Product details

Vin (Min) (V) 1.8 Vin (Max) (V) 6.5 Vout (Min) (V) 0.8 Vout (Max) (V) 3.6 Iout (Max) (A) 0.75 Iq (Typ) (uA) 0.06 Switching frequency (Min) (kHz) 1800 Switching frequency (Max) (kHz) 1800 Features Enable, Fixed Output, Forced PWM, Light Load Efficiency, Output Discharge, Over Current Protection, Soft Start Fixed, Synchronous Rectification, UVLO Fixed Operating temperature range (C) -40 to 125 Rating Catalog Regulated outputs (#) 1
Vin (Min) (V) 1.8 Vin (Max) (V) 6.5 Vout (Min) (V) 0.8 Vout (Max) (V) 3.6 Iout (Max) (A) 0.75 Iq (Typ) (uA) 0.06 Switching frequency (Min) (kHz) 1800 Switching frequency (Max) (kHz) 1800 Features Enable, Fixed Output, Forced PWM, Light Load Efficiency, Output Discharge, Over Current Protection, Soft Start Fixed, Synchronous Rectification, UVLO Fixed Operating temperature range (C) -40 to 125 Rating Catalog Regulated outputs (#) 1
DSBGA (YBG) 6 1 mm² 1.508 x 1.008 HVSSOP (DGR) 8 VSON-HR (DLC) 8 3 mm² 1.5 x 2
  • 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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Technical documentation

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Type Title Date
* Data sheet TPS62840 1.8-V to 6.5-V, 750-mA, 60-nA IQ Step-Down Converter datasheet (Rev. D) 27 Apr 2020
Technical article 3 quiescent-current (Iq) specifications you need to understand 12 Nov 2021
White paper 克服低功耗應用中的低 IQ 挑戰 (Rev. A) 29 Oct 2021
White paper 저전력 애플리케이션의 저 IQ 문제점극복 (Rev. A) 29 Oct 2021
White paper Overcoming Low-IQ Challenges in Low-Power Applications (Rev. A) 15 Sep 2021
Application note High-Performance CMOS Image Sensor Power Supply in Industrial Camera and Vision (Rev. A) 30 Jul 2021
Application note A Topical Index of TI Low Power Buck DC/DC Application Notes (Rev. A) 25 Jun 2021
User guide TPS62841-2EVM123 EVM User's Guide (Rev. A) 03 Jun 2021
Application note Extend Battery Life with <100 nA IQ Buck Converter Achieving <150 µV Voltage Rip (Rev. A) 07 May 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 31 Mar 2020
White paper Benefits of a Resistor-to-Digital Converter in Ultra-Low Power Supplies 14 Oct 2019
User guide TPS62842EVM-103 User's Guide 28 Aug 2019
Technical article Do all rails need low Iq? 15 Jul 2019
Technical article Deciphering low Iq: Using WEBENCH® to design near 100% duty-cycle for ultra-low power applications 15 Jul 2019
User guide TPS62840-1YBGEVM56 User's Guide 24 May 2019
User guide TPS62840-1DLCEVM55 User's Guide 15 May 2019
Application note Performing Accurate PFM Mode Efficiency Measurements (Rev. A) 11 Dec 2018
Application note QFN and SON PCB Attachment (Rev. B) 24 Aug 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 t 24 Oct 2017
Analog design journal Testing tips for applying external power to supply outputs without an input volt 24 Oct 2016
Analog design journal Understanding frequency variation in the DCS-Control(TM) topology 30 Oct 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 & development

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

Evaluation board

TPS62840-1DLCEVM55 — 60-nA IQ, QFN package, high-efficiency 750-mA step-down converters evaluation module (2 circuits)

The TPS62840-1DLCEVM55 evaluation module (EVM) facilitates the evaluation of the TPS6284XDLC family of 750-mA step-down converters with 60-nA IQ in small 1.5-mm by 2.0-mm QFN packages. The EVM contains 2 separate circuits to create output voltages between 0.8 V and 3.3 V from higher input voltages (...)

Out of stock on TI.com
Evaluation board

TPS62840-1YBGEVM56 — 60-nA IQ, WCSP package, high-efficiency 750-mA step-down converters evaluation module (2 circuits)

The TPS62840-1YBGEVM056 evaluation module (EVM) facilitates the evaluation of the TPS6284XYBG family of 750-mA step-down converters with 60-nA IQ in small 1.5-mm by 1-mm WCSP packages with 0.4-mm pitch. The EVM contains 2 separate circuits to create output voltages between 0.8 V and 3.3 V from (...)

Out of stock on TI.com
Evaluation board

TPS62841-2EVM123 — TPS62841 and TPS62842 60-nA IQ, DGR package, 750-mA buck converters evaluation module (2 circuits)

The TPS62841-2EVM123 evaluation module (EVM) facilitates the evaluation of the TPS6284XDGR 750-mA step-down converter with 60-nA IQ in a high thermal performance HVSSOP package. The EVM contains two separate circuits to create output voltages between 0.8 V and 3.6 V from higher input voltages (...)

In stock
Limit: 5
Evaluation board

TPS62842EVM-103 — 60-nA IQ, DGR package, high efficiency 750-mA step-down converter evaluation module

The TPS62842EVM-103 evaluation module (EVM) facilitates the evaluation of the TPS62842DGR 750-mA step-down converter with 60-nA IQ in a high thermal performance HVSSOP package. The EVM contains a circuit to convert output voltages between 1.8 V and 3.6 V from higher input voltages between 1.8 V and (...)

In stock
Limit: 5
Simulation model

TPS62840 PSpice Unencrypted Transient Model (Rev. C)

SLUM691C.ZIP (83 KB) - PSpice Model
Simulation model

TPS62842 PSpice Transient Model

SLVMD74.ZIP (92 KB) - PSpice Model
Simulation model

TPS62841 PSPICE Model

SLVMD75.ZIP (98 KB) - PSpice Model
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

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 (...)
Gerber file

BSR055 Gerbers

SLVC773.ZIP (452 KB)
Gerber file

BSR056 Gerbers

SLVC774.ZIP (445 KB)
Reference designs

TIDA-010053 — Low-power option for smart meter wireless module using primary cells reference design

This reference design showcases three different power architectures for smart flow meters with lithium manganese dioxide (LiMnO2) primary batteries and commercial off-the-shelf narrowband modules for Internet of Things (IoT)-related applications. The three power solutions are combined with the (...)
Reference designs

TIDA-010224 — Low-power wireless camera reference design for extended battery life

This reference design provides a solution for a battery-operated wireless camera by combining industry-leading image processing, connectivity, sensor and power. High-efficiency power converters along with optimized system architecture help to increase battery life. The image
processor with a (...)
Reference designs

TIDA-010072 — Air blower and valve control reference design for respiratory applications

This reference design provides a compact system design capable of supporting motor acceleration and deceleration up to ±200 kRPM/s, which is a key requirement in many respirator applications. The design supports a number of offboard C2000 controllers including (...)
Package Pins Download
DSBGA (YBG) 6 View options
HVSSOP (DGR) 8 View options
VSON-HR (DLC) 8 View options

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