TPS62740

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2.2V-5.5V input, ultra-low-power 300mA step-down buck DCDC converter with 360nA Iq

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Product details

Parameters

Vin (Min) (V) 2.2 Vin (Max) (V) 5.5 Vout (Min) (V) 1.8 Vout (Max) (V) 3.3 Iout (Max) (A) 0.3 Regulated outputs (#) 1 Switching frequency (Min) (kHz) 2000 Switching frequency (Max) (kHz) 2000 Features Enable, Light Load Efficiency, Output Discharge, Synchronous Rectification, Adaptive/Dynamic Voltage Scaling Control mode Constant on-time (COT), DCS-Control Duty cycle (Max) (%) 100 Type Converter Operating temperature range (C) -40 to 85 Rating Catalog open-in-new Find other Buck converters (integrated switch)

Package | Pins | Size

WSON (DSS) 12 6 mm² 3 x 2 open-in-new Find other Buck converters (integrated switch)

Features

  • Input Voltage Range VIN from 2.2V to 5.5
  • Typ. 360nA Quiescent Current
  • Up to 90% Efficiency at 10µA Output Current
  • Up to 300mA / 400mA Output Current (TPS62740/TPS62742)
  • RF Friendly DCS-Control™
  • Up to 2 MHz Switching Frequency
  • Low Output Ripple Voltage
  • 16 Selectable Output Voltages in 100mV Steps between
    1.8V to 3.3V
  • Automatic Transition to No Ripple 100% Mode
  • Slew Rate Controlled Load Switch
  • Discharge Function on VOUT / LOAD
  • Power Good Output
  • Optimized for Operation with a Tiny 2.2µH Inductor
    and 10µF COUT
  • Total Solution Size <31mm2
  • Small 2 × 3 mm2 WSON Package
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Description

The TPS6274x is industry’s first step down converter featuring typ. 360nA quiescent current and operating with a tiny 2.2µH inductor and 10µF output capacitor. This new DCS-Control™ based device extends the light load efficiency range below 10µA load currents. TPS62740 supports output currents up to 300mA, TPS62742 up to 400mA. The device operates from rechargeable Li-Ion batteries, Li-primary battery chemistries such as Li-SOCl2, Li-MnO2 and two or three cell alkaline batteries. The input voltage range up to 5.5V allows also operation from a USB port and thin-film solar modules. The output voltage is user selectable by four VSEL pins within a range from 1.8V to 3.3V in 100mV steps. TPS6274x features low output ripple voltage and low noise with a small output capacitor. Once the battery voltage comes close to the output voltage (close to 100% duty cycle) the device enters no ripple 100% mode operation to prevent an increase of output ripple voltage. The device then stops switching and the output is connected to the input voltage. The integrated slew rate controlled load switch provides typ. 0.6Ω on-resistance and can distribute the selected output voltage to a temporarily used sub-system. The TPS6274x is available in a small 12 pin 2 × 3mm2 WSON package and supports a total solutions size of 31mm2.

