BD2808MUV-ME2

Overview

The BD2808MUV-ME2 is a 24-channel constant current LED driver IC manufactured by ROHM Semiconductor, designed for automotive applications. It features a boost topology with a maximum output voltage of 20V and supports an input supply voltage range from 3V to 5.5V. Each channel provides a drive current of up to 50mA, totaling 1200mA across all outputs. The device integrates a two-wire serial interface for control and includes built-in PWM dimming capabilities. It operates within a temperature range of -40°C to +105°C and is housed in a compact VQFN-48 package.

Feature Summary

• Integrates three independent groups of 6-bit current DACs for precise RGB color control
• Supports fine grayscale adjustment via 8-bit PWM duty cycle control with analog log curves
• Includes dedicated protection functions such as overheat, overcurrent, and open/short circuit detection

Applications

• Automotive LCD backlight systems
• In-vehicle center panel displays
• Instrument cluster illumination

Procurement Notes

Verify the specific suffix ME2 against the official datasheet to confirm pinout and functional compatibility. Ensure the ordering code matches the required tape and reel quantity. Confirm AEC-Q100 qualification status if the application demands strict automotive reliability standards. Cross-reference the package marking with the manufacturer's identification guide to prevent counterfeit components.

Selection Notes

Select this component when designing high-density LED arrays requiring individual channel current regulation. The integrated boost topology simplifies design for driving series-connected LEDs. Consider the thermal performance of the VQFN-48 package for heat dissipation requirements. Verify that the microcontroller supports the required two-wire serial communication protocol for configuration.

Part Context

This part belongs to the BD2808 family of multi-channel LED drivers optimized for automotive display applications. It complements other PMIC solutions by providing specialized constant current regulation for complex lighting matrices. The device addresses the need for compact form factors while maintaining high brightness uniformity across multiple channels.

Replacement Considerations

Check for BD2808MUV-M variants with different suffixes for packaging differences. Evaluate alternative ROHM models like the BD18333EUV-M for higher voltage or current requirements. Ensure any substitute maintains the same VQFN-48 footprint and pin configuration for direct board replacement.

FAQ

What type of dimming control does the BD2808MUV-ME2 support?

It supports both DC dimming and PWM dimming, allowing for flexible brightness control strategies.

Is the BD2808MUV-ME2 qualified for automotive use?

Yes, it is AEC-Q100 qualified and designed to meet automotive environmental and reliability standards.