TPS62840

AKTIV

Hocheffizienter Abwärtswandler, 60 nA Ruhestrom (IQ), 1,8 bis 6,5 VIN, 750 mA

Produktdetails

Iout (max) (A) 0.75 Vin (min) (V) 1.8 Vin (max) (V) 6.5 Topology Buck Type Converter Switching frequency (min) (kHz) 1800 Switching frequency (max) (kHz) 1800 Features Enable, Fixed Output, Forced PWM, Light Load Efficiency, Light load efficiency, Output discharge, Over Current Protection, Soft Start Fixed, Synchronous Rectification, UVLO Fixed, UVLO fixed Control mode DCS-Control Vout (min) (V) 0.8, 1.8, 3.4 Vout (max) (V) 1.55, 3.3, 3.4, 3.6 Rating Catalog Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.00000006
Iout (max) (A) 0.75 Vin (min) (V) 1.8 Vin (max) (V) 6.5 Topology Buck Type Converter Switching frequency (min) (kHz) 1800 Switching frequency (max) (kHz) 1800 Features Enable, Fixed Output, Forced PWM, Light Load Efficiency, Light load efficiency, Output discharge, Over Current Protection, Soft Start Fixed, Synchronous Rectification, UVLO Fixed, UVLO fixed Control mode DCS-Control Vout (min) (V) 0.8, 1.8, 3.4 Vout (max) (V) 1.55, 3.3, 3.4, 3.6 Rating Catalog Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.00000006
DSBGA (YBG) 6 1.4136 mm² 0.95 x 1.488 HVSSOP (DGR) 8 9 mm² 3 x 3 VSON-HR (DLC) 8 3 mm² 2 x 1.5
  • 60-nA operating quiescent current
  • 100% duty-cycle mode with 120-nA IQ
  • Input voltage range VIN from 1.8 V to 6.5 V
  • Output current up to 750 mA
  • RF friendly DCS-Control™
  • 80% efficiency at 1 µA IOUT (3.6 VIN to 1.8 VOUT)
  • 16 selectable output voltages via VSET pin
  • Auto transition PFM/PWM or forced-PWM mode
  • Selectable forced PWM and STOP modes
  • Output discharge function
  • 25-nA shutdown current
  • SON-8, WCSP-6 and thermally enhanced HVSSOP-8 packages
  • 60-nA operating quiescent current
  • 100% duty-cycle mode with 120-nA IQ
  • Input voltage range VIN from 1.8 V to 6.5 V
  • Output current up to 750 mA
  • RF friendly DCS-Control™
  • 80% efficiency at 1 µA IOUT (3.6 VIN to 1.8 VOUT)
  • 16 selectable output voltages via VSET pin
  • Auto transition PFM/PWM or forced-PWM mode
  • Selectable forced PWM and STOP modes
  • Output discharge function
  • 25-nA shutdown current
  • SON-8, WCSP-6 and thermally enhanced HVSSOP-8 packages

The TPS62840 is a high-efficiency step-down converter with ultra-low operating quiescent current of typically 60 nA. The device contains special circuitry to achieve just 120 nA IQ in 100% mode to further extend battery life near the end of discharge.

The device uses DCS-Control to cleanly power radios and operates with a typical switching frequency of 1.8 MHz. In Power-Save Mode, the device extends the light load efficiency down to a load current range of 1 µA and below.

16 predefined output voltages can be selected by connecting a resistor to pin VSET, making the device flexible for various applications with a minimum amount of external components.

The STOP pin of the device immediately eliminates any switching noise in order to take a noise-free measurement in test and measurement systems.

The TPS62840 provides an output current of up to 750 mA. With an input voltage of 1.8 V to 6.5 V, the device supports multiple power sources such as 2S to 4S Alkaline, 1S to 2S Li-MnO2, or 1S Li-Ion/Li-SOCl2.

The TPS62840 is a high-efficiency step-down converter with ultra-low operating quiescent current of typically 60 nA. The device contains special circuitry to achieve just 120 nA IQ in 100% mode to further extend battery life near the end of discharge.

The device uses DCS-Control to cleanly power radios and operates with a typical switching frequency of 1.8 MHz. In Power-Save Mode, the device extends the light load efficiency down to a load current range of 1 µA and below.

