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Product Detailed Parameters
- Description：IC REG BUCK ADJ 3.5A 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)：4.5V
- Voltage - Input (Max)：42V
- Voltage - Output (Min/Fixed)：0.8V
- Voltage - Output (Max)：42V
- Current - Output：3.5A
- Frequency - Switching：250kHz ~ 500kHz
- Synchronous Rectifier：No
- Operating Temperature：-40°C ~ 105°C (TA)
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Supplier Device Package：8-HTSOP-J
- Grade：Automotive
- Qualification：AEC-Q100
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Overview
The BD9G401EFJ-ME2 is a single-channel non-synchronous buck switching regulator manufactured by ROHM Semiconductor. It features an integrated Nch MOSFET and supports an input voltage range of 4.5 V to 42 V, with adjustable output voltages from 0.8 V to 42 V. The device delivers a maximum output current of 3.5 A and operates with a switch frequency between 250 kHz and 500 kHz. It is qualified under the AEC-Q100 standard for automotive applications and functions within a temperature range of -40°C to +105°C.
Feature Summary
- AEC-Q100 qualified for automotive reliability standards
- Integrated Nch MOSFET with wide input voltage capability
- External clock synchronization support for system timing alignment
- Zero standby current in shutdown mode via EN pin control
Applications
- Automotive infotainment systems
- Vehicle telematics units
- ADAS sensor power supplies
Procurement Notes
Verify component status as this part is marked Not Recommended for New Designs (NRND). Confirm package integrity upon receipt, as it ships in tape and reel format. Ensure compatibility with existing designs due to end-of-life status. Check RoHS compliance documentation for regulatory adherence. Validate supplier authenticity through authorized distribution channels.
Selection Notes
Select this component for legacy automotive designs requiring a non-synchronous buck topology with high input voltage tolerance. Consider the NRND status for long-term supply chain stability. Evaluate thermal performance in the HTSOP-J8 package for space-constrained layouts. Verify that external clock synchronization meets system jitter requirements. Assess availability of evaluation boards like the BD9G401EFJ-EVK-001 for prototyping.
Part Context
This device belongs to the BD9G401 series of integrated MOSFET DC-DC converters designed for automotive use. It utilizes constant on-time control for fast transient response. The series supports various packages including HTSOP-J8ES. It is distinct from synchronous variants like the BD9C401EFJ-E2, offering a simpler control structure suitable for specific noise or cost constraints in vehicle electronics.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided documentation. Due to the NRND status, alternative sourcing should focus on existing inventory or design migration to newer ROHM synchronous buck regulators.
