BD83740HFP-MTR

Overview

The BD83740HFP-MTR is a single-channel automotive LED source driver IC from ROHM Semiconductor, designed for high-reliability applications. It supports an input voltage range of 4.5V to 42V and delivers a maximum constant output current of 500mA per channel. The device operates within a temperature range of -40°C to +125°C and features PWM dimming capabilities with an integrated CR timer. Packaged in the HRP-7 format (9.395x10.54mm), it meets AEC-Q100 automotive standards and includes built-in protection mechanisms such as overvoltage mute, thermal shutdown, and LED open detection.

Feature Summary

• Supports PWM dimming with an integrated CR timer for simplified external component requirements
• Includes PBUS functionality for unified OFF control across multiple LEDs when an open circuit occurs in any column
• Integrates comprehensive protection features including overvoltage mute, temperature protection, and abnormal output detection

Applications

• Automotive exterior lighting systems requiring high-voltage tolerance
• Interior ambient lighting circuits needing precise constant current regulation
• Multi-column LED arrays utilizing PBUS fault management

Procurement Notes

Verify the specific suffix against official documentation, as Product Change Notices may update specifications without altering electrical characteristics. Confirm package type and RoHS compliance status directly with the manufacturer or authorized distributors before finalizing procurement orders to ensure alignment with current production standards.

Selection Notes

Select this component for designs requiring a single-channel high-voltage LED driver with integrated safety features. Ensure the application input voltage remains within the 4.5V to 42V range. Consider the HRP-7 package dimensions for PCB layout constraints. Verify that the required dimming frequency falls within the operational limits supported by the internal CR timer configuration.

Part Context

This part belongs to ROHM's automotive-grade LED driver series, specifically engineered for robust performance in vehicle environments. It complements other components in the power management portfolio by providing dedicated source drive capabilities. The inclusion of functional safety support categories indicates its suitability for systems requiring rigorous reliability analysis and compliance with automotive industry standards.

Replacement Considerations

Consult official substitution lists for pin-compatible alternatives. No direct public substitute part numbers are confirmed in the provided data.