资料介绍
摘要： PDA，手机，数码相机，以及其他便携式设备中常见的WLED背光。本应用笔记介绍了一种开关模式升压设计，其中显示器背光长时间。其转换效率，在有限的电阻和线性调节的设计提供了一个省电的优点。
Maxim > Design support > App notes > Display Drivers > APP 1871
Keywords: LED, backlight, keypad, display, switch mode
Feb 03, 2003
APPLICATION NOTE 1871
Single FET Controls 2nd LED Array in Switch-Mode LED Backlight
By: Len Sherman
Abstract: WLED backlights are common in PDAs, cell phones, digital cameras, and other portable devices. This application note
describes a switch-mode boost design in which the display is backlit for extended periods of time. Its conversion efficiency provides
a power-saving advantage over resistor-limited and linearly regulated designs.
A similar version of this article appeared in the April 12, 2001 issue of EDN magazine.
White-LED b
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