Additional Information: Quick View Data Sheet for the MAX1983 Technical Support: Power By configuring a charge-pump voltage doubler as a tripler, you can readily derive 15V from 5V (Figure 1). A 15V rail is useful for powering op amps, LCD-bias circuits, and other low-current applications. The connections shown configure the IC1 voltage doubler as a tripler. The no-load output voltage of the circuit is approximately 3VIN -2VD, where VD is the voltage drop across one diode. Use Schottky diodes as shown to minimize VD and its effect on output voltage. Because the circuit's finite output impedance causes the output voltage to drop with load current (Figure 2), a practical limit for load current is approximately 30mA. Figure 1. This circuit (almost) triples the input voltage for low-current applications. Figure 2. Finite output impedance causes a decline in voltage with increasing load current. A similar version of this article appeared in the August 17, 2000 issue of EDN. 相关型号   APP 297: Aug 17, 2000 MAX1683 开关电容倍压器 完整的数据资料 (PDF, 200kB) 免费样品 自动更新 需要自动接收最新发布的应用笔记吗？请订阅EE-Mail™ (English only)。 我们期待您的反馈！ 喜欢？不喜欢？有待改善？或为我们提供建议？请与我们联系 — 我们将根据您的意见或建议改善我们的工作。 网页评价或提供建议   下载，PDF格式 (26kB)  AN297, AN 297, APP297, Appnote297, Appnote 297