TPS62223
- High-Efficiency Synchronous Step-Down Converter With up to 95% Efficiency
- 2.5-V to 6-V Input Voltage Range
- Adjustable Output Voltage Range From 0.7 V to VI
- Fixed Output Voltage Options Available
- Up to 400-mA Output Current
- 1.25-MHz Fixed Frequency PWM Operation
- Highest Efficiency Over Wide Load Current Range Due to Power-Save Mode
- 15 µA Typical Quiescent Current
- Soft Start
- 100% Duty Cycle Low-Dropout Operation
- Dynamic Output-Voltage Positioning
- Available in TSOT23 Package
- APPLICATIONS
- PDAs and Pocket PC
- Cellular Phones, Smart Phones
- OMAP™ and Low Power DSP Supply
- Digital Cameras
- Portable Media Players
- Portable Equipment
- WLAN PC Cards
OMAP, TMS320 are trademarks of Texas Instruments.
The TPS6222x devices are a family of high-efficiency, synchronous step-down converters ideally suited for portable systems powered by 1-cell Li-Ion or 3-cell NiMH/NiCd batteries. The devices are also suitable to operate from a standard 3.3-V or 5-V voltage rail.
With an output voltage range of 6 V down to 0.7 V and up to 400-mA output current, the devices are ideal for powering the low voltage TMS320 DSP family and processors used in PDAs, pocket PCs, and smart phones. Under nominal load current, the devices operate with a fixed switching frequency of typically 1.25 MHz. At light load currents, the part enters the power-save mode operation; the switching frequency is reduced and the quiescent current is typically only 15 µA; therefore, the device achieves the highest efficiency over the entire load current range. The TPS6222x needs only three small external components. Together with the tiny TSOT23 package, a minimum system solution size can be achieved. An advanced fast response voltage mode control scheme achieves superior line and load regulation with small ceramic input and output capacitors.
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 | 400-mA, 1.25-MHz, High-Efficiency, Step-Down Converter in Thin-SOT23 datasheet (Rev. E) | 2009/2/5 | |||
| 應用說明 | Performing Accurate PFM Mode Efficiency Measurements (Rev. A) | 2018/12/11 | ||||
| 類比設計期刊 | Understanding 100% mode in low-power DC/DC converters | 2018/6/22 | ||||
| 應用說明 | Optimizing Transient Response of Internally Compensated DC-DC Converters (Rev. B) | 2017/11/29 | ||||
| 類比設計期刊 | Achieving a clean startup by using a DC/DC converter with a precise enable-pin threshold | 2017/10/24 | ||||
| 應用說明 | Extending the Soft Start Time Without a Soft Start Pin (Rev. B) | 2017/6/15 | ||||
| 類比設計期刊 | Testing tips for applying external power to supply outputs without an input voltage | 2016/10/24 | ||||
| 應用說明 | Basic Calculation of a Buck Converter's Power Stage (Rev. B) | PDF | HTML | 2015/8/17 | |||
| 類比設計期刊 | Five steps to a great PCB layout for a step-down converter | 2015/1/29 | ||||
| 應用說明 | Understanding the Absolute Maximum Ratings of the SW Node (Rev. A) | 2012/1/13 | ||||
| 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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| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| SOT-23-THN (DDC) | 5 | Ultra Librarian |