BD81A76EFV-M - Automotive-Grade Backlight LED Driver Optimized for LCD Panels

18 September 2019 - 0 Comments

ROHM announced the availability of the latestLED driver IC,BD81A76EFV-M, optimized for LCD backlight in instrument cluster, center information displays and car navigation. Unlike conventional drivers with 4 channels that support LCDs up to 8”, this IC provides 6 channels of output (with 120mA per channel) that can support LCD panels of up to 10-12” class. At the same time original buck-boost control ensures compatibility with both small and large LCDs using a single driver. This makes it possible to develop a common design of LCD control board suitable for conventional panels along with the latest large-size displays.

Key Features

1. Original buck-boost control supports a common control board design

BD81A76EFV-M结合了专有的降压控制控制，以在LCD应用中提供更大的应用灵活性。与传统的6通道背光相反，LED驱动器仅利用助推控制。尽管传统的LED驱动程序只能驾驶36至60个LED（6-10 LED/频道），但ROHM的新驱动器IC将6至60个LED范围（1-10 LED/频道）扩展。这样可以确保使用单个驱动程序不仅支持较大的显示器，还可以使用中小型面板的支持，从而有助于控制板的通用设计。

2.班级领先的6CH输出启用与最新12英寸显示器的兼容性

Incorporating a constant current driver with low heat generation enables a best-in-class 6 channels LED current output of 120mA per channel. Unlike conventional 4 channels products that support LCDs up to 8”, ROHM’s new driver can accommodate larger panels in the 10-12” class. In addition, original PWM dimming technology (patent no. 2018-169705) provides a dimming ratio of 10,000:1, improving visibility and greater design flexibility for center information displays and instrument clusters.

3. Low standby current minimizes power consumption

Leveraging analog design expertise and process technologies allowed ROHM to reduce standby current consumption to just 10µA. This reduces power consumption to less than 1/3 compared with functionally equivalent products featuring a standby current of 40µA (typ.).

4.传播频谱功能可确保高可靠性，低噪声操作

In addition to obtaining qualification under the international AEC-Q100 standard for automotive reliability, the BD81A76EFV-M integrates a spread spectrum function as a countermeasure against EMI that allows it to clear CISPR25 noise requirements for vehicle applications. The result is stable operation in automotive systems sensitive to noise.