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Product Detailed Parameters
- Description：IC REG BUCK ADJ 2A 20VQFN
- Series：-
- Mfr：Rohm Semiconductor
- Package：Tape & Reel (TR)
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Output Type：Adjustable
- Number of Outputs：1
- Voltage - Input (Min)：4.5V
- Voltage - Input (Max)：13.2V
- Voltage - Output (Min/Fixed)：2.5V
- Voltage - Output (Max)：6V
- Current - Output：2A
- Frequency - Switching：500kHz
- Synchronous Rectifier：Yes
- Operating Temperature：-40°C ~ 105°C (TA)
- Mounting Type：Surface Mount
- Package / Case：20-VFQFN Exposed Pad
- Supplier Device Package：VQFN020V4040
- Grade：-
- Qualification：-
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Overview
The BD9140MUV-E2 is a high-efficiency synchronous buck switching regulator manufactured by ROHM Semiconductor. It operates with an input voltage range of 4.5 V to 20 V and delivers a continuous output current of 2 A. The device features an adjustable output voltage from 2.5 V to 6 V. It integrates internal N-channel power MOSFETs and supports a fixed switching frequency of 500 kHz. The component is housed in a compact VFQFN-20-EP package, designed for surface-mount installation.
Feature Summary
- Integrates internal N-channel power MOSFETs for high efficiency
- Supports wide input voltage range up to 20 V
- Features adjustable output voltage capability
- Includes built-in protection functions
Applications
- Portable electronic devices requiring efficient step-down conversion
- Industrial control systems with varying input supplies
- Communication equipment power management
Procurement Notes
Verify the specific suffix and tape/reel specifications against the official ROHM datasheet before ordering. Confirm that the VFQFN-20-EP package dimensions match your PCB footprint requirements. Ensure compatibility with your target input voltage range and thermal management strategy. Check for any recent lifecycle status updates or recommended alternative part numbers from the manufacturer.
Selection Notes
Select this component when a wide input voltage range up to 20 V is required alongside a 2 A output capacity. It is suitable for applications needing adjustable output voltages between 2.5 V and 6 V. Consider the 500 kHz switching frequency for balancing component size and efficiency. Ensure the system design accommodates the thermal dissipation characteristics of the VFQFN-20-EP package under maximum load conditions.
Part Context
This part belongs to the BD914x series of synchronous buck converters from ROHM. These regulators are designed for general-purpose power supply applications where space constraints and efficiency are critical. The series typically offers integrated power switches to reduce external component count and simplify board layout.
Replacement Considerations
BD9141MUV-E2 is a related variant within the same family but operates with a different maximum input voltage limit of 13.2 V instead of 20 V. Verify if the lower input voltage rating of the substitute meets your system's maximum supply requirements before substitution.
