (min) (V) 1 Fixed output options (V) 1 Noise (µVrms) 5.6 PSRR at 100 KHz (dB) 40 Iq (typ) (mA) 0.7 Features Enable, Foldback Overcurrent protection, Output discharge, Power good, Soft start, Wettable flanks package Thermal resistance θJA (°C/W) 42.5 TI functional safety category Functional Safety-Capable Load capacitance (min) (µF) 10 Regulated outputs (#) 1 Accuracy (%) 0.5 Dropout voltage (Vdo) (typ) (mV) 110 Operating temperature range (°C) -40 to 150
WQFN (RTJ) 20 16 mm² 4 x 4
  • 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:
    • IN: VIN + VDO to 6.0 V
    • BIAS: VOUT + VDO(BIAS) to 6.0 V
  • Low dropout: 130 mV at 3 A
  • Output voltage noise: 5.6 µVRMS
  • Accuracy over line, load, and temperature:
    • 1.3% (max)
  • Power-supply ripple rejection:
    • 40 dB at 500 kHz
  • Adjustable soft-start inrush control
  • Open-drain power-good (PG) output
  • Package:
    • 4-mm × 4-mm, 20-pin WQFN with wettable flanks and high CTE (12 ppm/°C) mold compound
  • 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:
    • IN: VIN + VDO to 6.0 V
    • BIAS: VOUT + VDO(BIAS) to 6.0 V
  • Low dropout: 130 mV at 3 A
  • Output voltage noise: 5.6 µVRMS
  • Accuracy over line, load, and temperature:
    • 1.3% (max)
  • Power-supply ripple rejection:
    • 40 dB at 500 kHz
  • Adjustable soft-start inrush control
  • Open-drain power-good (PG) output
  • Package:
    • 4-mm × 4-mm, 20-pin WQFN with wettable flanks and high CTE (12 ppm/°C) mold compound

The TPS7A53A-Q1 is a low-noise (5.6 µVRMS), low-dropout linear regulator (LDO) capable of sourcing 3 A with only 130 mV of dropout.

The combination of low noise (5.6 µVRMS), high PSRR, and high output current capability makes the TPS7A53A-Q1 designed for powering 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 useful for powering RF amplifiers, radar sensors, and chipsets. Specifically, signal chain components benefit from the high-performance of the device. The TPS7A53A-Q1 is available with a wettable flanks option to facilitate optical inspection.

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 (1.3% over load and temperature), remote sensing, excellent transient performance, and soft-start capabilities of the TPS7A53A-Q1 provide optimal system performance.

The versatility of the TPS7A53A-Q1 makes the device a component of choice for many demanding applications.

The TPS7A53A-Q1 is a low-noise (5.6 µVRMS), low-dropout linear regulator (LDO) capable of sourcing 3 A with only 130 mV of dropout.

The combination of low noise (5.6 µVRMS), high PSRR, and high output current capability makes the TPS7A53A-Q1 designed for powering 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 useful for powering RF amplifiers, radar sensors, and chipsets. Specifically, signal chain components benefit from the high-performance of the device. The TPS7A53A-Q1 is available with a wettable flanks option to facilitate optical inspection.

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 (1.3% over load and temperature), remote sensing, excellent transient performance, and soft-start capabilities of the TPS7A53A-Q1 provide optimal system performance.

The versatility of the TPS7A53A-Q1 makes the device a component of choice for many demanding applications.
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Technical documentation

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* Data sheet TPS7A53A-Q1 3-A, High-Accuracy, Automotive-Grade, Low-Noise, LDO Voltage Regulator datasheet (Rev. A) PDF | HTML 09 Dec 2022
White paper Reduce System Noise Using Parallel LDOs PDF | HTML 03 Nov 2025
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

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Evaluation board

TPS7A53EVM-080 — TPS7A53A evaluation module for 3-A low-noise high-accuracy LDO voltage regulator

The TPS7A53EVM-080 evaluation module (EVM) is a platform for evaluating the operation and performance of the TPS7A53A-Q1 voltage regulator. This EVM configuration contains a single low-noise, small-size, linear regulator for a wide range of applications. The regulator is capable of delivering up to (...)

User guide: PDF | HTML
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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 (...)

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