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Product Detailed Parameters
- Description：IC REG BUCK 5V 2A 20HTSSOP-B
- 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)：5V
- Voltage - Output (Max)：-
- Current - Output：2A
- Frequency - Switching：2.2MHz
- Synchronous Rectifier：Yes
- Operating Temperature：-40°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Package / Case：20-VSSOP (0.173", 4.40mm Width) Exposed Pad
- Supplier Device Package：20-HTSSOP-B
- Grade：Automotive
- Qualification：AEC-Q100
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Overview
The BD9P255EFV-CE2 is a Nano Pulse Control™ integrated MOSFET DC-DC buck converter designed for automotive primary applications. It supports an input voltage range of 3.5 V to 40 V and delivers a fixed 5.0 V output at up to 2 A. The device operates with a switching frequency of up to 2.2 MHz and features light load mode for reduced standby power consumption. It functions within an operating temperature range of -40 °C to +125 °C and utilizes HTSSOP-B20 packaging.
Feature Summary
- Utilizes Nano Pulse Control™ technology to achieve stable step-down ratios and high-speed response during battery start-up events.
- Incorporates spread spectrum functionality to minimize electromagnetic interference (EMI) and noise levels.
- Features integrated synchronous FET topology for efficient power conversion in compact designs.
Applications
- ADAS sensors, cameras, and radar systems
- Automotive infotainment systems
- Instrument clusters
- Body Control Modules (BCM)
Procurement Notes
Verify the complete part number including the suffix CE2 to ensure correct package and tape/reel configuration. Confirm that the FS Supportive classification aligns with your functional safety analysis requirements. Check RoHS compliance status and moisture sensitivity levels prior to assembly planning. Ensure the ordering quantity matches the specified taping format constraints.
Selection Notes
Select this component for automotive systems requiring high reliability and small form factors. The wide input voltage range accommodates various vehicle electrical architectures. The integrated FET design reduces external component count. Consider the 2.2 MHz frequency for smaller inductor selection. Verify thermal performance within the -40 °C to +125 °C range for your specific enclosure.
Part Context
This IC belongs to the BD9P series of 42 V withstand voltage automotive primary DC/DC converters. The series emphasizes high efficiency and fast transient response. It is engineered to support system miniaturization and BOM cost reduction in demanding automotive environments. The Nano Pulse Control™ method distinguishes it from conventional constant on-time controllers by offering optimized light-load performance.
Replacement Considerations
Consult official ROHM documentation for direct substitutes within the BD9P family. Verify pin compatibility and electrical specifications before swapping. No public confirmed substitute part numbers are listed in the provided source material.
