XCL206C123CR-G

DC-DC converters are electronic circuit components specially designed to convert DC power from one level to another. This is achieved by controlling the magnitude of the voltage output, without changing the frequency or waveform of the input signal. XCL206C123CR-G is a type of DC-DC converter with the following application field and working principle.

The XCL206C123CR-G is a low-power step-down DC/DC converter with a wide input voltage range, 1.2V to 25V. It is designed to drive up to five low-power LEDs connected in series with no additional components needed. Such LED applications typically arise in LCD backlight systems or small automotive lamps.

The XCL206C123CR-G operates on a 180KHz fixed frequency and current-mode architecture for higher efficiency. The converter offers power dip detection and an adjustable PWM leading switching frequency. It also provides an internal low-voltage shutdown to protect the external circuits. Last but not least, it features an externally adjustable lighting dimming range.

The XCL206C123CR-G begins operating once the input is provided with a few simple steps. First, the output voltage is regulated by the built-in low-voltage PWM signal, which is then amplified and converted to current by the current-control section. The current-control section regulates the current by sampling the feedback voltage from the output. The amplified signal is then sent to the low side MOSFET, which controls the current through the LED chain. As a result, the converter maintains the output current prompting the LEDs to reach the desired brightness.

Therefore, with its wide input voltage range, adjustable dimming range and protection features, the XCL206C123CR-G represents an excellent choice for designers of low-power LED applications in LCD backlight systems or small automotive lamps. It provides an efficient step-down DC/DC conversion while keeping the LED brightness adjusted to the desired levels.