NCL30188ADR2G

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NCL30188ADR2G LED drivers are used as LED string drivers in general LED lighting applications. Typically, a NCL30188/ADR2G LED driver consists of three stages: an LED pre-regulator, an LED pre-driver, and an LED driver stage.

The LED pre-regulator steps down a voltage applied to the driver, ranging from 14 V to 32 V, to the 12 V level. This 12 V output is then used to power the LED pre-driver stage and LED driver stage.

The LED pre-driver stage turns on and off the LED string current in response to the LED0 pin voltage, varying the LED string current between 250 mA to 60 mA (in steps of 6 mA). When the LED0 voltage reaches a threshold of 0.7 V, the LED pre-driver turns on the LED string current and when it reaches 1.3 V, the LED pre-driver turns off the LED current.

The LED driver stage sense the LED current flowing through the LED string and controls the LED current by PWM inside the switching frequency range of 1 kHz to 30 kHz for optimized efficiency and dimming quality. The dimming ratios are adjustable from a 1%:99% ratio to a 99% to 1%:99% ratio for maximum dimming flexibility.

NCL30188ADR2G LED drivers are used in a wide range of lighting applications, including residential, commercial and architectural lighting, as well as automotive interior and exterior lighting. They deliver excellent efficacy, flicker-free operation, and complete dimming flexibility, making them the ideal choice for LED lighting applications.

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