LM2665
- Input Voltage for Voltage Doubler: 2.5 V to 5.5 V
- Voltage Divider Splits Voltage: 1.8 V to 11 V
- Doubles or Splits Input Supply Voltage
- 12-Ω Typical Output Impedance
- 90% Typical Conversion Efficiency at 40 mA
- 1-µA Typical Shutdown Current
The LM2665 CMOS charge-pump voltage converter operates as a voltage doubler for an input voltage in the range of 2.5 V to 5.5 V. Two low-cost capacitors and a diode (needed during start-up) are used in this circuit to provide up to 40 mA of output current. The LM2665 can also work as a voltage divider to split a voltage in the range of 1.8 V to 11 V in half.
The LM2665 operates at 160-kHz oscillator frequency to reduce output resistance and
voltage ripple. With an operating current of only 650 µA (operating efficiency greater than 90%
with most loads) and
1-µA typical shutdown current, the LM2665 provides ideal performance for battery powered
systems.
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 | LM2665 Switched Capacitor Voltage Converter datasheet (Rev. H) | PDF | HTML | 2016/3/22 | ||
| 白皮書 | The Forgotten Converter | 2015/6/15 |
設計與開發
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PMP31404 — 3V 至 42V 同步 GaN 升壓轉換器參考設計
這款參考設計旨在實現高升壓比與高效率。這款設計可在寬廣的輸入電壓範圍內運作，最低輸入電壓為 3V，此電壓由內建氮化鎵 (GaN) 場效電晶體 (FET) 的 LMG5126 升壓轉換器提供。這款參考設計具備多項功能，例如展頻、電流限制、過熱自動開機、過電壓保護及欠壓鎖定。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| SOT-23 (DBV) | 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。