TPS610981

ACTIVE

Low input voltage, 3.3-V output voltage, synchronous boost converter with integrated LDO

Product details

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Boost Type Converter Vin (min) (V) 0.7 Vin (max) (V) 4.5 Switching frequency (min) (kHz) 1000 Switching frequency (max) (kHz) 3000 Features Light Load Efficiency, Synchronous Rectification Vout (min) (V) 3.201 Vout (max) (V) 3.399 Iq (typ) (µA) 0.3 Duty cycle (max) (%) 90 Switch current limit (typ) (A) 0.5
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Boost Type Converter Vin (min) (V) 0.7 Vin (max) (V) 4.5 Switching frequency (min) (kHz) 1000 Switching frequency (max) (kHz) 3000 Features Light Load Efficiency, Synchronous Rectification Vout (min) (V) 3.201 Vout (max) (V) 3.399 Iq (typ) (µA) 0.3 Duty cycle (max) (%) 90 Switch current limit (typ) (A) 0.5
WSON (DSE) 6 2.25 mm² 1.5 x 1.5
  • 300-nA ultra-low IQ in low power mode
  • Start-up 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 to 100-mA load from 2-V to 3.3-V conversion
  • 1.5-mm × 1.5-mm WSON package
  • 300-nA ultra-low IQ in low power mode
  • Start-up 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 to 100-mA load from 2-V to 3.3-V conversion
  • 1.5-mm × 1.5-mm WSON package

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 the 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 the VMAIN rail; when input voltage is lower than the threshold, the boost works in Boost mode and regulates the 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 a 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.

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 the 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 the VMAIN rail; when input voltage is lower than the threshold, the boost works in Boost mode and regulates the 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 a 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.

Download View video with transcript Video

Similar products you might be interested in

open-in-new Compare alternates
Same functionality with different pin-out to the compared device
TPS61099 ACTIVE 0.7Vin Synchronous Boost Converter with 800 nA Ultra-Low Quiescent Current TPS61099 does not have LDO internally
TPS61299 ACTIVE 95nA quiescent current, 5.5V boost converter with input current limit and fast transient performance Lower IQ and higher IOUT

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 6
Type Title Date
* Data sheet TPS61098x Ultra-Low Quiescent Current Synchronous Boost with Integrated LDO/Load Switch datasheet (Rev. F) PDF | HTML 10 Sep 2021
Application brief Supercap last gasp failsafe power for RF comunications in E-Meters 27 Jan 2019
Application note Performing Accurate PFM Mode Efficiency Measurements (Rev. A) 11 Dec 2018
EVM User's guide TPS610981 Evaluation Module User's Guide 19 Jun 2015
Analog Design Journal Accurately measuring efficiency of ultralow-IQ devices 22 Jan 2014
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

TPS610981EVM-674 — TPS610981 Ultra Low Quiescent Current Boost Evaluation Module

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 (...)

User guide: PDF
Not available on TI.com
Simulation model

TPS610981 Unencrypted PSpice Transient Model Package (Rev. A)

SLVMB02A.ZIP (80 KB) - PSpice Model
Reference designs

PMP30528 — Supercapacitor backup power supply for E-Meters reference design

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 (...)
Test report: PDF
Schematic: PDF
Reference designs

TIDA-01069 — Advanced Motion Detector Using PIR Sensors Reference Design For False Trigger Avoidance

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 (...)
Design guide: PDF
Schematic: PDF
Package Pins CAD symbols, footprints & 3D models
WSON (DSE) 6 Ultra Librarian

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
Information included:
  • Fab location
  • Assembly location

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