TPS61261
- Input Voltage Range from 0.8 V to 4.0 V
- Up to 95% Efficiency
- 100 mA Output Current at 3.3 Vout (VIN > 1 V)
- Fixed and Adjustable Output Voltage Options from 1.8 V to 4.0 V
- Programmable Average Output Current from 10 mA to 100 mA
- Adjustable Output Current Limit for Smallest Inductor
- Power Save Mode for Improved Efficiency at Low Output Power
- 29-µA Quiescent Current
- Advanced Softstart
- Quasi Fixed Frequency Operation at 2.5 MHz
- Output Overvoltage Protection
- Load Disconnect During Shutdown
- Undervoltage Lockout
- Available in a 2.00 × 2.00 mm, 6-Pin WSON Package
The TPS6126x devices provide a power supply solution for products powered by either single or dual cell alkaline, NiCd, or NiMH batteries. Its unique advanced softstart makes it also suitable for products powered by high output impedance battery types, like coin cells. Output currents can go as high as 100 mA while using a single cell alkaline battery, and discharge it down to 0.8 V or lower.
The boost converter is based on a quasi fixed frequency, pulse-width-modulation (PWM) controller using synchronous rectification to obtain maximum efficiency. At low load currents, the converter enters Power Save Mode to ensure high efficiency over a wide load current range. The maximum average current in the switches is limited to a programmable value which can go as high as 700 mA. The output voltage is programmable using an external resistor divider, or is fixed internally on the chip. In addition, the average output current can be programmed as well. The converter then regulates the programmed output voltage or the programmed output current, which ever demands lower output power. The converter can be disabled to minimize battery drain. During shutdown, the load is disconnected from the battery. The device is packaged in a 6-pin WSON (DRV) package.
技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | TPS6126x 0.8-V Input Synchronous Boost Converters with 100-mA Output Current datasheet (Rev. C) | PDF | HTML | 2018/4/23 | ||
| 應用說明 | QFN and SON PCB Attachment (Rev. C) | PDF | HTML | 2023/12/6 | |||
| 應用說明 | Performing Accurate PFM Mode Efficiency Measurements (Rev. A) | 2018/12/11 | ||||
| 選擇指南 | Power Management Guide 2018 (Rev. R) | 2018/6/25 | ||||
| 應用說明 | Five Steps to a Good PCB Layout of the Boost Converter | PDF | HTML | 2016/5/3 | |||
| 應用說明 | Design of UVLO for LM27313 (Rev. B) | 2014/4/8 | ||||
| 類比設計期刊 | IQ: What it is, what it isn’t, and how to use it | 2011/6/17 |
設計與開發
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TPS61260EVM-673 — 具有可調整輸出電壓的 TPS61260 小型低輸入電壓升壓轉換器的評估模組
This user’s guide describes the TPS6126x evaluation module (EVM) and how to perform a stand-alone evaluation to allow the EVM to interface with the system and host. The TPS61260EVM-673 converter is programmed from the factory to deliver a 3.3-Vdc output voltage for a continuous load of up to (...)
TPS61261EVM-208 — TPS61261EVM-208 小型低輸入電壓升壓轉換器評估模組板
Tiny Low Input Voltage Boost (Step-Up) Converter Evaluation Module Board - Step Up
This describes the characteristics, operation, and use of the Texas Instruments TPS61261 evaluation module (EVM). This EVM is designed to help the user easily evaluate and test the operation and functionality of the (...)| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| WSON (DRV) | 6 | Ultra Librarian |
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