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Technical documentation

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Type Title Date
* Datasheet TPS6274x 360nA IQ Step Down Converter For Low Power Applications datasheet (Rev. B) Jul. 10, 2014
Selection guides Buck Converter Quick Reference Guide (Rev. A) Mar. 31, 2020
White papers Benefits of a Resistor-to-Digital Converter in Ultra-Low Power Supplies Oct. 14, 2019
Application notes Methods of output-voltage adjustment for DC/DC converters Jun. 14, 2019
Technical articles Minimize the impact of the MLCC shortage on your power application Mar. 29, 2019
Application notes Performing Accurate PFM Mode Efficiency Measurements (Rev. A) Dec. 11, 2018
Application notes QFN and SON PCB Attachment (Rev. B) Aug. 24, 2018
Application notes Understanding 100% mode in low-power DC/DC converters Jun. 22, 2018
Application notes A Topical Index of TI Low Power Buck DC/DC Application Notes Jan. 17, 2018
Application notes Achieving a clean startup by using a DC/DC converter with a precise enable-pin t Oct. 24, 2017
Technical articles Never lose your luggage again with a smart tracker design Oct. 20, 2017
Technical articles How energy harvesting can extend the life of your fault indicator on the grid Oct. 18, 2017
Selection guides Low-Power DC/DC Converter Overview Guide (Rev. D) Feb. 09, 2017
White papers Extending battery life in smart locks Nov. 09, 2016
Application notes Testing tips for applying external power to supply outputs without an input volt Oct. 24, 2016
Selection guides Ultra-Low-Power DC/DC Converters for Battery-Powered and Energy-Harvesting Apps (Rev. B) May 04, 2016
Technical articles European smart grid RF communication in Sub-1 GHz – part 4 May 02, 2016
Selection guides DC/DC converters with DCS-Control topolgy selection guide (Rev. A) Mar. 17, 2016
Application notes Efficient Super-Capacitor Charging with TPS62740 Dec. 15, 2015
Application notes Understanding frequency variation in the DCS-Control(TM) topology Oct. 30, 2015
Application notes Basic Calculation of a Buck Converter's Power Stage (Rev. B) Aug. 17, 2015
Application notes Five steps to a great PCB layout for a step-down converter Jan. 29, 2015
More literature Complete Wireless M-Bus Solution (Rev. B) Nov. 05, 2014
Application notes Accurately measuring efficiency of ultralow-IQ devices Jan. 22, 2014
User guides TPS62740 EVM User's Guide Nov. 11, 2013
Application notes High-efficiency, low-ripple DCS-Control offers seamless PWM/pwr-save transitions Jul. 25, 2013
Application notes How to Measure the Control Loop of DCS-Control Devices (Rev. A) Aug. 09, 2012
Application notes Understanding the Absolute Maximum Ratings of the SW Node (Rev. A) Jan. 13, 2012
Application notes Choosing an Appropriate Pull-up/Pull-down Resistor for Open Drain Outputs Sep. 19, 2011
Application notes IQ: What it is, what it isn’t, and how to use it Jun. 17, 2011

Design & development

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

Hardware development

EVALUATION BOARDS Download
document-generic User guide
$149.00
Description
interface to access the I2C bus to communicate with the CDCI6214 as well as its control pins and the power supply. The edge-launch SMA-connectors enable measurements using 50 Ω equipment while the on-board termination allows to use high impedance probes. The flexible re-work options allow to (...)
Features
  • Ultra-low power operation
  • Single high-performance phase-locked-loop
  • Supports mixed power supply operation from 1.8 V to 3.3 V
  • Integrated EEPROM with two pages
  • General purpose inputs and outputs for individual output enable and  status signals
  • Output divider synchronization and digital delays
EVALUATION BOARDS Download
document-generic User guide
$249.00
Description
The EVM430-FR6043 evaluation kit is a development platform that can be used to evaluate the performance of the MSP430FR6043 for ultrasonic sensing applications (e.g. Smart Gas Meters). The MSP430FR6043 MCU is an ultra-low-power MCU that integrates an ultrasonic sensing analog front end (USS) for (...)
Features
  • USB powered and provision for external power 
  • Connector available to interface with different transducer types
  • BoosterPack headers available to interface with external boards (I2C, SPI, UART, GPIO) and RF communication modules
  • On-board segmented LCD 
  • On-board eZ-FET emulation circuit to enable programming (...)
EVALUATION BOARDS Download
document-generic User guide
$49.00
Description

The TPS62740EVM-186 is designed to help the user easily evaluate and test the operation and functionality of the TPS62740. The EVM converts a 2.2-V to 5.5-V input voltage to a regulated output voltage that is set between 1.8 V and 3.3 V at up to 300 mA. The TPS62740 also includes an integrated load (...)

Features
  • 360 nA  Iq
  • Integrated Load Switch
  • 2.2V to 5.5V Input Voltage Range
  • 300 mA Output Current

 

  • Related Terms:
    • Low Power Wireless
    • Ultra Low Power Wireless
    • Wireless Converter

Design tools & simulation

SIMULATION MODELS Download
SLVM983.ZIP (107 KB) - PSpice Model
GERBER FILES Download
SLVC544.ZIP (337 KB)

