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Product Detailed Parameters
- Description：IC REG BUCK ADJ 3A 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)：28.8V
- Current - Output：3A
- Frequency - Switching：300kHz
- 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 BD9E303UEFJ-LBE2 is a synchronous buck DC/DC converter from ROHM Semiconductor, designed for industrial applications. It features an input voltage range of 7V to 36V and delivers a maximum output current of 3A. The device supports adjustable output voltages between 1V and 28.8V with a single output channel. Operating as a current mode control converter, it utilizes a switching frequency up to 345kHz. The component is housed in an 8-pin HTSOP-J package with dimensions of 4.9mm x 3.9mm and a height of 0.85mm. It operates within a junction temperature range of -40°C to 150°C.
Feature Summary
- Integrates low on-resistance power MOSFETs for efficient synchronous rectification
- Provides high-speed transient response capabilities via current mode control
- Includes comprehensive protection mechanisms such as over-current, short circuit, thermal shutdown, and under-voltage lockout
- Features soft start functionality to manage inrush currents during initialization
Applications
- Industrial equipment power supplies
- General purpose low voltage power generation systems
- Embedded systems requiring stable 5.0V or similar rail generation
Procurement Notes
Verify the specific suffix (LB/E2) against the manufacturer's latest Product Change Notice (PCN) documentation before finalizing orders. Ensure that updated specifications align with design requirements despite unchanged electrical characteristics. Confirm availability status as supply conditions may vary for long-term support products intended for industrial markets.
Selection Notes
Select this component when a wide input voltage range up to 36V is required alongside a 3A output capability. The integrated MOSFET design simplifies bill of materials by eliminating external switching devices. Consider the HTSOP-J package constraints for thermal management and PCB layout space. Verify that the 345kHz switching frequency meets electromagnetic interference requirements for the target application environment.
Part Context
This part belongs to the BD9E303EFJ series of synchronous buck converters. It is positioned as a long-term support product specifically targeted at the industrial equipment market. The series emphasizes stability and continuous supply availability for critical infrastructure applications where component obsolescence must be minimized.
Replacement Considerations
BD9E303EFJ-LBE2 is a related variant within the same family. Evaluate pin compatibility and thermal performance differences if substituting. No other direct public substitutes are confirmed in the provided data.
