NCV7683 由八个 100 mA 线性可编程恒定电流源组成。该零部件适用于汽车应用中基于 LED 的 后尾组合灯调节和控制以及闪烁功能。带有 NCV7683 的系统设计可实现两种截止编程水平（100% 占空比）和尾部照明（可编程占空比），还可以实施可选的外部 PWM 控制。 LED 亮度可通过两个外部电阻轻松编程（截止编程为绝对电流值，尾部编程为占空比）。可选外部镇流器 FET 的使用可在需要高电流的设计上实现功率分配。回退功率限制降低了过电压条件下的驱动电流。这对于不使用外部 FET 的低功率应用最有用。 序列功能通过单独的引脚进行激活、控制和编程。除了系列间隔的编程以外，该器件还可以安排 8 个单输出沟道、4 个成对输出沟道、2 个四输出沟道或一次所有 8个沟道的序列（用于高电流下的多个集成电路）。 此器件的增强功能是一款全局启用功能和显示序列。 该器件采用带有裸露焊盘的 SSOP−24 封装。
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Constant Current Outputs for LED String Drive
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Current source drive optimized for LED drive.
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LED Drive Current up to 100mA per Channel
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Flexibility for lower current LEDs.
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Open LED String Diagnostic with Open-Drain Output in All Modes
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Detection of open loads is detected in STOP, TAIL, and Sequence On modes.
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Allows operation in Pre-Regulator Applications.
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External Modulation Capable.
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User defined LED intensity.
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On-Chip 800 Hz Tail PWM Dimming
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Removes PWM feature out of the microprocessor.
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Single Resistor for Stop Current Set Point
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Easily programmable across platforms.
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Single Resistor for Tail Dimming Set Point
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Easily programmable across platforms.
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Overvoltage Set Back Power Limitation
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Allow longer functionality in extended input voltage range..
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AEC-Q100 Qualified and PPAP Capable
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Fits in automotive applications.
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SSOP-24 Fused Lead Package with Exposed Pad
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Thermally enhanced package for higher power operation.
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Eliminated need for inductive bead on Vbat.
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Programmable Latch-Off function on Open String
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Designer flexibility to one off, all off LED turn off feature.
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Overtemperature Fault Reporting
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Noification of unacceptable operational condition.
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Allows sequencing of multiple NCV7683 devices.
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Implements blinker functionality.
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