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Product details

Parameters

Output options Adjustable Output, Fixed Output Iout (Max) (A) 0.15 Vin (Max) (V) 5.5 Vin (Min) (V) 1.7 Vout (Max) (V) 5.5 Vout (Min) (V) 1.2 Fixed output options (V) 1.25, 1.5, 1.8, 2.5, 3, 3.1, 3.2, 3.3, 5 Noise (uVrms) 30 Iq (Typ) (mA) 0.4 Thermal resistance θJA (°C/W) 207 Load capacitance (Min) (µF) 0 Rating Catalog Regulated outputs (#) 1 Features Enable, Foldback Overcurrent Protection, Reverse Current Protection Accuracy (%) 1 PSRR @ 100 KHz (dB) 32 Dropout voltage (Vdo) (Typ) (mV) 30 Operating temperature range (C) -40 to 125 open-in-new Find other Linear regulators (LDO)

Package | Pins | Size

SOT-23 (DBV) 5 5 mm² 2.9 x 1.6 open-in-new Find other Linear regulators (LDO)

Features

  • Stable With or Without Capacitors of All Types
  • Input Voltage Range of 1.7 V to 5.5 V
  • Ultralow Dropout Voltage: 30 mV Typical (150-mA
    Load)
  • Excellent Load Transient Response–With or
    Without Optional Output Capacitor
  • New NMOS Topology Provides Low Reverse
    Leakage Current
  • Low Noise: 30 µVRMS Typical (10 kHz to 100 kHz)
  • 0.5% Initial Accuracy
  • 1% Overall Accuracy Over Line, Load, and
    Temperature
  • Less Than 1-µA Maximum IQ in Shutdown Mode
  • Thermal Shutdown and Specified Minimum and
    Maximum Current Limit Protection
  • Available in Multiple Output Voltage Versions
    • Fixed Outputs of 1.20 V to 5 V
    • Adjustable Outputs from 1.2 V to 5.5 V
    • Custom Outputs Available
  • APPLICATIONS
    • Smart Grid and Energy
    • Building Automation
    • Set-Top Boxes
    • Medical Equipment
    • Test and Measurement
    • Point-of-Sale Terminals
    • Wireless Infrastructure

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Description

The TPS731xx family of low-dropout (LDO) linear voltage regulators uses a new topology: an NMOS pass element in a voltage-follower configuration. This topology is stable using output capacitors with low equivalent series resistance (ESR), and even allows operation without a capacitor. The device also provides high reverse blockage (low reverse current) and ground pin current that is nearly constant over all values of output current.

The TPS731xx uses an advanced BiCMOS process to yield high precision while delivering very low dropout voltages and low ground pin current. Current consumption, when not enabled, is less than 1 µA and ideal for portable applications. The extremely low output noise (30 µVRMS with 0.1-µF CNR) is ideal for powering VCOs. These devices are protected by thermal shutdown and foldback current limit.

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Same functionality and pinout but is not an equivalent to the compared device:
NEW TPS7A20 PREVIEW 300-mA, low-noise, ultra-low-IQ, low-dropout (LDO) voltage regulator with high-PSRR 300-mA, low-noise (7 uVrms), low-IQ (6.5 uA) with high-PSRR in small package

Technical documentation

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Type Title Date
* Datasheet TPS731xx Capacitor-Free, NMOS, 150-mA Low Dropout Regulator With Reverse Current Protection datasheet (Rev. N) Dec. 17, 2015
* Radiation & Reliability reports TPS73125MDBVREP Reliability Report Aug. 26, 2011
* Radiation & Reliability reports TPS73133MDBVREP Reliability Report Aug. 26, 2011
Application notes A Topical Index of TI LDO Application Notes (Rev. F) Jun. 27, 2019
Technical articles LDO basics: capacitor vs. capacitance Aug. 01, 2018
Technical articles LDO Basics: Preventing reverse current Jul. 25, 2018
Technical articles LDO basics: introduction to quiescent current Jun. 20, 2018
Selection guides Low Dropout Regulators Quick Reference Guide (Rev. P) Mar. 21, 2018
Application notes LDO Noise Demystified (Rev. A) Aug. 09, 2017
Application notes LDO PSRR Measurement Simplified (Rev. A) Aug. 09, 2017
Technical articles LDO basics: noise – part 1 Jun. 14, 2017
More literature DMOS Delivers Dramatic Performance Gains to LDO Regulators (EDN mag) Feb. 14, 2001

Design & development

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Hardware development

EVALUATION BOARDS Download
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Design tools & simulation

SIMULATION MODELS Download
SBVM342.ZIP (21 KB) - PSpice Model
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SBVM343.ZIP (21 KB) - PSpice Model
SIMULATION MODELS Download
SBVM344.ZIP (22 KB) - PSpice Model
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SBVM345.ZIP (21 KB) - PSpice Model
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SBVM346.ZIP (21 KB) - PSpice Model
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SBVM347.ZIP (21 KB) - PSpice Model
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SBVM348.ZIP (21 KB) - PSpice Model
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SBVM349.ZIP (21 KB) - PSpice Model
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SBVM350.ZIP (21 KB) - PSpice Model
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SBVM351.ZIP (21 KB) - PSpice Model
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SBVM578.ZIP (1 KB) - PSpice Model
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SBVM579.ZIP (1 KB) - PSpice Model
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SBVM580.ZIP (1 KB) - PSpice Model
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SBVM581.ZIP (1 KB) - PSpice Model
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SBVM582.ZIP (1 KB) - PSpice Model
SIMULATION MODELS Download
SBVM583.ZIP (1 KB) - PSpice Model
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SBVM584.ZIP (1 KB) - PSpice Model
SIMULATION MODELS Download
SBVM585.ZIP (1 KB) - PSpice Model
SIMULATION MODELS Download
SBVM586.ZIP (1 KB) - PSpice Model
SIMULATION TOOLS Download
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PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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SCHEMATICS Download
SLVR326.PDF (1176 KB)
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SLVR327.PDF (1160 KB)
SCHEMATICS Download
SLVR331B.PDF (381 KB)

Reference designs

REFERENCE DESIGNS Download
Low Power, Low Noise 24b Analog Front-End Reference Design for DAQ and Wireless Sensor IoT Systems
TIDA-01013 — The need for lower power, lower noise analog front-ends (AFE) is becoming increasingly important in many applications today, such as data acquisition systems (DAQs), field instrumentation, Internet-of-Things (IoT), and automatic test equipment. In many cases, this need is highlighted by the advent (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Universal data concentrator reference design supporting Ethernet, 6LoWPAN RF mesh and more
TIDA-010032 — IPv6-based grid communications are becoming the standard choice in industrial markets and applications like smart meters and grid automation. The universal data concentrator design provides a complete IPv6-based network solution integrated with Ethernet backbone communication, 6LoWPAN RF mesh (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Reference Design to Extend Coin Cell Battery Run Time in Wireless Ultrasonic Gas Leak Detector
TIDA-01236 This reference design demonstrates a low-power wireless sensor which detects gas leaks by analyzing the ultrasonic spectrum for particular signatures. The system is designed to operate from a single Li-Primary coin cell and communicate wirelessly to a base station, which removes all requirements for (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Flyback, Linear Regulator for Medical Pack (5.75V @ 10mA)
PMP2187 — This design provides isolated 5V (x2), 3.3V, 2.5V and -5V outputs. All outputs are noise filtered using Low Drop Out (LDO) linear regulators for noise sensitive applications such as medical imaging and data acquisition.
Design files

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SOT-23 (DBV) 5 View options

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