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TPS7A84A

ACTIVE

3-A, low-VIN (1.1-V), low-noise, high-accuracy, ultra-low-dropout voltage regulator with power good

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TPS7A84 ACTIVE 3-A, low-VIN, low-noise, ultra-low-dropout voltage regulator with power good with high-accuracy 3-A LDO regulator with good accuracy (1%) and improved thermal resistance (35.4°C/W).

TPS7A84A

ACTIVE
Data sheet Order now

Product details

Output options Adjustable Output, Fixed 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 Noise (µVrms) 4.4 Iq (typ) (mA) 2.8 Thermal resistance θJA (°C/W) 43 Rating Catalog Load capacitance (min) (µF) 47 Regulated outputs (#) 1 Features Enable, Foldback Overcurrent protection, Output discharge, Power good, Soft start Accuracy (%) 0.75 PSRR at 100 KHz (dB) 25 Dropout voltage (Vdo) (typ) (mV) 110 Operating temperature range (°C) -40 to 125
Output options Adjustable Output, Fixed 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 Noise (µVrms) 4.4 Iq (typ) (mA) 2.8 Thermal resistance θJA (°C/W) 43 Rating Catalog Load capacitance (min) (µF) 47 Regulated outputs (#) 1 Features Enable, Foldback Overcurrent protection, Output discharge, Power good, Soft start Accuracy (%) 0.75 PSRR at 100 KHz (dB) 25 Dropout voltage (Vdo) (typ) (mV) 110 Operating temperature range (°C) -40 to 125
VQFN (RGR) 20 12.25 mm² 3.5 x 3.5
  • Low dropout: 180 mV (maximum) at 3 A with BIAS
  • 0.75% (maximum) accuracy over line, load, and temperature with BIAS
  • Output voltage noise: 4.4 µVRMS
  • Input voltage range:
    • Without BIAS: 1.4 V to 6.5 V
    • With BIAS: 1.1 V to 6.5 V
  • TPS7A8400A output voltage range:
    • Adjustable operation: 0.8 V to 5.15 V
    • ANY-OUT™ operation: 0.8 V to 3.95 V
  • TPS7A8401A output voltage range:
    • Adjustable operation: 0.5 V to 5.15 V
    • ANY-OUT™ operation: 0.5 V to 2.075 V
  • Power-supply ripple rejection:
    • 40 dB at 500 kHz
  • Excellent load transient response
  • Adjustable soft-start in-rush control
  • Open-drain power-good (PG) output
  • Low dropout: 180 mV (maximum) at 3 A with BIAS
  • 0.75% (maximum) accuracy over line, load, and temperature with BIAS
  • Output voltage noise: 4.4 µVRMS
  • Input voltage range:
    • Without BIAS: 1.4 V to 6.5 V
    • With BIAS: 1.1 V to 6.5 V
  • TPS7A8400A output voltage range:
    • Adjustable operation: 0.8 V to 5.15 V
    • ANY-OUT™ operation: 0.8 V to 3.95 V
  • TPS7A8401A output voltage range:
    • Adjustable operation: 0.5 V to 5.15 V
    • ANY-OUT™ operation: 0.5 V to 2.075 V
  • Power-supply ripple rejection:
    • 40 dB at 500 kHz
  • Excellent load transient response
  • Adjustable soft-start in-rush control
  • Open-drain power-good (PG) output

The TPS7A84A is a low-noise, low-dropout linear regulator (LDO) capable of sourcing 3 A with only 180-mV of maximum dropout. The device is offered in two output voltage ranges. The TPS7A8400A output voltage is pin-programmable from 0.8 V to 3.95 V, with a 50-mV resolution, and adjustable from 0.8 V to 5.15 V using an external resistor divider. The TPS7A8401A output voltage is pin-programmable from 0.5 V to 2.075 V, with a 25-mV resolution, and adjustable from 0.5 V to 5.15 V using an external resistor divider.

The combination of low-noise, high-PSRR, and high output-current capability makes the TPS7A84A ideal to power noise-sensitive components such as those found in high-speed communications, video, medical, or test and measurement applications. The high performance of the TPS7A84A limits power-supply-generated phase noise and clock jitter, making this device ideal for powering high-performance serializer and deserializer (SerDes), analog-to-digital converters (ADCs), digital-to-analog converters (DACs), and RF components. Specifically, RF amplifiers benefit from the high-performance and > 5-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 (0.75% over line, load, and temperature), remote sensing, excellent transient performance, and soft-start capabilities of the TPS7A84A ensure optimal system performance.

