调节液晶偏压发生器无需电感器

摘要：这样的设计理念，展示了如何规范的LCD偏压发生器无需电感。基于MAX868稳压，反相电荷泵电荷泵的设计取代了开关模式设计，以产生一个负电压偏置的LCD 。负，反相电荷泵的反馈路径中几个组件生产逆变器四倍频电路。

Maxim > App Notes > Display Drivers
Keywords: switch-mode power supply, charge pump, regulated charge pump, inverting charge pump, regulated negative voltage, inverter Dec 17, 2001
quadrupler, personal digital assistant, PDA

APPLICATION NOTE 239
Regulated LCD-Bias Generator Requires No Inductor


Abstract:This design idea shows how a regulated LCD bias generator requires no inductor. A charge-pump design based on the
MAX868 regulated, inverting charge pump replaces a switch-mode design to generate a negative voltage for biasing an LCD. A
few components in the feedback path of a negative, inverting charge pump produce an inverter-quadrupler circuit.

A similar idea appeared in the March 9, 1998 issue of Electronic Design .

A stringent height limitation on