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Product Detailed Parameters
- Description：IC REG BUCK ADJ 2A VQFN20FV4040
- 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)：3.5V
- Voltage - Input (Max)：40V
- Voltage - Output (Min/Fixed)：0.8V
- Voltage - Output (Max)：8.5V
- Current - Output：2A
- Frequency - Switching：2.2MHz
- Synchronous Rectifier：Yes
- Operating Temperature：-40°C ~ 125°C (TA)
- Mounting Type：Surface Mount, Wettable Flank
- Package / Case：20-VFQFN Exposed Pad
- Supplier Device Package：VQFN20FV4040
- Grade：Automotive
- Qualification：AEC-Q100
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Overview
The BD9P205MUF-CE2 is a synchronous buck DC/DC converter from ROHM Semiconductor, designed for automotive applications. It features Nano Pulse Control technology and operates with an input voltage range of 3.5V to 40V. The device delivers a maximum output current of 2A with an adjustable output voltage between 800mV and 8.5V. It integrates power MOSFETs and supports a switching frequency up to 2.2MHz. The component is qualified under AEC-Q100 Grade 1 standards and functions within a temperature range of -40°C to +125°C.
Feature Summary
- Utilizes Nano Pulse Control technology to achieve stable step-down ratios and fast transient response.
- Integrates power MOSFETs and controller in a single package for compact design.
- Includes spread spectrum function to reduce electromagnetic interference (EMI).
- Supports low quiescent current operation for improved efficiency in light load conditions.
Applications
- Advanced Driver Assistance Systems (ADAS) sensors
- Automotive cameras and radar systems
- In-vehicle infotainment units
- Instrument clusters
- Body Control Modules (BCM)
Procurement Notes
Verify the specific suffix CE2 against the manufacturer's latest documentation to confirm pinout and packaging details. Check for any pending Product Change Notices (PCN) that may update specifications without altering electrical characteristics. Ensure compatibility with automotive functional safety requirements if applicable to the system design.
Selection Notes
Select this component for designs requiring high input voltage tolerance up to 40V and robust automotive reliability. The integrated MOSFETs simplify layout compared to discrete solutions. Consider the 2.2MHz switching frequency for balancing component size and efficiency. Verify thermal performance within the VQFNNFV4040-EP-20 package for the intended power dissipation levels.
Part Context
This part belongs to the BD9P series of 42V withstand automotive primary DC/DC converters. The series emphasizes high-speed response and high efficiency, suitable for reducing system power consumption and BOM costs. It is engineered for applications demanding miniaturization and high reliability in harsh automotive environments.
Replacement Considerations
The BD9P205MUF-C is listed as an alias for this part number. Verify if the CE2 suffix denotes a specific tape-and-reel or environmental qualification variant distinct from the base C suffix by consulting the official datasheet before substitution.
