BD61246EFV-E2

Overview

The BD61246EFV-E2 is a multifunction single-phase full-wave fan motor driver IC from ROHM Semiconductor. It integrates an H-bridge power DMOS FET structure into a single chip, reducing external component count. The device operates on a supply voltage range of 4 V to 16 V with a maximum output current of 1.8 A. It supports speed control via DC or PWM inputs and features soft switching capabilities. The IC includes protection functions such as current limit, lock protection with automatic restart, and thermal shutdown. It is housed in a compact HTSSOP-B16 package suitable for surface mount applications.

Feature Summary

• Integrates H-bridge power DMOS FETs for high heat radiation and simplified circuit design
• Supports speed control through both DC and PWM input signals
• Includes advanced protection mechanisms like lock detection, automatic restart, and alarm signal output

Applications

• Personal computer cooling fans
• Video projector ventilation systems
• General purpose single-phase fan motor control

Procurement Notes

Verify the specific suffix E2 against the official ROHM datasheet to confirm pinout and electrical characteristics match the design requirements. Confirm RoHS compliance status directly from the manufacturer's documentation. Ensure the HTSSOP-B16 package dimensions align with the PCB footprint. Check for any obsolescence notices or recommended alternative part numbers if the component is no longer recommended for new designs.

Selection Notes

Select this IC for applications requiring a compact, single-chip solution for single-phase fan motors. It is suitable where space constraints prevent discrete H-bridge implementations. Consider the 1.8 A output capability and 16 V supply limit when matching motor specifications. The integrated protections reduce the need for external monitoring circuits, simplifying the overall system architecture.

Part Context

This component belongs to ROHM's line of motor drivers designed for consumer electronics. It replaces older discrete solutions by integrating power stages and control logic. The BD61246 series is optimized for reliability in thermal management applications. It shares pin compatibility with related models like the BD61245EFV for FG signal output, facilitating design upgrades.

Replacement Considerations

Check ROHM documentation for direct pin-compatible replacements. The BD61246EFV is listed as a predecessor or alias. Verify if newer revisions offer improved thermal performance or updated protection thresholds before substituting.