LM2775
- 2.7-V to 5.5-V Input Range
- Fixed 5-V Output
- 200-mA Output Current
- Inductorless Solution: Only Requires 3 Small
Ceramic Capacitors - Shutdown Disconnects Load from VIN
- Current Limit and Thermal Protection
- 2-MHz Switching Frequency
- PFM Operation During Light Load Currents (PFM
pin tied high)
The LM2775 is a regulated switched-capacitor doubler that produces a low-noise output voltage. The LM2775 can supply up to 200 mA of output current over a 3.1-V to 5.5-V input range, as well as up to 125 mA of output current when the input voltage is as low as 2.7 V. At low output currents, the LM2775 can reduce its quiescent current by operating in a pulse frequency modulation (PFM) mode. PFM mode can be enabled or disabled by driving the PFM pin to high or low. Additionally, when the LM2775 is in shutdown, the user can chose to have the output voltage pulled to GND or left in a high impedance state by setting the OUTDIS pin high or low.
The LM2775 has been placed in TIs 8-pin WSON, a package with excellent thermal properties that keeps the part from overheating under almost all rated operating conditions.
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 | LM2775 Switched Capacitor 5-V Boost Converter datasheet | PDF | HTML | 2015/5/7 | ||
| 應用說明 | How to Meet the HDMI 5V Source Requirement (Rev. C) | 2019/9/26 | ||||
| 技術文章 | Pump it up with charge pumps – Part 1 | PDF | HTML | 2016/2/1 | |||
| 技術文章 | Charge pumps: An often unconsidered method of DC/DC conversion | PDF | HTML | 2015/7/17 | |||
| 技術文章 | Charge pump, inductor-based converter or LDO? | PDF | HTML | 2015/6/19 | |||
| 白皮書 | The Forgotten Converter | 2015/6/15 |
設計與開發
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TIDA-01492 — 整合電源前端和多相位處理器供電車用參考設計
TIDA-01524 — 車用高效率電源前端和多相位處理器供電參考設計
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| WSON (DSG) | 8 | 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。