RT8482应用电路(高电压高电流LED驱动器控制器)

The RT8482 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 a maximum operating input voltage of 36V and output voltage up to 48V, the RT8482 is ideal for buck, boost or buck-boost operation.

Note :

SOP-16

Figure 1. Analog Dimming in Boost Configuration

Figure 2. PWM to Analog Dimming in Boost Configuration

Figure 3. Analog Dimming in Buck-Boost Configuration

Figure 4. Analog Dimming in Buck Configuration