BD7998EFS-E2

Full Half-Bridge (H Bridge) Drivers Overview

The BD7998EFS-E2 is a six-channel power driver integrated circuit manufactured by ROHM Semiconductor, designed for optical disc drive applications. It integrates drivers for spindle motors, SLED actuators, and loading mechanisms within a single silicon monolithic package. The device supports PWM control for spindle and SLED channels to enhance drive efficiency, while employing linear BTL drive systems for actuator and loading channels to minimize operational noise. This configuration allows for compact system design in CD-ROM and DVD-ROM drives.

Full Half-Bridge (H Bridge) Drivers Feature Summary

• Integrates six distinct power driver channels on a single chip for comprehensive optical drive motor control
• Utilizes PWM drive systems for spindle and SLED drivers to achieve high-efficiency operation
• Employs linear BTL drive architecture for actuator and loading drivers to ensure low-noise performance

Full Half-Bridge (H Bridge) Drivers Applications

• Spindle motor control in CD-ROM drives
• SLED (Focus Tracking Error Signal) actuator control in DVD-ROM drives
• Loading mechanism driver implementation in optical disc players

Full Half-Bridge (H Bridge) Drivers Procurement Notes

Verify the specific suffix designation against official ROHM documentation to confirm pinout compatibility and thermal characteristics. Ensure that the E2 variant aligns with current manufacturing specifications and environmental compliance requirements before finalizing component selection for production.

Full Half-Bridge (H Bridge) Drivers Selection Notes

Select this component when designing optical storage systems requiring integrated control for multiple motor types. Evaluate the thermal dissipation capabilities of the HTSSOP-B44 package relative to the expected power load. Confirm that the linear BTL output characteristics meet the acoustic noise requirements of the target application.

Full Half-Bridge (H Bridge) Drivers Part Context

This part belongs to the BD79xx series of power drivers developed specifically for optical disc technology. It consolidates functions previously handled by discrete components or multiple ICs, reducing board space and assembly complexity. The series is characterized by robust protection features suitable for precision mechanical actuation in consumer electronics.

Full Half-Bridge (H Bridge) Drivers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.