BD83A24MUF-ME2

Overview

The BD83A24MUF-ME2 is an automotive-grade white LED driver IC designed for LCD backlight applications. It integrates a boost DC/DC converter with built-in MOSFETs and four independent constant current drivers. The device supports an input voltage range of 4.5 V to 48 V, delivering up to 120 mA per channel with a total output current capacity of 480 mA. It features PWM dimming with a ratio of 20,000:1 at 100 Hz and supports analog dimming. The switching frequency reaches 2.42 MHz, and it operates within a temperature range of -40°C to +125°C in a VQFN-24 package.

Feature Summary

• Integrates a current mode boost DC/DC converter with built-in MOSFETs for efficient power conversion.
• Provides four independent constant current channels for driving high-brightness LEDs.
• Supports wide-range PWM dimming up to 20,000:1 and analog dimming capabilities.
• Includes comprehensive protection functions such as UVLO, OVP, TSD, and short circuit detection.

Applications

• Automotive LCD backlighting for instrument clusters
• In-vehicle infotainment system displays
• High-brightness LED drive for medium-sized LCD panels

Procurement Notes

Verify the complete part number including the suffix ME2 to ensure correct packaging and automotive qualification status. Confirm that the VQFN-24 package variant matches your PCB footprint requirements. Check for AEC-Q100 Grade 1 certification compliance if functional safety support is required for your specific application design.

Selection Notes

Select this component when designing automotive display backlights requiring integrated boost conversion and multi-channel current control. It is suitable for applications needing high brightness ranges via combined PWM and analog dimming. Ensure the input voltage supply aligns with the 4.5 V to 48 V operating range and that thermal management supports the specified junction temperature limits.

Part Context

This IC belongs to ROHM's automotive LED driver family, specifically engineered for LCD backlighting in vehicles. It addresses the need for higher efficiency and reliability in modern ADAS and infotainment displays. The integration of the boost converter and current drivers reduces external component count compared to discrete solutions.

Replacement Considerations

The BD83A24MUF-M is the base part number without the specific manufacturing suffix. Verify pin compatibility and electrical specifications before substituting with other models in the BD83A series, such as the BD83A44MUF-ME2 or BD83A14EFV-ME2, ensuring package and channel differences are accounted for.