BD18397EUV-ME2

Overview

The BD18397EUV-ME2 is a two-channel synchronous buck DC/DC LED driver designed for automotive applications. It utilizes an on-time topology for near-fixed switching frequency and average LED current regulation. The device supports a wide input voltage range of 5 V to 45 V and delivers up to 2 A total output current across two channels. Operating frequencies range from 200 kHz to 2.25 MHz, with output voltages adjustable between 2.5 V and 60 V. It features PWM dimming with 1024 steps and integrates thermal shutdown protection.

Feature Summary

• Supports average LED current regulation over a wide input and output range using specific buck topology.
• Integrates Serial Peripheral Interface (SPI) for configuration and monitoring capabilities.
• Includes LIMP-HOME mode functionality to maintain basic operation during fault conditions.
• Complies with ISO 26262 design processes to support ASIL-B functional safety requirements.

Applications

• Automotive exterior lighting systems
• Automotive interior ambient lighting
• High-brightness LED headlamp modules

Procurement Notes

Verify the specific suffix ME2 against the manufacturer's official documentation to confirm package type and tape/reel specifications. Ensure the procurement order matches the required automotive grade qualification standards. Confirm that the intended application environment falls within the specified operating temperature range of -40°C to +125°C. Cross-reference the datasheet for any recent revisions that may impact pin compatibility or electrical characteristics.

Selection Notes

Select this component when designing automotive LED drivers requiring SPI control and high-precision current regulation. The integrated synchronous buck topology reduces external component count compared to asynchronous designs. Consider the 48-pin HTSSOP-C package for thermal management needs in high-power applications. Verify that the system architecture can accommodate the required switching frequency range and dimming resolution.

Part Context

This part belongs to ROHM's automotive-grade LED driver series, specifically engineered for compliance with strict automotive reliability standards. It is part of a family of devices offering various channel counts and topologies for different lighting configurations. The BD18397 variant focuses on dual-channel performance with advanced digital control interfaces.

Replacement Considerations

BD18397RUV-ME2 is a confirmed substitute with identical electrical specifications but housed in a 48-PowerVFSOP package instead of HTSSOP-C. Verify footprint compatibility before substitution.