16 predefined output voltages can be selected by connecting a resistor to pin VSET, making the device flexible for various applications with a minimum amount of external components.

The STOP pin of the device immediately eliminates any switching noise in order to take a noise-free measurement in test and measurement systems.

The TPS62840 provides an output current of up to 750 mA. With an input voltage of 1.8 V to 6.5 V, the device supports multiple power sources such as 2S to 4S Alkaline, 1S to 2S Li-MnO2, or 1S Li-Ion/Li-SOCl2.

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Technische Dokumentation

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Typ Titel Datum
* Data sheet TPS62840 1.8-V to 6.5-V, 750-mA, 60-nA IQ Step-Down Converter datasheet (Rev. D) PDF | HTML 27 Apr 2020
Application note QFN and SON PCB Attachment (Rev. C) PDF | HTML 06 Dez 2023
White paper Overcoming Low-IQ Challenges in Low-Power Applications (Rev. B) PDF | HTML 12 Apr 2023
Application note Quick Reference Guide To TI Buck Switching DC/DC Application Notes (Rev. B) PDF | HTML 23 Mai 2022
Technical article 3 quiescent-current (Iq) specifications you need to understand PDF | HTML 12 Nov 2021
Application note High-Performance CMOS Image Sensor Power Supply in Industrial Camera and Vision (Rev. A) 30 Jul 2021
EVM User's guide TPS62841-2EVM123 EVM User's Guide (Rev. A) PDF | HTML 03 Jun 2021
Application note Extend Battery Life with <100 nA IQ Buck Converter Achieving <150 µV Voltage Rip (Rev. A) PDF | HTML 07 Mai 2021
Selection guide Buck Converter Quick Reference Guide (Rev. B) 08 Apr 2021
Technical article Advantages of the STOP function for low-noise data-acquisition applications PDF | HTML 31 Mär 2020
White paper Benefits of a Resistor-to-Digital Converter in Ultra-Low Power Supplies 14 Okt 2019
EVM User's guide TPS62842EVM-103 User's Guide 28 Aug 2019
Technical article Deciphering low Iq: Using WEBENCH® to design near 100% duty-cycle for ultra-low po PDF | HTML 15 Jul 2019
Technical article Do all rails need low Iq? PDF | HTML 15 Jul 2019
EVM User's guide TPS62840-1YBGEVM56 User's Guide 24 Mai 2019
EVM User's guide TPS62840-1DLCEVM55 User's Guide 15 Mai 2019
Application note Performing Accurate PFM Mode Efficiency Measurements (Rev. A) 11 Dez 2018
Analog Design Journal Understanding 100% mode in low-power DC/DC converters 22 Jun 2018
Analog Design Journal Achieving a clean startup by using a DC/DC converter with a precise enable-pin threshold 24 Okt 2017
Technical article Never lose your luggage again with a smart tracker design PDF | HTML 20 Okt 2017
Analog Design Journal Testing tips for applying external power to supply outputs without an input voltage 24 Okt 2016
Analog Design Journal Understanding frequency variation in the DCS-Control(TM) topology 30 Okt 2015
Application note Basic Calculation of a Buck Converter's Power Stage (Rev. B) 17 Aug 2015
Analog Design Journal Five steps to a great PCB layout for a step-down converter 29 Jan 2015
Analog Design Journal Accurately measuring efficiency of ultralow-IQ devices 22 Jan 2014
Analog Design Journal High-efficiency, low-ripple DCS-Control offers seamless PWM/pwr-save transitions 25 Jul 2013
Application note How to Measure the Control Loop of DCS-Control Devices (Rev. A) 09 Aug 2012
Application note Understanding the Absolute Maximum Ratings of the SW Node (Rev. A) 13 Jan 2012
Application note Choosing an Appropriate Pull-up/Pull-down Resistor for Open Drain Outputs 19 Sep 2011
Analog Design Journal IQ: What it is, what it isn’t, and how to use it 17 Jun 2011

Design und Entwicklung

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Benutzerhandbuch: PDF | HTML
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Gerberdatei

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Gerberdatei

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Gehäuse Pins Herunterladen
DSBGA (YBG) 6 Optionen anzeigen
HVSSOP (DGR) 8 Optionen anzeigen
VSON-HR (DLC) 8 Optionen anzeigen

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