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Product Detailed Parameters
- Description：IC REG BUCK 3.3V 1A VQFN20FV4040
- Series：-
- Mfr：Rohm Semiconductor
- Package：Tape & Reel (TR),Cut Tape (CT)
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Output Type：Fixed
- Number of Outputs：1
- Voltage - Input (Min)：3.5V
- Voltage - Input (Max)：40V
- Voltage - Output (Min/Fixed)：3.3V
- Voltage - Output (Max)：-
- Current - Output：1A
- 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 BD9P135MUF-CE2 is a synchronous buck DC/DC converter from ROHM Semiconductor, designed for automotive applications. It operates with an input voltage range of 3.5 V to 40 V and provides a fixed 3.3 V output at up to 1.0 A. The device features a switching frequency of 2.2 MHz and a typical quiescent current of 10 uA. It supports an operating temperature range from -40°C to +125°C and is housed in a VQFNFV4040-EP-20 package.
Feature Summary
- Utilizes Nano Pulse Control technology to achieve stable operation with high step-down ratios and low electromagnetic interference through spread spectrum functionality.
- Features fast response performance to maintain stable power supply during battery startup conditions, contributing to reduced system power consumption.
- Includes a shutdown function for enhanced power management capabilities within the integrated circuit.
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 official datasheet to confirm pinout and packaging details. Ensure compatibility with automotive functional safety requirements if applicable. Confirm RoHS compliance status directly from the manufacturer's documentation before integration into production designs.
Selection Notes
Select this component for designs requiring a fixed 3.3 V output from a wide automotive input range. The 1.0 A current capacity suits moderate load applications. Consider the 2.2 MHz frequency for balancing efficiency and external component size. Verify thermal performance within the specified -40°C to +125°C operational envelope.
Part Context
This part belongs to the BD9P series of ROHM Semiconductor, which are primary DC/DC converters rated for 42V automotive systems. The series emphasizes high efficiency and small footprint solutions for modern vehicle electronics. The BD9P135MUF variant specifically targets applications needing reliable 3.3 V regulation under varying automotive electrical conditions.
Replacement Considerations
Check for direct substitutes within the BD9P series offering different output voltages or current ratings. Verify package compatibility with existing PCB footprints. Consult ROHM documentation for any Product Change Notices (PCN) that may affect specifications or manufacturing locations.
