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Integrated Circuits (ICs)

TPS62740DSST

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Texas Instruments

2.2V-5.5V INPUT, ULTRA-LOW-POWER 300MA STEP-DOWN BUCK DCDC CONVERTER WITH 360NA IQ

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12-pin (DSS) package image
Integrated Circuits (ICs)

TPS62740DSST

Active
Texas Instruments

2.2V-5.5V INPUT, ULTRA-LOW-POWER 300MA STEP-DOWN BUCK DCDC CONVERTER WITH 360NA IQ

Technical Specifications

Parameters and characteristics for this part

SpecificationTPS62740DSST
ApplicationsConverter, Bluetooth (BLT)
Mounting TypeSurface Mount
Number of Outputs1
Operating Temperature [Max]85 °C
Operating Temperature [Min]-40 °C
Package / Case12-WFDFN Exposed Pad
Supplier Device Package12-WSON (2x3)
Voltage - Input [Max]5.5 V
Voltage - Input [Min]2.2 V
Voltage - Output [Max]3.3 V
Voltage - Output [Min]1.8 V

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

DistributorPackageQuantity$
DigikeyCut Tape (CT) 1$ 1.66
10$ 1.49
25$ 1.40
100$ 1.20
Digi-Reel® 1$ 1.66
10$ 1.49
25$ 1.40
100$ 1.20
Tape & Reel (TR) 250$ 1.12
500$ 0.98
1250$ 0.81
2500$ 0.76
6250$ 0.73
12500$ 0.70
NewarkEach (Supplied on Cut Tape) 1$ 1.62
10$ 1.19
25$ 1.08
50$ 1.02
100$ 0.96
Texas InstrumentsSMALL T&R 1$ 1.37
100$ 1.06
250$ 0.78
1000$ 0.56

Description

General part information

TPS62740 Series

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 × 3mm2WSON package and supports a total solutions size of 31mm2.

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 × 3mm2WSON package and supports a total solutions size of 31mm2.

Documents

Technical documentation and resources

Basic Calculation of a Buck Converter's Power Stage (Rev. B)

Application note

Extending Battery Life in Smart E-Locks (Rev. A)

White paper

TPS62740 EVM User's Guide

EVM User's guide

IQ: What it is, what it isn’t, and how to use it

Analog Design Journal

Performing Accurate PFM Mode Efficiency Measurements (Rev. A)

Application note

How energy harvesting can extend the life of your fault indicator on the grid

Technical article

Five steps to a great PCB layout for a step-down converter

Analog Design Journal

Accurately measuring efficiency of ultralow-IQ devices

Analog Design Journal

Understanding 100% mode in low-power DC/DC converters

Analog Design Journal

Never lose your luggage again with a smart tracker design

Technical article

How to Measure the Control Loop of DCS-Control Devices (Rev. A)

Application note

Understanding the Absolute Maximum Ratings of the SW Node (Rev. A)

Application note

Achieve longer battery lifetimes from wireless sensors

Technical article

High-efficiency, low-ripple DCS-Control offers seamless PWM/pwr-save transitions

Analog Design Journal

Buck Converter Quick Reference Guide (Rev. B)

Selection guide

Benefits of a Resistor-to-Digital Converter in Ultra-Low Power Supplies

White paper

TPS6274x 360nA IQ Step Down Converter For Low Power Applications datasheet (Rev. B)

Data sheet

Understanding frequency variation in the DCS-Control(TM) topology

Analog Design Journal

Testing tips for applying external power to supply outputs without an input voltage

Analog Design Journal

Complete Wireless M-Bus Solution (Rev. B)

White paper

Choosing an Appropriate Pull-up/Pull-down Resistor for Open Drain Outputs

Application note

Quick Reference Guide To TI Buck Switching DC/DC Application Notes (Rev. B)

Application note

Find your pot of gold—no luck required!

Technical article

Achieving a clean startup by using a DC/DC converter with a precise enable-pin threshold

Analog Design Journal

Methods of output-voltage adjustment for DC/DC converters

Analog Design Journal

Efficient Super-Capacitor Charging with TPS62740

Application note

QFN and SON PCB Attachment (Rev. C)

Application note