BD8381EFV-ME2

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The BD8381EFV-ME2 is part of ROHM Semiconductor’s family of LED drivers designed to offer efficient, reliable, and cost-effective lighting solutions for automotive, industrial, consumer, and other applications. This LED driver features Active Brightness Control (ABC) function that registers the ambient brightness and automatically adjusts the output current, which allows for faster on/off time, and supports up to 10 LEDs in series for low system current consumption applications. It cnsists of a p-channel MOSFET and DC/DC converter which provides robust operation and ensured safety.

BD8381EFV-ME2’s application field includes automotive interior and exterior lighting such as low beam headlights, high beam headlights, head-up display (HUD) lamps, instrument panel lamps, glove box lamps, and cargo area lamps. As well as, high-power industrial lighting applications such as boilers, street and sign luminaries, stage lamps, and light boxes. Additionally, the driver can be used in consumer applications like smart lighting, projection systems, TV backlight, and fitness equipment lighting.

The chip’s working principle is centered around the junction between the gate and source pin of the MOSFET. It allows passage of current when it is activated by driving the gate of the MOSFET with a voltage higher than its drain-source voltage. In the BD8381EFV-ME2, the ABC (Active Brightness Control) feature is used to dynamically adjust the LED current depending on the ambient light and optimize LED brightness for optimal visibility and an overall efficient operation. This feature is handled by an analog IC that is connected to the MOSFET gate. With this feature, the LED driver can monitor the light level surrounding it, which allows for faster off/on time, improved brightness, and better efficiency.

The BD8381EFV-ME2 offers a wide input voltage range (3.0V to 28V) and up to 1.2A of output current. The device is highly customizable and can be programmed to accept various voltage thresholds and output current levels. It is also capable of providing simultaneous and distinct output current to multiple channels. The driver also boasts a frequency range from 450kHz to 1.5MHz and is packaged in a compact 4.3mm x 6.0mm MFOP-10L package.

The BD8381EFV-ME2 is an efficient, reliable, and cost-effective LED driver and is suitable for various automotive, industrial, and consumer applications. The device is highly versatile and allows for digital or analog control, and supports up to 10 LEDs in series which enables low system current consumption. It also has a wide input voltage range of 3.0V to 28V and supports up to 1.2A of output current, making it a perfect choice for high-power industrial lighting applications. The device’s ABC feature provides improved brightness, faster off/on time, and improved energy efficiency. Finally, the device is packaged in a small form factor of 4.3mm x 6.0mm MFOP-10L package for easy integration.

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