BD9G201UEFJ-ME2

Overview

The BD9G201UEFJ-ME2 is a single-channel integrated MOSFET buck converter manufactured by ROHM Semiconductor. It operates within an input voltage range of 4.5 V to 42 V and provides a regulated output voltage adjustable from 800 mV to 42 V. The device supports a maximum output current of 1.5 A with one output channel. Key electrical specifications include a typical static current of 10 uA, a fixed switching frequency of 300 kHz, and a quiescent operating current of 1.2 mA. It functions reliably across an extended temperature range from -40°C to +105°C.

Feature Summary

• Integrates high-side FET for compact design
• Supports external clock synchronization for noise management
• Includes shutdown control functionality

Applications

• Secondary power supplies in automotive systems
• Step-down conversion from 12V or 24V sources
• Generation of 3.3V or 5V logic rails

Procurement Notes

Verify the specific suffix ME2 against the official datasheet to confirm pinout and thermal characteristics. Ensure the ordering code matches the required tape-and-reel quantity of 2500 units if bulk procurement is intended. Confirm RoHS compliance status through the manufacturer's latest documentation before finalizing supply chain agreements.

Selection Notes

Select this component when a wide input voltage range up to 42 V is required alongside moderate current delivery. The fixed 300 kHz frequency simplifies compensation network design compared to variable frequency alternatives. Consider the HTSOP-J8 package dimensions for PCB layout constraints and verify that the 1.5 A continuous current rating meets the peak load requirements of the target application circuit.

Part Context

This part belongs to the BD9G series of integrated MOSFET buck converters designed for automotive and industrial applications. It utilizes current mode control to achieve fast transient response and simplified phase compensation. The device is optimized for small secondary power supply applications where space efficiency and robust performance under varying line conditions are critical priorities.

Replacement Considerations

The BD9G201EFJ-ME2 is documented as a production line change equivalent with identical technical specifications. Verify compatibility using the official substitution guidelines provided by ROHM Semiconductor.