TPS61253
- 93% Efficiency at 3.5-MHz Operation
- 21-µA Quiescent Current in Standby Mode
- 37-µA Quiescent Current in Normal Operation
- Wide VIN Range From 2.3 V to 5.5 V
- VIN ≥ VOUT Operation
- IOUT ≥ 800 mA at VOUT= 4.5 V, VIN ≥ 2.65 V
- IOUT ≥ 1000 mA at VOUT = 5.0 V, VIN ≥ 3.3 V
- IOUT ≥ 1500 mA (Peak) at VOUT = 5.0 V, VIN ≥ 3.3 V
- ±2% Total DC Voltage Accuracy
- Light-Load PFM Mode
- Selectable Standby Mode or True Load
Disconnect During Shutdown - Thermal Shutdown and Overload Protection
- Only Three Surface-Mount External Components
Required - Total Solution Size < 25 mm2
- 9-Pin NanoFree™ (CSP) Packaging
The TPS6125x device provides a power supply solution for battery-powered portable applications. Intended for low-power applications, the TPS6125x supports up to 800-mA load current from a battery discharged as low as 2.65V and allows the use of low cost chip inductor and capacitors.
With a wide input voltage range of 2.3 V to 5.5 V, the device supports applications powered by Li-Ion batteries with extended voltage range. Different fixed voltage output versions are available from 3.15 V to 5.0 V.
The TPS6125x operates at a regulated 3.5-MHz switching frequency and enters power-save mode operation at light load currents to maintain high efficiency over the entire load current range. The PFM mode extends the battery life by reducing the quiescent current to 37 µA (typ) during light load operation.
In addition, the TPS6125x device can also maintain its output biased at the input voltage level. In this mode, the synchronous rectifier is current limited allowing external load (e.g. audio amplifier) to be powered with a restricted supply. In this mode, the quiescent current is reduced to 21 µA. During shutdown, the load is completely disconnected from the battery. Input current in shutdown mode is less than 1 µA (typ), which maximizes battery life.
The TPS6125x offers a very small solution size due to minimum amount of external components. It allows the use of small inductors and input capacitors to achieve a small solution size.
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 | TPS6125x 3.5-MHz High Efficiency Step-Up Converter In Chip Scale Packaging datasheet (Rev. G) | PDF | HTML | 2016/6/16 | ||
| 應用說明 | Basic Calculation of a Boost Converter's Power Stage (Rev. D) | PDF | HTML | 2022/10/28 | |||
| 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 | ||||
| 技術文章 | Four tips to debug a boost converter | PDF | HTML | 2016/11/29 | |||
| 應用說明 | Calculating and Measuring the No Load Input Current of the Boost Converter | 2016/9/23 | ||||
| 應用說明 | Five Steps to a Good PCB Layout of the Boost Converter | PDF | HTML | 2016/5/3 | |||
| 類比設計期刊 | IQ: What it is, what it isn’t, and how to use it | 2011/6/17 | ||||
| 應用說明 | Minimizing Ringing at the Switch Node of a Boost Converter | 2006/9/15 |
設計與開發
如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。
TPS61253EVM-766 — TPS61253 晶片級升壓 dc-dc 轉換器、3.5-MHz 高效率評估模組
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| DSBGA (YFF) | 9 | Ultra Librarian |
訂購與品質
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。