意法半导体的开关LNB电源配有内置式I2C总线接口和DC-DC升压转换器（带有集成式NMOS），单路输入电压为8~15 V，生成的电压使线性后稳压器能够在最小耗散功率下运行。 如果施加的VCC降至固定阈值以下，欠压锁闭电路就会禁用整个电路。 通过I2C总线接口控制主要IC诊断功能。
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