BD9E102FJ-GE2

Overview

The BD9E102FJ-GE2 is a single synchronous buck DC/DC converter manufactured by ROHM Semiconductor. It integrates a power MOSFET and operates within an input voltage range of 7 V to 26 V, delivering a maximum output current of 1 A. The device supports adjustable output voltages from 1 V to 18.2 V with a fixed switching frequency of 570 kHz. Key electrical parameters include a typical quiescent current of 10 uA and an operating supply current of 250 uA. It functions reliably across a junction temperature range of -40°C to +85°C.

Feature Summary

• Integrates a low on-resistance power MOSFET for compact design
• Employs current mode control for fast transient response
• Includes comprehensive protection mechanisms such as over-current, short circuit, and thermal shutdown

Applications

• Industrial equipment power supplies
• General-purpose point-of-load regulation
• Battery-powered devices requiring efficient step-down conversion

Procurement Notes

Verify the specific suffix (e.g., GE2 vs E2) against the manufacturer's latest datasheet to confirm pinout compatibility and electrical specifications. Ensure the ordering code matches the required packaging format, such as tape and reel or cut tape, as availability may vary by distributor. Confirm RoHS compliance status directly with the supplier documentation prior to finalizing procurement orders.

Selection Notes

Select this component when a synchronous buck topology is required for high efficiency at moderate currents. The 570 kHz switching frequency allows for smaller external inductors compared to lower-frequency alternatives. Verify that the input voltage range of 7 V to 26 V aligns with the system power rail. Consider the SOP-J-8 package dimensions for PCB layout constraints and thermal management requirements during the design phase.

Part Context

This part belongs to ROHM's BD9E10x series of integrated synchronous buck converters designed for industrial applications. These components are characterized by long-term supply stability and robust performance in demanding environments. The series typically features integrated power switches to minimize external component count and simplify board space utilization for designers.

Replacement Considerations

Publicly confirmed substitute part numbers for BD9E102FJ-GE2 were not found in the provided source material.