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Product Detailed Parameters
- Description：IC REG BUCK ADJ 2.5A 8HTSOP-J
- 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)：7V
- Voltage - Input (Max)：36V
- Voltage - Output (Min/Fixed)：1V
- Voltage - Output (Max)：25.2V
- Current - Output：2.5A
- Frequency - Switching：1MHz
- Synchronous Rectifier：Yes
- Operating Temperature：-40°C ~ 150°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Supplier Device Package：8-HTSOP-J
- Grade：-
- Qualification：-
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Overview
The BD9E300UEFJ-LBE2 is a synchronous buck DC/DC converter from ROHM Semiconductor, designed for industrial applications. It integrates a power MOSFET and controller in an HTSOP-J8 package. The device supports an input voltage range of 7.0V to 36V and delivers up to 2.5A output current. It operates with a fixed switching frequency of 1MHz, enabling the use of small inductors. The output voltage is adjustable from 1V to 25.2V. It features current mode control for fast transient response and includes protection functions such as overcurrent protection and thermal shutdown. The operating junction temperature range extends from -40°C to +150°C.
Feature Summary
- Integrates low on-resistance power MOSFETs for high efficiency in a compact surface-mount package.
- Utilizes current mode control architecture to ensure rapid transient response and simplified phase compensation.
- Supports high-frequency operation at 1MHz, allowing for the use of miniature external components.
Applications
- Industrial equipment power supplies
- General-purpose DC-DC conversion for embedded systems
- Low-voltage generation from higher bus voltages
Procurement Notes
Verify the exact part number suffix against official ROHM documentation, as variations may exist. Confirm RoHS compliance status and lead times directly with authorized distributors or the manufacturer. Ensure the ordering quantity matches the specified tape and reel packaging requirements. Cross-reference the datasheet revision date to guarantee compatibility with your design specifications.
Selection Notes
Select this component when a robust, high-current synchronous buck converter is required for industrial environments. The wide input voltage range accommodates various supply rails, while the 1MHz frequency minimizes passive component size. Consider the thermal performance and heat dissipation requirements due to the integrated MOSFET design and high operating temperature rating.
Part Context
This part belongs to the BD9E300 series of integrated MOSFET DC-DC buck converters. The series is characterized by its constant on-time control method, which provides fast transient response and low light-load consumption. These devices are specifically targeted at industrial markets where long-term stability and reliability are critical.
Replacement Considerations
Check for direct pin-to-pin replacements within the same ROHM family, such as variants with different current ratings or frequencies. Verify that any substitute maintains the 7V-36V input range and 2.5A output capability. Ensure the replacement package remains HTSOP-J8 for mechanical compatibility.
