BD9E100FJ-LBGH2

Overview

The BD9E100FJ-LBGH2 is a synchronous buck DC/DC converter featuring an integrated power MOSFET. It supports an input voltage range of 7.0 V to 36 V and delivers a maximum output current of 1.0 A. The device operates at a switching frequency of up to 1 MHz, enabling the use of compact inductors. It utilizes current-mode control for fast transient response and simplified phase compensation. The component is housed in a SOP-J8 package with dimensions of 4.9 mm x 6.0 mm. It is designed for industrial applications and offers long-term stable supply.

Feature Summary

• Integrates low on-resistance power MOSFETs within a synchronous rectification topology.
• Employs current-mode control architecture to ensure rapid transient response performance.
• Features a wide input voltage capability suitable for generating various low voltages.
• Supports high-speed operation at 1 MHz to facilitate miniaturization via small inductors.

Applications

• Industrial equipment power supplies
• General-purpose low voltage generation from higher bus voltages
• Compact DC/DC conversion systems requiring fast transient response

Procurement Notes

Verify the specific suffix (LBGH2) against the manufacturer's official documentation to confirm pinout, thermal characteristics, and compliance status. Ensure that the SOP-J8 package dimensions and thermal pad requirements align with the target PCB layout. Confirm availability through authorized channels as this product targets long-term industrial supply stability.

Selection Notes

Select this component when an input voltage range between 7 V and 36 V is required with a 1 A output capacity. The 1 MHz switching frequency makes it suitable for designs prioritizing small passive component sizes. Current-mode control is advantageous for applications needing straightforward phase compensation and robust transient handling under varying load conditions.

Part Context

This part belongs to ROHM's series of synchronous buck converters with integrated MOSFETs. It is specifically targeted at the industrial market, emphasizing long-term availability and stability. The device represents a solution for efficient step-down conversion where space constraints and dynamic load performance are critical design factors.

Replacement Considerations

Consult official substitution guides for compatible parts within the same family or alternative manufacturers offering similar 1 A synchronous buck converters with comparable input ranges and package footprints.

FAQ

What control method does the BD9E100FJ-LBGH2 use?

It uses current-mode control, which provides fast transient response and allows for easy phase compensation setting.

Is the power MOSFET external or internal to the IC?

The power MOSFET is internally integrated into the chip, simplifying the external circuit design.