TPS62690
- 95% Efficiency at 4MHz Operation
- 19µA Quiescent Current
- 4MHz Regulated Frequency Operation
- High Duty-Cycle Operation
- ±2% Total DC Voltage Accuracy
- Load and Line Transient
- Excellent AC Load Regulation
- Low Ripple Light-Load PFM Mode
- ≥40dB VIN PSRR (1kHz to 10kHz)
- Internal Soft Start, 250-µs Start-Up Time
- Integrated Active Power-Down Sequencing (Optional)
- Current Overload and Thermal Shutdown Protection
- Three Surface-Mount External Components Required
(One 2012 MLCC Inductor, Two 0402 Ceramic Capacitors) - Complete Sub 1-mm Component Profile Solution
- Total Solution Size <12 mm2
- Available in a 6-Pin NanoFree (CSP)
The TPS6269x device is a high-frequency synchronous step-down dc-dc converter optimized for battery-powered portable applications. Intended for low-power applications, the TPS6269x supports up to 600-mA load current, and allows the use of low cost chip inductor and capacitors.
The device is ideal for mobile phones and similar portable applications powered by a single-cell Li-Ion battery. Different fixed voltage output versions are available from 2.2V to 2.9V.
The TPS6269x operates at a regulated 4-MHz switching frequency and enters the 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 19µA (typ) during light load operation. For noise-sensitive applications, the device can be forced into fixed frequency PWM mode by pulling the MODE pin high. This feature, combined with high PSRR and AC load regulation performance, make this device suitable to replace a linear regulator to obtain better power conversion efficiency.
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 | 500-mA/600-mA, 4-MHz High-Efficiency Step-Down Converter datasheet (Rev. B) | 2012/1/9 | |||
| 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 | ||||
| 類比設計期刊 | Understanding 100% mode in low-power DC/DC converters | 2018/6/22 | ||||
| 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 | ||||
| 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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TPS62690EVM-076 — 適用於 TPS62690、500-mA、4-MHz、2.85-Vout 高效率降壓轉換器的評估模組
The TPS6269xEVM-076 is a fully assembled and tested platform for evaluating the performance of the TPS6269x high-frequency, synchronous, step-down, dc-dc converters optimized forbattery-powered portable applications. This user’s guide document includes schematic diagrams, a printed-circuit board (...)
TPS62692EVM-076 — TPS62692EVM-076 高效率 VIN 降壓轉換器評估模組板
Efficiency VIN Step Down Converter Evaluation Module Board
Demonstrate TPS62690/1/2/3 high efficiency VIN step down converter.| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| DSBGA (YFF) | 6 | 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。