TPS62698
- 95% Efficiency at 3MHz Operation
- 21 µA Quiescent Current
- 3 MHz Regulated Frequency Operation
- Spread Spectrum, PWM Frequency Dithering
- High Duty-Cycle Operation
- ±2% Total DC Voltage Accuracy
- Load and Line Transient
- Excellent AC Load Regulation
- Low Ripple Light-Load PFM Mode
- ≥40 dB VIN PSRR (1 kHz to 10 kHz)
- Internal Soft Start, 350-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 (CSP)
- Available in a 6-Pin NanoFree (CSP)
The TPS62693 device is a high-frequency synchronous step-down dc-dc converter optimized for battery-powered portable applications. Intended for low-power applications, the TPS62693 supports up to 800-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 output voltage versions are available in the range from 2.2 V up to 3.3 V.
The TPS62693 operates at a regulated 3-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 21 µA (typical) 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.
技術資料
| 上位の文書 | タイプ | タイトル | フォーマットオプション | 最新の英語版をダウンロード | 日付 | |
|---|---|---|---|---|---|---|
| * | データシート | 800-mA, 3-MHz High-Efficiency Step-Down Converter, TPS6269x データシート | 2011/06/16 | |||
| アナログ デザイン ジャーナル | Understanding 100% mode in low-power DC/DC converters | 2018/06/22 | ||||
| アナログ デザイン ジャーナル | Achieving a clean startup by using a DC/DC converter with a precise enable-pin threshold | 2017/10/24 | ||||
| アナログ デザイン ジャーナル | Testing tips for applying external power to supply outputs without an input voltage | 2016/10/24 | ||||
| アナログ デザイン ジャーナル | Five steps to a great PCB layout for a step-down converter | 2015/01/29 |
設計と開発
その他のアイテムや必要なリソースを参照するには、以下のタイトルをクリックして詳細ページをご覧ください。
TPS62692EVM-076 — TPS62692EVM-076 評価モジュール
Efficiency VIN Step Down Converter Evaluation Module Board
Demonstrate TPS62690/1/2/3 high efficiency VIN step down converter.| パッケージ | ピン数 | CAD シンボル、フットプリント、および 3D モデル |
|---|---|---|
| DSBGA (YFD) | 6 | Ultra Librarian |