BD81A76EFV-ME2

Overview

The BD81A76EFV-ME2 is a six-channel white LED driver IC designed for automotive applications. It integrates a buck-boost current mode DC/DC converter to maintain stable operation despite power supply voltage fluctuations. The device supports an input voltage range of 4.5 V to 35 V and delivers a maximum total output current of 720 mA, with up to 120 mA per channel. It features PWM dimming control with a ratio of 10,000:1 at 100 Hz. The switching frequency is adjustable from 200 kHz to 2.2 MHz and can be synchronized externally. Qualified under AEC-Q100 Grade 1, it operates within a temperature range of -40°C to +125°C in a 30-pin HTSSOP-B package.

Feature Summary

• Integrates a buck-boost current mode DC/DC converter for stable LED drive across varying input voltages.
• Supports high-ratio PWM dimming control for precise brightness adjustment.
• Includes comprehensive protection mechanisms such as overvoltage, overcurrent, thermal shutdown, and open/short detection.
• Features spread spectrum functionality to reduce electromagnetic interference.

Applications

• Automotive exterior lighting systems
• Automotive interior ambient lighting
• High-brightness LED backlighting

Procurement Notes

Verify the specific suffix ME2 against the manufacturer's datasheet to confirm pinout and packaging details. Ensure the design supports the required thermal dissipation for the HTSSOP-B-30 package. Confirm that the external components selected for the buck-boost topology meet the specified voltage and current ratings. Check for functional safety support documentation if required for the target automotive application.

Selection Notes

Select this component when a single IC must drive multiple high-brightness LEDs with independent channel control. It is suitable for designs requiring wide input voltage tolerance and high efficiency. Consider the external synchronization feature if noise immunity is critical. Verify that the required dimming ratio and switching frequency align with system constraints.

Part Context

This part belongs to ROHM's automotive-grade LED driver family, specifically designed for high-reliability lighting applications. It complements other models like the BD81A74EFV-ME2, which offers four channels. The series emphasizes functional safety support and robust protection features for demanding automotive environments.

Replacement Considerations

The BD81A76EFV-M is the non-suffix variant of this component. Verify pin compatibility and electrical specifications before substitution. Other channel counts in the same family may require schematic adjustments.