用于 20kHz PWM 调光的 LT3755EUD-1 降压模式 500mA LED 驱动器的典型应用电路。 LT3755-1 是一款
DC/DC 控制器,设计用作驱动高电流 LED 的恒流源。它通过内部 7.15V
稳压电源驱动低侧外部 N 沟道功率 MOSFET。固定频率、电流模式架构可在较宽的电源和输出电压范围内稳定运行
说明
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Typical Application Circuit for LT3755EUD-1 Buck Mode 500mA LED Driver for 20kHz PWM Dimming. The LT3755-1 is a DC/DC controller designed to operate as a constant-current source for driving high current LEDs. It drives a low side external N-channel power MOSFET from an internal regulated 7.15V supply. The fixed frequency, current mode architecture results in stable operation over a wide range of supply and output voltages