BD7905BFS-E2

Full Half-Bridge (H Bridge) Drivers Overview

The BD7905BFS-E2 is a six-channel power driver manufactured by ROHM Semiconductor, designed for optical disc drive applications such as CD-ROM and DVD-ROM units. It operates within a supply voltage range of 4.3 V to 14 V and supports output currents of 800 mA and 2.5 A per channel. The device features logic interfaces and half-bridge output configurations suitable for inductive loads. It includes built-in fault protection mechanisms, specifically current limiting and overtemperature shutdown. The component is housed in a 54-pin SSOP package with exposed pads and functions reliably across an operating temperature range of -40°C to +85°C.

Full Half-Bridge (H Bridge) Drivers Feature Summary

• Six-channel integrated power driver architecture optimized for optical storage actuators
• Integrated thermal and current protection circuits for enhanced system reliability
• Logic-compatible input interface simplifying control signal integration

Full Half-Bridge (H Bridge) Drivers Applications

• CD-ROM drive actuator control
• DVD-ROM drive spindle and focus/sled motor driving
• Optical disc drive mechanism power management

Full Half-Bridge (H Bridge) Drivers Procurement Notes

Verify the specific suffix E2 against the original design specification to ensure compliance with RoHS directives and lead-free manufacturing requirements. Confirm that the 54-SSOP package dimensions match the PCB footprint exactly. Check for obsolescence status, as multiple sources indicate this part may be discontinued or restricted in certain regions. Ensure the supplier provides valid traceability documentation for quality assurance purposes.

Full Half-Bridge (H Bridge) Drivers Selection Notes

Select this component when designing multi-axis control systems for optical drives requiring integrated power stages. The high channel count reduces bill-of-materials complexity compared to discrete solutions. Verify that the load inductance and current demands fall within the specified 800 mA and 2.5 A limits. Consider the thermal performance of the exposed pad package if operating near the upper temperature limit.

Full Half-Bridge (H Bridge) Drivers Part Context

This part belongs to ROHM's dedicated power driver family for consumer electronics, specifically targeting precision motion control in media players. It integrates multiple half-bridge outputs into a single compact package, replacing older discrete transistor arrays. The design focuses on minimizing board space while providing robust protection for sensitive optical pickup assemblies.

Full Half-Bridge (H Bridge) Drivers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided data. Consult ROHM official documentation for direct pin-to-pin replacements or functional equivalents.