The versatility of the TPS7A84A makes the device a component of choice for many demanding applications.

The TPS7A84A is a low-noise, low-dropout linear regulator (LDO) capable of sourcing 3 A with only 180-mV of maximum dropout. The device is offered in two output voltage ranges. The TPS7A8400A output voltage is pin-programmable from 0.8 V to 3.95 V, with a 50-mV resolution, and adjustable from 0.8 V to 5.15 V using an external resistor divider. The TPS7A8401A output voltage is pin-programmable from 0.5 V to 2.075 V, with a 25-mV resolution, and adjustable from 0.5 V to 5.15 V using an external resistor divider.

The combination of low-noise, high-PSRR, and high output-current capability makes the TPS7A84A ideal to power noise-sensitive components such as those found in high-speed communications, video, medical, or test and measurement applications. The high performance of the TPS7A84A limits power-supply-generated phase noise and clock jitter, making this device ideal for powering high-performance serializer and deserializer (SerDes), analog-to-digital converters (ADCs), digital-to-analog converters (DACs), and RF components. Specifically, RF amplifiers benefit from the high-performance and > 5-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 (0.75% over line, load, and temperature), remote sensing, excellent transient performance, and soft-start capabilities of the TPS7A84A ensure optimal system performance.

The versatility of the TPS7A84A makes the device a component of choice for many demanding applications.
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TPS74401 ACTIVE 3-A, low-VIN (0.8-V), low-noise, high-PSRR, adjustable ultra-low-dropout voltage regulator 3-A LDO regulator with a smaller VOUT range (0.8 V to 3.3 V).

Technical documentation

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* Data sheet TPS7A84A 3-A, High-Accuracy (0.75%), Low-Noise (4.4-µVRMS) LDO Regulator datasheet (Rev. C) PDF | HTML 16 Dec 2020
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

TPS7A84EVM-753 — TPS7A84 3-A high-current, 1% high-accuracy, 4.4-μVRMS LDO regulator evaluation module

The TPS7A84EVM-753 evaluation module is designed for a typical configuration to evaluate the operation and performance of the TPS7A84, High-Current 3-A low dropout voltage regulator. The EVM circuit board is configured to be a reference design for engineering applications requiring current to a (...)
User guide: PDF
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Simulation model

TPS7A84 PSpice Transient Model

SBVM575.ZIP (76 KB) - PSpice Model
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Simulation model

TPS7A84 Unencrypted PSpice Transient Model

SBVM574.ZIP (3 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 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-assured (RHA), 1.5-V to 20-V input, 1.5-A, adjustable low-dropout (LDO) regulator TPS7H1111-SP — Radiation-hardness-assured (RHA), 1.5-A, ultra-low noise ultra-high PSRR RF LDO linear regulator TPS7H1111-SEP — Radiation-tolerant, 1.5-A, ultra-low noise, ultra-high PSRR RF LDO regulator
Hardware development
Evaluation board
TPS7A57EVM-081 — TPS7A57 evaluation module for 5-A low-noise high-accuracy low-dropout (LDO) voltage regulator
Download
Reference designs

TIDA-01027 — Low-noise power supply reference design maximizing performance in 12.8-GSPS data acquisition systems

This reference design demonstrates an efficient, low-noise five-rail power supply design for very high-speed Data Acquisition (DAQ) systems capable of > 12.8 GSPS. The power supply DC/DC converters are frequency-synchronized and phase-shifted in order to minimize input current ripple and (...)
Design guide: PDF
Schematic: PDF
Reference designs

TIDA-01232 — High-Current Low-Noise Parallel LDO Reference Design

This parallel low-dropout (LDO) reference design showcases the TPS7A85 low-noise LDO linear regulator in a parallel configuration, which is capable of sourcing 3.5 A per LDO or 7 A per board. Additional design flexibility includes the ability to stack this design to meet the current (...)
Design guide: PDF
Schematic: PDF
Package Pins Download
VQFN (RGR) 20 View options
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