摘要：尽管允许输入电压的变化，从2.7V到16.5V ，降压/升压转换器控制器为基础的电路调节白光LED电流。Maxim > App Notes > Display Drivers Power-Supply Circuits Keywords: LED drivers, white LEDs, switching converters, buck/boost converters, MOSFET power switches Jun 15, 2005 APPLICATION NOTE 3532 High-Power LED Driver Accepts Wide Input-Voltage Range Abstract:Circuit based on a buck/boost converter controller regulates current to a white LED, despite an allowed variation of input voltage from 2.7V to 16.5V. A similar version of this article appeared as a Design Brief in the January 20, 2005 issue of Electronic Design magazine. The advent of high-power LEDs capable of replacing incandescent bulbs has produced a need for circuits that efficiently match the LEDs to available power sources (batteries, car electrical systems, etc.). The circuits should also be able to r……