BD9479FV-GE2

PMIC - LED Drivers

BD9479FV-GE2 is a member of Renesas Electronics’ BD9x family of LED Drivers. This LED driver is a general-purpose product, which offers both high brightness control, low current consumption, and wide LED current range. This LED Driver can be used over a range of automotive and industrial applications, to control a wide range of LED applications.

Application Field of BD9479FV-GE2

BD9479FV-GE2 is an ideal choice for automotive and industrial applications that require high brightness of LED lighting. Its current range is wide enough to accommodate various types of LEDs, ranging from the smallest to the brightest and from low to high current applications. In the automotive field, this LED Driver is suitable for vehicle exterior lighting, interior lighting, and backlighting. Common applications include automobile headlights, daytime running lights, DRLs, and automotive instrumentation.

The BD9479FV-GE2 is also well suited for industrial applications. It can be used for general purpose industrial lighting and accent lighting for display cases, cabinets, and signage. It can also be used for replacing traditional lighting such as incandescent lamps, fluorescent tubes and halogen lamps. Its flexible current range allows it to power both large and small LEDs, making it suitable for a wide range of industrial lighting solutions.

Working Principle of BD9479FV-GE2

BD9479FV-GE2 is a current-controlled LED driver. The most important components in this LED driver are the current source, the bright/dim control input interface, and the PWM dimming interface. The current source consists of an compensation amplifier that is connected to a linear divider network. This network establishes the reference voltage, which drives the precharge and peak current. The precharge and peak current are then controlled by the brightness/dim control input.

The PWM dimming function allows the LED driver to be dimmed from 0 to 100%, depending on the duty cycle of the PWM dimming signal. The dim control circuit filters the pulse width modulated signal and scales it to the reference voltage to effectively adjust the output current of the LED driver. The BD9479FV-GE2 also uses a protection circuit to protect the LED from damage due to over current.

Finally, the BD9479FV-GE2 is designed for a wide operating temperature range and comes with reverse battery protection, which makes it suitable for a variety of conditions. It is also equipped with an open/short circuit protection, as well as over temperature protection.

The BD9479FV-GE2 is an ideal choice for automotive and industrial applications that require both high brightness and low current consumption. Its wide current range allows it to power a wide range of LED applications, and its protection circuit provides safe operation under a wide range of conditions. The current control, dimming, and protection features of the BD9479FV-GE2 make it an ideal choice for automotive and industrial applications.