Home Power management Linear regulators (LDO)

TPS7A84A

ACTIVE
Order now

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

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

TPS7A84A

ACTIVE
Data sheet Order now

Product details

Parameters

Output options Adjustable Output, Programmable 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 (uVrms) 4.4 Iq (Typ) (mA) 2.8 Thermal resistance θJA (°C/W) 43 Load capacitance (Min) (µF) 47 Rating Catalog Regulated outputs (#) 1 Features Enable, Foldback Overcurrent Protection, Output Discharge, Power Good, Soft Start Accuracy (%) 0.75 PSRR @ 100 KHz (dB) 25 Dropout voltage (Vdo) (Typ) (mV) 110 Operating temperature range (C) -40 to 125 open-in-new Find other Linear regulators (LDO)

Package | Pins | Size

VQFN (RGR) 20 12 mm² 3.5 x 3.5 open-in-new Find other Linear regulators (LDO)

Features

  • 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

All trademarks are the property of their respective owners.

open-in-new Find other Linear regulators (LDO)

Description

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.

 open-in-new Find other Linear regulators (LDO)
Download
Similar products you might be interested in
open-in-new Compare products
Exact equivalent in functionality and parametrics to the compared device:
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).
Same functionality but is not pin-for-pin or parametrically equivalent to the compared device:
TPS74401 ACTIVE 3-A, low-VIN (0.8-V), low-noise, high-PSRR, adjustable ultra-low-dropout voltage regulator The TPS74401 is a 3-A LDO regulator with a smaller VOUT range (0.8 V to 3.3 V).

Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 5
Type Title Date
* Datasheet TPS7A84A 3-A, High-Accuracy (0.75%), Low-Noise (4.4-µVRMS) LDO Regulator datasheet (Rev. C) Dec. 16, 2020
Technical article LDO basics: capacitor vs. capacitance Aug. 01, 2018
Technical article LDO Basics: Preventing reverse current Jul. 25, 2018
Technical article LDO basics: introduction to quiescent current Jun. 20, 2018
Technical article LDO basics: noise – part 1 Jun. 14, 2017

Design & development

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

Hardware development

EVALUATION BOARD Download
document-generic User guide
29
Description
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 (...)
Features
  • Low Dropout: 180 mV (max) at 3 A
  • 1% (max) Accuracy Over Line, Load, and Temperature
  • ANY-OUT Output Voltage Range: 0.8 V to 3.95 V
  • Adjustable Output Voltage Range: 0.8 V to 5.0 V
  • High Power-Supply Ripple Rejection: 40 dB at 500 kHz
View details

Design tools & simulation

SIMULATION MODEL Download
SBVM574.ZIP (3 KB) - PSpice Model
SIMULATION MODEL Download
SBVM575.ZIP (76 KB) - PSpice Model

Reference designs

REFERENCE DESIGNS Download
Low noise power-supply reference design maximizing performance in 12.8 GSPS data acquisition systems
TIDA-01027 — This reference design demonstrates an efficient, low noise 5-rail power-supply design for very high-speed 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 control frequency content (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
High-Current Low-Noise Parallel LDO Reference Design
TIDA-01232 — 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 (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
VQFN (RGR) 20 View options

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Training series

View all TI training and videos

Videos