Reference designs

REFERENCE DESIGNS Download
Power Solution for Battery Operated Meters With 30-dBm wM-Bus at 169 MHz Reference Design
TIDA-00676 This power management solution delivering 900mA @3.6V from various battery types for smart flow metering applications (residential gas and water meters). TIDA-00676 includes an ETSI Cat. 1 receiver capable RF subsystem for wM-Bus @ 169 MHz with up to +30 dBm transmit power meets all technical (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Connected LED Lighting With IEEE802.3bt Power Over Ethernet (PoE) Reference Design
TIDA-01463 — This Power over Ethernet (PoE) reference design supplies power and data over a single Ethernet cable to a connected LED lighting ballast. This reference design uses TI's TPS2372-4 PoE powered device (PD) interface, LM3409 buck controller, LM5165 buck converter, TPS62740 buck converter, TM4C1292NCPDT (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Fault Monitoring for Overhead Fault Indicators using Ultra Low Power Reference Design
TIDA-00807 Fault Indicators (FI) are devices installed at certain distance on overhead power lines in electric power distribution networks to detect and indicate the occurence of faults. The benefit is reduction in outage times by identifying the fault zone easily.  The TIDA-00807 reference design (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Wireless IoT, Bluetooth® Low Energy, 4½ Digit, 100kHz True RMS Digital Multimeter
TIDA-01012 — Many products are now becoming connected through the Internet of Things (IoT), including test equipment such as digital multimeters (DMM).  Enabled by Texas Instruments’ SimpleLink™ ultra-low power wireless microcontroller (MCU) platform, the TIDA-01012 reference design demonstrates (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Enhanced Accuracy Battery Fuel Gauge Reference Design for Low Power Industrial IoT Field Metering
TIDA-01014 The Internet of Things (IoT) revolution is efficiently connecting applications and instruments, enabling battery powered, wide scale very low power sensor deployment.  New technologies, such as TI’s advanced sensor and low power connectivity devices, are enabling these instruments to be (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Highly Integrated 4 1/2 Digit Low Power Handheld Digital Multimeter (DMM) Platform Reference Design
TIDA-00879 — The TIDA-00879 TI-Design leverages the features, functions, performance, and state-of-the-art low power and power management capabilities of the MSP430F6736 MCU to demonstrate a highly integrated, low cost, and low power Digital Multimeter platform.  The solution delivers 4.5 digits or 60K (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Solar Dice: a Sensor Node in the Internet of Things (IoT) Reference Design
PMP9754 The Solar Dice are a battery-less, wirelessly-transmitting device for the Internet of Things.  An onboard accelerometer detects the orientation of the Dice and wirelessly transmits this to a host, such as a USB dongle or smartphone.  The reference design demonstrates an ultra-low power (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Smart Meter Power Management Solution with Energy Buffering Reference Design
PMP9763 Smart Wireless Sensors are typically powered by Long-Life Batteries Like LiSoCl2 chemistry which are limited in current. However, these sensors require high current pulses for transmitting the gathered data wirelessly. This Reference Design provides a solution for powering the MCU with reduced (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Ultrasonic Water Flow Meter Design using Time to Digital Conversion
TIDM-ULTRASONIC-FLOW-TDC The TIDM-ULTRASONIC-FLOW-TDC is a reference design for an ultrasonic flow meter (water, gas or heat meter) with LCD built using a Time-to-Digital converter and an ultra-low power MCU. Solution includes optimized leakage detection, low power consumption, and a small form factor that are (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Energy Buffering for Long-Life Battery Applications Reference Design
PMP9753 Long-Life Batteries like LiSOCl2 chemistry are unable to provide currents higher than e.g. 20mA. They furthermore suffer with reduced operation runtimes when higher currents are drawn. This application concept shows a proven reference design for a combination of TPS62740 and a Super-Capacitor (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
ETSI Cat2 Receiver Capable wM-Bus 868 MHz RF Subsystem for Smart Utility Meter & Heat Cost Allocator
TIDC-WMBUS-868MHZ This reference design describes an ETSI Cat. 2 receiver-capable RF subsystem for smart meters, fully compliant with the most popular wM-Bus S, T and C-modes at 868 MHz as per EN13757-4:2014. The SimpleLink RF transceiver device delivers market leading blocking, selectivity and RX sensitivity numbers (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
WSON (DSS) 12 View options

Ordering & quality

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