IS31LT3135-V1GRLS2-EB，基于 IS31LT3135V1 双通道的评估板。 (主/副) LED 驱动器

使用 Integrated Silicon Solution Inc 的 IS31LT3135 的参考设计

设计简介

IS31LT3135-V1GRLS2-EB，IS31LT3135V1 的评估板是一款双通道 LED 驱动器。它可以充当主通道驱动器或子通道源。当在主模式下工作时，该器件充当恒流源，通过外部电阻器通过主 LED 输出可调电流。该器件可在驱动 200mA 电流时以 0.1V 的压差电压运行。当作为子通道驱动器运行时，IC 将 LED 的阴极接地。该器件通常在单通道通电的情况下运行，允许在主通道模式和子通道模式之间快速切换。在高电压和低电压之间工作的扫描电源允许在子通道/主通道模式之间进行简单切换，即使在 UV 引脚低于 IS31LT3135-V1 的 1.17V UV 阈值的情况下也是如此

说明

IS31LT3135-V1GRLS2-EB, Evaluation Board for the IS31LT3135V1 is a dual-channel LED driver. It can function as the main-channel driver or as a sub-channel source. When operating in main mode, the device functions as a constant current source that outputs an adjustable current, via an external resistor, through the main LED. The device is operable with a dropout voltage of 0.1V while driving a 200mA current. When operating as a sub-channel driver, the IC grounds the LED's cathode. The device normally operates with a single channel powered on, allowing for quick switching between the main and sub channel modes. A sweeping power supply that operates between high and low voltages, allows for simple switching between sub/main-channel modes, even during conditions where the UV pin is below the 1.17V UV threshold for IS31LT3135-V1