BD9E300EFJ-LBE2

Overview

The BD9E300EFJ-LBE2 is a synchronous buck DC/DC converter from ROHM, designed for industrial applications. It features an input voltage range of 7V to 36V and delivers a maximum output current of 2.5A. The device offers an adjustable output voltage between 1V and 28.8V with a single output channel. Operating at a switching frequency up to 1MHz, it utilizes current-mode control for fast transient response. The component is housed in an 8-pin HTSOP-J package with dimensions of 4.9mm x 3.9mm x 0.85mm and supports a junction temperature range from -40°C to 150°C.

Feature Summary

• Integrates low on-resistance power MOSFETs within a synchronous rectification topology to enhance efficiency and reduce external component count.
• Employs current-mode control architecture to ensure rapid transient response performance and simplified phase compensation setup.
• Supports high-speed operation suitable for miniaturization through the use of compact inductors.

Applications

• Industrial equipment power supplies
• General-purpose DC/DC conversion systems
• Low voltage generation from higher input rails

Procurement Notes

Verify the specific suffix (LBE2) against the manufacturer's latest documentation to confirm pinout and electrical specifications match the design requirements. Check for any Product Change Notices (PCN) that may update mechanical or material specifications without altering electrical characteristics. Ensure compatibility with RoHS standards if required by the target market regulations.

Selection Notes

Select this component when a wide input voltage range up to 36V is required alongside moderate current delivery. The integrated MOSFET design simplifies layout compared to discrete solutions. Consider the thermal performance within the HTSOP-J package for the expected load conditions. Verify that the 1MHz switching frequency aligns with electromagnetic interference constraints and available passive component sizes.

Part Context

This part belongs to the BD9E300 series of synchronous buck converters from ROHM Semiconductor. The series is targeted at industrial markets with a focus on long-term supply stability. The BD9E300EFJ-LBE2 variant specifically integrates the controller and power FETs into a compact surface-mount package, distinguishing it from controller-only alternatives in the broader portfolio.

Replacement Considerations

Consult official substitution lists for direct replacements. Generic equivalents may differ in thermal resistance or internal MOSFET characteristics.