TPS610981
- 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.
技術文件
| 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 | ||
| 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 |
設計與開發
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| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| WSON (DSE) | 6 | Ultra Librarian |
訂購與品質
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 認證摘要
- 進行中持續性的可靠性監測
- 晶圓廠位置
- 組裝地點
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。