TPS610981

ACTIVE

Low input voltage, 3.3V output voltage, synchronous boost converter with integrated LDO/load switch

Top

Product details

Parameters

Vin (Min) (V) 0.7 Vin (Max) (V) 4.5 Vout (Min) (V) 3.201 Vout (Max) (V) 3.399 Switch current limit (Typ) (A) 0.5 Regulated outputs (#) 2 Switching frequency (Min) (kHz) 1000 Switching frequency (Max) (kHz) 3000 Iq (Typ) (mA) 0.0003 Features Light Load Efficiency, Synchronous Rectification Duty cycle (Max) (%) 90 Operating temperature range (C) -40 to 85 Type Converter Rating Catalog open-in-new Find other Boost converters (integrated switch)

Package | Pins | Size

WSON (DSE) 6 2 mm² 1.5 x 1.5 open-in-new Find other Boost converters (integrated switch)

Features

  • 300 nA Ultra-Low IQ in Low Power mode
  • Startup into Load at 0.7 V Input Voltage
  • Operating Input Voltage from 0.7 V to 4.5 V
  • Selectable Output Voltages Up to 4.3 V
  • Minimum 350 mA Switch Peak Current Limit
  • Integrated LDO/Load Switch
  • Two Modes Controlled by MODE Pin
    • Active Mode: Dual Outputs at Set Values
    • Low Power Mode: LDO/Load Switch Off;
      Boost Keeps On
  • Automatic Pass-Through
  • Up to 88% Efficiency at 10 µA Load from 2 V to
    3.3 V Conversion (Low Power Mode)
  • Up to 93% Efficiency at 5 mA ∼ 100 mA Load
    from 2 V to 3.3 V Conversion
  • 1.5 mm × 1.5 mm WSON Package
open-in-new Find other Boost converters (integrated switch)

Description

The TPS61098x is an ultra low power solution for products powered by either a one-cell or two-cell alkaline, NiCd or NiMH, one-cell coin cell or one-cell Li-Ion or Li-polymer battery. It integrates either a Low-dropout Linear Regulator (LDO) or a load switch with a boost converter and provides two output rails. The boost output V(MAIN) is designed as an always-on supply for a main system, and the LDO or load switch output V(SUB) is to power peripheral devices.

The TPS61098x has two modes controlled by MODE pin: Active mode and Low Power mode. In Active mode, both outputs are enabled with enhanced response performance. In Low Power mode, the LDO or load switch is disabled to disconnect peripherals. The TPS61098x consumes only 300 nA quiescent current and can achieve up to 88% efficiency at 10 µA load in Low Power mode.

The TPS61098x supports automatic pass-through function. When input voltage is higher than a pass-through threshold, the boost converter stops switching and passes the input voltage to VMAIN rail; when input voltage is lower than the threshold, the boost works in boost mode and regulates output at the target value. The TPS61098x provides different versions for different output set values.

The TPS61098x can provide up to 50 mA total output current at 0.7 V input to 3.3 V output conversion. The boost is based on a hysteretic controller topology using synchronous rectifier to obtain maximum efficiency at minimal quiescent current.

The TPS61098x is available in 1.5 mm × 1.5 mm WSON package to enable small circuit layout size.

open-in-new Find other Boost converters (integrated switch)
Download

Technical documentation

= Featured
No results found. Please clear your search and try again. View all 9
Type Title Date
* Datasheet TPS61098x Ultra-Low Quiescent Current Synchronous Boost with Integrated LDO/Load Switch datasheet (Rev. D) Apr. 20, 2016
Application notes Supercap last gasp failsafe power for RF comunications in E-Meters Jan. 27, 2019
Application notes Performing Accurate PFM Mode Efficiency Measurements (Rev. A) Dec. 11, 2018
Selection guides Low-Power DC/DC Converter Overview Guide (Rev. D) Feb. 09, 2017
Selection guides Ultra-Low-Power DC/DC Converters for Battery-Powered and Energy-Harvesting Apps (Rev. B) May 04, 2016
Technical articles How to boost your battery-powered wireless sensor nodes Aug. 04, 2015
User guides TPS610981 Evaluation Module User's Guide Jun. 19, 2015
Application notes Accurately measuring efficiency of ultralow-IQ devices Jan. 22, 2014
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
$49.00
Description

The TPS61098 provides an ultra-low quiescent power supply solution for products powered by either a single cell or two-cell alkaline, one-cell coin cell battery or one-cell Li-Ion or Li-polymer battery. It integrates a load switch or LDO, and can provide two separate output power rails. The main (...)

Features

  • 300 nA ultra-low IQ in Light Load
  • 1.5mm x 1.5mm 6-SON Package
  • Integrated LDO/Load Switch
  • Up to 80% Efficiency at 10 μA Load Current
  • Two Modes Controlled by MODE pin

Design tools & simulation

SIMULATION MODELS Download
SLVMB02A.ZIP (80 KB) - PSpice Model

Reference designs

REFERENCE DESIGNS Download
Supercapacitor backup power supply for E-Meters reference design
PMP30528 — This reference design automatically provides back-up voltages to an E-Meter during a power interruption. While the input voltage is between 10 V to 12 V, two buck controllers (TPS62147, TPS62173) generate 3.9 V at 2 A and 5 V at 150 mA. An optional synchronous boost generates 3.3 V at 50 mA. A (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Advanced Motion Detector Using PIR Sensors Reference Design For False Trigger Avoidance
TIDA-01069 This reference design is an analog front-end for an advanced motion detector based on two PIR sensors for false trigger avoidance, enabling machine learning. This design has a standard BoosterPack™ pinout, uses Texas Instruments low-power components, and runs on one AAA alkaline battery cell.
 
The (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
I3Mote for Industrial Internet of Things Reference Design
TIDA-01452 This reference design introduces a platform called Intelligent Industrial Internet (I3) Mote. The I3Mote is designed as an open and universal hardware platform targeting process/factory automation and building automation connectivity and sensing deployments. By using the most advanced low-power (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Getting Power from Earphone Jack Reference Design
PMP9777 This design is for powering a small system attached to a smartphone audio jack.  The reference design includes a charge pump and a boost converter. The charge pump is used to filter AC input into a DC voltage and the ultra-low quiescent current boost converter TPS610981 is used to generate a (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
WSON (DSE) 6 View options

Ordering & quality

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos

Power Tips: Layout for a Boost Power Stage

This video shows a simplified schematic and PCB layout for a boost converter

Posted: 21-Jan-2016
Duration: 04:31

Related videos