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Product Detailed Parameters
- Description：IC REG BUCK 3.3V 800MA 8MSOP
- 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)：4.5V
- Voltage - Input (Max)：5.5V
- Voltage - Output (Min/Fixed)：3.3V
- Voltage - Output (Max)：-
- Current - Output：800mA
- Frequency - Switching：1MHz
- Synchronous Rectifier：Yes
- Operating Temperature：-25°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：8-VSSOP, 8-MSOP (0.110", 2.80mm Width)
- Supplier Device Package：8-MSOP
- Grade：-
- Qualification：-
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Overview
The BD9104FVM-TR is a single-channel synchronous buck switching regulator manufactured by ROHM Semiconductor. It operates within an input voltage range of 4.5 V to 5.5 V and provides a fixed 3.3 V output at up to 800 mA. The device utilizes current mode PWM control for fast transient response and integrates synchronous rectification with Simple Light Load Mode (SLLM) for high efficiency across load ranges. Key electrical parameters include a 1 MHz switching frequency, 250 uA operating supply current, and 10 uA static current in shutdown. It functions between -25°C and +85°C in an MSOP-8 package.
Feature Summary
- Integrates synchronous Nch/Pch FETs with SLLM technology for high efficiency across full load ranges
- Employs current mode PWM control to achieve rapid transient response during load changes
- Includes built-in protection mechanisms such as thermal protection, UVLO, and timed short-circuit protection
Applications
- Generating low voltage rails from 5V or 3.3V power lines
- Portable electronic devices requiring efficient step-down regulation
- Industrial equipment power management systems
Procurement Notes
Verify the component status before procurement as it may be classified as Not Recommended for New Designs (NRND). Confirm the specific suffix matches the required tape and reel quantity. Ensure compatibility with existing PCB footprints for the MSOP-8 package. Check for RoHS compliance documentation if required by your manufacturing standards. Validate that the fixed 3.3V output aligns with your system design requirements.
Selection Notes
Select this component when a fixed 3.3V output is required from a 5V input source. It is suitable for applications needing moderate current capacity up to 800 mA. Consider its synchronous topology for improved efficiency compared to nonsynchronous alternatives. Evaluate the MSOP-8 package size against available board space. Ensure the operating temperature range meets your environmental conditions.
Part Context
This part belongs to the BD91xxFVM series of high-efficiency step-down switching regulators from ROHM. These ICs are designed to generate low voltages like 1V or 3.3V from standard 5V or 3.3V supplies. The series emphasizes efficiency through unique pulse skipping modes and synchronous rectification circuits.
Replacement Considerations
BD9106FVM-LB is a related variant within the same family but features an adjustable output voltage range rather than a fixed 3.3V output. Verify pinout compatibility and electrical specifications before substitution.
