以前用过TL494，但是494不带PWM调光功能，因此PASS
我们公司代理各种液晶屏，所以要求驱动的芯片尽可能的通用
要求，输入电压7-18V（一般为12V）
输出电压9-60V
输出电流可达到1A
要求可以PWM调光，要SOP封装，容易采购到，温度-40到125
我也主要是 该怎么搜
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