BD9G401UEFJ-ME2

$2.19

Description：IC REG BUCK ADJ 3.5A 8HTSOP
Series：-
Mfr：Rohm Semiconductor
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:70b9a15ff24b Category: Voltage Regulators - DC DC Switching Regulators Brand: Rohm Semiconductor

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Product introduction

Product Detailed Parameters

Description：IC REG BUCK ADJ 3.5A 8HTSOP
Series：-
Mfr：Rohm Semiconductor
Package：Tape & Reel (TR),Cut Tape (CT)
Function：Step-Down
Output Configuration：Positive
Topology：Buck
Output Type：Adjustable
Number of Outputs：1
Voltage - Input (Min)：4.5V
Voltage - Input (Max)：42V
Voltage - Output (Min/Fixed)：0.8V
Voltage - Output (Max)：42V
Current - Output：3.5A
Frequency - Switching：300kHz
Synchronous Rectifier：No
Operating Temperature：-40°C ~ 105°C
Mounting Type：Surface Mount
Package / Case：8-SOIC (0.154", 3.90mm Width) Exposed Pad
Supplier Device Package：8-HTSOP-JES
Grade：Automotive
Qualification：AEC-Q100

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BD9G401UEFJ-ME2

Overview

The BD9G401UEFJ-ME2 is a single-channel non-synchronous buck switching regulator from ROHM Semiconductor, designed for automotive and industrial applications. It integrates a high-side FET and operates within an input voltage range of 4.5V to 42V, delivering a maximum output current of 3.5A. The adjustable output voltage spans from 0.8V to 42V. Utilizing current-mode control, the device ensures fast load response and simplified phase compensation. It supports external clock synchronization for noise management and functions reliably across an operating temperature range of -40°C to 105°C.

Feature Summary

Integrates a high-side FET in a non-synchronous buck topology with current-mode control for rapid transient response.
Supports external clock synchronization to facilitate system-level noise management.
Features a thermally enhanced HTSOP-J8ES package for efficient heat dissipation.

Applications

Secondary power supplies in automotive systems
Step-down conversion from 12V or 24V sources
Industrial equipment power regulation

Procurement Notes

Verify the specific suffix (ME2) against the manufacturer's latest datasheet to confirm pinout compatibility and RoHS status. Ensure the ordering code matches the required tape-and-reel quantity. Cross-reference the part number with official substitution notices, as production line changes may affect availability without altering technical specifications.

Selection Notes

Select this component when a wide input voltage range up to 42V is required alongside moderate current delivery. The integrated high-side FET reduces external component count compared to discrete solutions. Current-mode control simplifies compensation design, making it suitable for compact layouts where board space is limited.

Part Context

This model belongs to the BD9G401 series of integrated MOSFET DC-DC converters. It serves as a successor or variant to the BD9G401EFJ-M, resulting from manufacturing line changes while maintaining identical electrical characteristics. The series targets robust performance in environments requiring AEC-Q100 compliance and functional safety support.