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.
技术文档
| 顶层文档 | 类型 | 标题 | 格式选项 | 下载最新的英语版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 数据表 | LM2665 Switched Capacitor Voltage Converter 数据表 (Rev. H) | PDF | HTML | 2016-3-22 | ||
| 白皮书 | The Forgotten Converter | 2015-6-15 |
设计与开发
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PMP31404 — 3V 至 42V 同步 GaN 升压转换器参考设计
此参考设计专为高升压系数和高效率而设计。该设计使用带集成氮化镓 (GaN) 场效应晶体管 (FET) 的 LMG5126 升压转换器，可在宽输入电压范围内工作（从 3V 开始）。此参考设计包括展频、电流限制、热关断、过压保护和欠压锁定等功能特性。
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| SOT-23 (DBV) | 6 | Ultra Librarian |
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