Produktbeskrivning
LED Driver 4 click is a form of a high-efficiency boost converter that is ideally suited for driving an array of white LEDs. The driver has the ability to dim the connected LED array, without producing any noise on the output. The Click board is capable of driving a LED array with up to 26V, providing a constant current to the LED segments. The LED segments are connected in series between the output terminals, which results in an even current distribution, thus providing a uniform brightness of each LED. A built-in soft-start function prevents large inrush current. Output open LED circuit, thermal, and undervoltage protection, provide a reliable operation.
LED Driver 4 click is a form of a high-efficiency boost converter that is ideally suited for driving an array of white LEDs. The driver has the ability to dim the connected LED array, without producing any noise on the output. The Click board is capable of driving a LED array with up to 26V, providing a constant current to the LED segments. The LED segments are connected in series between the output terminals, which results in an even current distribution, thus providing a uniform brightness of each LED. A built-in soft-start function prevents large inrush current. Output open LED circuit, thermal, and undervoltage protection, provide a reliable operation.
The choice of the fixed internal switching frequency of the driver IC allows smaller components to be used on the Click board. Apart from a small inductor and a Schottky diode, the driver IC requires only a few more components, such as the small sensing resistor, which determines the current through the LED array. The high switching efficiency, protection features, noiseless output, as well as the small footprint of this device, allow it to be used in various portable and battery powered applications, such as the cellular phones, portable media devices, backlighting for the media form factor displays, backlit keys on the computer keyboard, and similar applications that require a steady and reliable source of dimmable light.
LED Driver 4 click is a form of a high-efficiency boost converter that is ideally suited for driving an array of white LEDs. The driver has the ability to dim the connected LED array, without producing any noise on the output. The Click board is capable of driving a LED array with up to 26V, providing a constant current to the LED segments. The LED segments are connected in series between the output terminals, which results in an even current distribution, thus providing a uniform brightness of each LED. A built-in soft-start function prevents large inrush current. Output open LED circuit, thermal, and undervoltage protection, provide a reliable operation.
The choice of the fixed internal switching frequency of the driver IC allows smaller components to be used on the Click board. Apart from a small inductor and a Schottky diode, the driver IC requires only a few more components, such as the small sensing resistor, which determines the current through the LED array. The high switching efficiency, protection features, noiseless output, as well as the small footprint of this device, allow it to be used in various portable and battery powered applications, such as the cellular phones, portable media devices, backlighting for the media form factor displays, backlit keys on the computer keyboard, and similar applications that require a steady and reliable source of dimmable light.