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Product Detailed Parameters
- Description：IC REG BUCK ADJ 3A 8SOPJ
- 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)：18V
- Voltage - Output (Min/Fixed)：0.8V
- Voltage - Output (Max)：12.6V
- Current - Output：3A
- Frequency - Switching：500kHz
- Synchronous Rectifier：Yes
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：8-SOP-J
- Grade：-
- Qualification：-
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Overview
The BD9C301FJ-LBGH2 is a synchronous buck switching regulator IC from ROHM Semiconductor, featuring an integrated power MOSFET. It operates with an input voltage range of 4.5 V to 18 V and provides a positive adjustable output voltage from 0.8 V to 12.6 V. The device delivers a maximum output current of 3 A with a typical switching frequency of 500 kHz. It utilizes a constant on-time control method for fast transient response and low standby power consumption. The component is housed in an 8-SOP-J package and supports surface mount installation.
Feature Summary
- Integrates internal power MOSFETs for compact design
- Employs constant on-time control for rapid transient response
- Optimized for low power consumption during light load conditions
Applications
- Portable electronic devices requiring efficient power management
- Industrial equipment with strict standby power requirements
- Embedded systems utilizing DC-DC step-down conversion
Procurement Notes
Verify the specific suffix LBGH2 against official ROHM documentation to confirm pinout and thermal characteristics. Ensure compatibility with existing PCB layouts regarding the 8-SOP-J package dimensions. Cross-reference the latest datasheet revision for any updates to electrical specifications or recommended operating conditions before finalizing procurement orders.
Selection Notes
Select this component when designing circuits that require high efficiency under varying load conditions. The integrated MOSFET simplifies bill of materials and reduces board space compared to discrete solutions. Consider the 500 kHz switching frequency for balancing component size and electromagnetic interference. Verify that the required output voltage falls within the 0.8 V to 12.6 V adjustable range.
Part Context
This part belongs to the BD9C301 series of integrated MOSFET DC-DC buck converters. The series is characterized by its ability to provide currents from 1 A to 6 A using constant on-time control. These regulators are designed for applications demanding low standby power and fast transient responses, making them suitable for modern portable and industrial electronics.
Replacement Considerations
The BD9C301FJ-E2 is a listed alternative part number for this component family. Verify functional equivalence and pin compatibility before substitution.
