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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)：12V
- Voltage - Input (Max)：76V
- Voltage - Output (Min/Fixed)：1V
- Voltage - Output (Max)：76V
- Current - Output：3A
- Frequency - Switching：50kHz ~ 750kHz
- Synchronous Rectifier：No
- Operating Temperature：-40°C ~ 85°C (TA)
- 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 BD9G341AEFJ-LBE2 is a non-synchronous buck switching voltage regulator from ROHM Semiconductor, designed for industrial applications. It features an integrated N-channel power MOSFET rated at 80V withstand voltage and 3.5A current capacity with a 150mΩ on-resistance. The device supports a wide input voltage range of 12V to 76V and provides an adjustable output voltage from 1V to 76V. It delivers a maximum continuous output current of 3A. The switching frequency is programmable between 50kHz and 750kHz. It operates within a temperature range of -40°C to 85°C and is housed in an 8-pin HTSOP-J package.
Feature Summary
- Integrates an 80V/3.5A N-channel power MOSFET with low on-resistance for high-efficiency step-down conversion.
- Utilizes current-mode control architecture to achieve fast transient response and simplified phase compensation.
- Offers flexible switching frequency adjustment from 50kHz to 750kHz to optimize design trade-offs.
- Includes comprehensive protection mechanisms such as over-current protection, under-voltage lockout, thermal shutdown, and over-voltage protection.
Applications
- Industrial equipment power supplies requiring high input voltage tolerance
- Systems needing long-term stable supply for critical components
- Applications demanding low standby current and efficient power management
Procurement Notes
Verify the specific suffix LBE2 against the official datasheet to confirm tape-and-reel packaging specifications and quantity per reel. Ensure compatibility with existing PCB footprints for the HTSOP-J8 package. Cross-reference thermal requirements with system constraints given the bare pad thermal enhancement. Confirm that the non-synchronous topology aligns with efficiency targets compared to synchronous alternatives.
Selection Notes
Select this component when designing systems with input voltages up to 76V, which exceeds standard 40V or 60V converter limits. The integrated 80V MOSFET eliminates external high-voltage switch requirements. Consider the non-synchronous design for cost-sensitive applications where peak efficiency at light loads is prioritized over heavy-load performance. Verify that the 3A output current meets load demands without excessive derating.
Part Context
This part belongs to the BD9G series of ultra-high-efficiency DC/DC buck converters from ROHM. These regulators are specifically engineered for industrial markets, emphasizing long-term availability and robustness. The series integrates power MOSFETs to reduce component count and board space while maintaining high reliability under harsh operating conditions typical in industrial environments.
Replacement Considerations
The BD9G341AEFJ-E2 is documented as a parameter-equivalent alternative. Verify pinout compatibility and electrical characteristics before substitution. No other direct substitutes are confirmed in the provided documentation.
