RT8452 高电压大电流 LED 驱动器
控制器的升压配置中的典型应用模拟调光,适用于降压-升压或降压-升压拓扑。 RT8452 是一款电流模式 PWM 控制器,设计用于驱动大电流 LED 应用的外部 MOSFET。 LED 电流的
电流检测放大器阈值为 190mV,可通过一个外部电流检测
电阻器进行编程。 RT8452 的最大工作输入电压为 36V,输出电压高达 48V,非常适合降压、升压或降压-升压操作
说明
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Typical Application Analog Dimming in Boost Configuration for RT8452 High Voltage High Current LED Driver Controller for Buck-Boost or Buck-Boost Topology. The RT8452 is a current mode PWM controller designed to drive an external MOSFET for high current LED applications. With a current sense amplifier threshold of 190mV, the LED current is programmable with one external current sense resistor. With the maximum operating input voltage of 36V and output voltage up to 48V, the RT8452 is ideal for Buck, Boost or Buck-Boost operation