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AC/DC 和 DC/DC 轉換器 (整合式 FET)

TPS610981

現行

具備整合式 LDO 的低輸入電壓、3.3-V 輸出電壓同步升壓轉換器

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產品規格表

TPS610981

現行
產品規格表 立即訂購

產品詳細資料

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.
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類型 標題 日期
* Data sheet TPS61098x Ultra-Low Quiescent Current Synchronous Boost with Integrated LDO/Load Switch datasheet (Rev. F) PDF | HTML 2021年 9月 10日
Application brief Supercap last gasp failsafe power for RF comunications in E-Meters 2019年 1月 27日
Application note Performing Accurate PFM Mode Efficiency Measurements (Rev. A) 2018年 12月 11日
EVM User's guide TPS610981 Evaluation Module User's Guide 2015年 6月 19日
Analog Design Journal Accurately measuring efficiency of ultralow-IQ devices 2014年 1月 22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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開發板

TPS610981EVM-674 — TPS610981 超低靜態電流升壓評估模組

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 (...)

使用指南: PDF
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TPS610981 Unencrypted PSpice Transient Model Package (Rev. A)

SLVMB02A.ZIP (80 KB) - PSpice Model
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參考設計

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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
電路圖: PDF
參考設計

TIDA-01069 — 使用 PIR 感測器避免誤觸發的進階動作偵測器參考設計

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
電路圖: PDF
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