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AC/DC & DC/DC converters (integrated FET)

TPS62740

現行

具 360nA Iq 的 2.2V-5.5V 輸入、超低功耗 300mA 降壓 DCDC 轉換器

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TPS62840 現行 60-nA 靜態電流 (IQ)、1.8V 至 6.5VIN、高效 750mA 降壓轉換器 Higher output current, lower IQ and additional features.

TPS62740

現行
產品規格表 立即訂購

產品詳細資料

Iout (max) (A) 0.3 Vin (min) (V) 2.2 Vin (max) (V) 5.5 Topology Buck Type Converter Switching frequency (min) (kHz) 2000 Switching frequency (max) (kHz) 2000 Features Adaptive/Dynamic Voltage Scaling, Enable, Light Load Efficiency, Light load efficiency, Output discharge, Synchronous Rectification Control mode Constant on-time (COT), DCS-Control Vout (min) (V) 1.8 Vout (max) (V) 3.3 Rating Catalog Operating temperature range (°C) -40 to 85 Iq (typ) (A) 0.0000003
Iout (max) (A) 0.3 Vin (min) (V) 2.2 Vin (max) (V) 5.5 Topology Buck Type Converter Switching frequency (min) (kHz) 2000 Switching frequency (max) (kHz) 2000 Features Adaptive/Dynamic Voltage Scaling, Enable, Light Load Efficiency, Light load efficiency, Output discharge, Synchronous Rectification Control mode Constant on-time (COT), DCS-Control Vout (min) (V) 1.8 Vout (max) (V) 3.3 Rating Catalog Operating temperature range (°C) -40 to 85 Iq (typ) (A) 0.0000003
WSON (DSS) 12 6 mm² 3 x 2
  • 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
  • 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

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.

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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TPS82740A 現行 具有 360nA Iq的 200-mA 降壓轉換器模組 For smaller BOM size and ease-of-use check out the module alternative.
TPS82740B 現行 具有 360nA Iq的 200-mA 降壓轉換器模組 For smaller BOM size and ease-of-use check out the module alternative.

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類型 標題 日期
* Data sheet TPS6274x 360nA IQ Step Down Converter For Low Power Applications datasheet (Rev. B) PDF | HTML 2014年 7月 10日
Application note QFN and SON PCB Attachment (Rev. C) PDF | HTML 2023年 12月 6日
Application note Quick Reference Guide To TI Buck Switching DC/DC Application Notes (Rev. B) PDF | HTML 2022年 5月 23日
Selection guide Buck Converter Quick Reference Guide (Rev. B) 2021年 4月 8日
White paper Extending Battery Life in Smart E-Locks (Rev. A) 2020年 6月 4日
White paper Benefits of a Resistor-to-Digital Converter in Ultra-Low Power Supplies 2019年 10月 14日
Analog Design Journal Methods of output-voltage adjustment for DC/DC converters 2019年 6月 14日
Application note Performing Accurate PFM Mode Efficiency Measurements (Rev. A) 2018年 12月 11日
Analog Design Journal Understanding 100% mode in low-power DC/DC converters 2018年 6月 22日
Analog Design Journal Achieving a clean startup by using a DC/DC converter with a precise enable-pin threshold 2017年 10月 24日
Technical article Never lose your luggage again with a smart tracker design PDF | HTML 2017年 10月 20日
Technical article How energy harvesting can extend the life of your fault indicator on the grid PDF | HTML 2017年 10月 18日
Analog Design Journal Testing tips for applying external power to supply outputs without an input voltage 2016年 10月 24日
Technical article Find your pot of gold—no luck required! PDF | HTML 2016年 3月 14日
Application note Efficient Super-Capacitor Charging with TPS62740 2015年 12月 15日
Analog Design Journal Understanding frequency variation in the DCS-Control(TM) topology 2015年 10月 30日
Technical article Achieve longer battery lifetimes from wireless sensors PDF | HTML 2015年 10月 22日
Application note Basic Calculation of a Buck Converter's Power Stage (Rev. B) 2015年 8月 17日
Analog Design Journal Five steps to a great PCB layout for a step-down converter 2015年 1月 29日
White paper Complete Wireless M-Bus Solution (Rev. B) 2014年 11月 5日
Analog Design Journal Accurately measuring efficiency of ultralow-IQ devices 2014年 1月 22日
EVM User's guide TPS62740 EVM User's Guide 2013年 11月 11日
Analog Design Journal High-efficiency, low-ripple DCS-Control offers seamless PWM/pwr-save transitions 2013年 7月 25日
Application note How to Measure the Control Loop of DCS-Control Devices (Rev. A) 2012年 8月 9日
Application note Understanding the Absolute Maximum Ratings of the SW Node (Rev. A) 2012年 1月 13日
Application note Choosing an Appropriate Pull-up/Pull-down Resistor for Open Drain Outputs 2011年 9月 19日
Analog Design Journal IQ: What it is, what it isn’t, and how to use it 2011年 6月 17日

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CDCI6214EVM — CDCI6214 超低功耗時鐘產生器評估模組

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 (...)
使用指南: PDF
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EVM430-FR6043 — MSP430FR6043 超音波感測評估模組

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 (...)
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TPS62740EVM-186 — TPS62740EVM-186 超低 IQ 降壓轉換器低功耗無線應用評估模組

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 (...)

使用指南: PDF
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模擬型號

TPS62740 PSpice Unencrypted Transient Model (Rev. A)

SLVM983A.ZIP (123 KB) - PSpice Model
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Gerber 檔案

TPS62740EVM-186 Gerber

SLVC544.ZIP (337 KB)
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