BD9E303EFJ-LBH2

Overview

The BD9E303EFJ-LBH2 is a synchronous buck DC/DC converter from ROHM, designed for industrial applications. It features an input voltage range of 7.0V to 36V and delivers a maximum output current of 3A. The adjustable output voltage spans from 1V to 28.8V. Operating with a maximum switching frequency of 345kHz, the device integrates power MOSFETs within an 8-pin HTSOP-J package. It supports a junction temperature range from -40°C to 150°C and includes protection mechanisms such as over-current, short-circuit, thermal shutdown, and under-voltage lockout.

Feature Summary

• Integrates low on-resistance power MOSFETs for high efficiency in a synchronous rectification topology.
• Utilizes current mode control architecture to achieve fast transient response performance.
• Provides comprehensive protection including over-current, short-circuit, thermal shutdown, and under-voltage lockout.
• Designed for long-term stable supply support specifically targeting industrial equipment markets.

Applications

• Industrial equipment power systems
• General purpose DC/DC conversion requiring wide input ranges
• Low voltage generation from higher bus voltages

Procurement Notes

Verify the specific suffix against official documentation, as ordering codes may indicate variations in packaging or tape-and-reel specifications. Confirm RoHS compliance status and check for any pending Product Change Notices (PCN) that might update specifications without altering electrical characteristics. Ensure the selected variant matches the required HTSOP-J package dimensions and exposure pad requirements for thermal management.

Selection Notes

Select this component when a wide input voltage range up to 36V is required alongside a 3A output capability. The integrated MOSFET design simplifies external component selection compared to discrete solutions. Consider the 345kHz switching frequency for balancing size and efficiency. The -40°C to 150°C operating range makes it suitable for harsh industrial environments where standard consumer-grade parts would fail.

Part Context

This part belongs to the BD9E303EFJ series of synchronous buck converters from ROHM Semiconductor. The series is characterized by its integration of power FETs and current-mode control, targeting robust performance in industrial settings. It shares architectural similarities with other BD9x series devices but is distinct in its specific voltage and current ratings tailored for mid-power industrial applications.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Users should consult official ROHM documentation or authorized distributors for cross-reference information regarding equivalent components with similar electrical specifications and package footprints.