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Product Detailed Parameters
- Description：IC REG BUCK 1.24V 800MA 8MSOP
- Series：-
- Mfr：Rohm Semiconductor
- Package：Tape & Reel (TR),Tape & Reel (TR),Cut Tape (CT)
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Output Type：Fixed
- Number of Outputs：1
- Voltage - Input (Min)：4V
- Voltage - Input (Max)：5.5V
- Voltage - Output (Min/Fixed)：1.24V
- 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 BD9102FVM-TR is a synchronous buck switching regulator manufactured by ROHM Semiconductor, designed to generate low output voltages from 5V or 3.3V power lines. It operates with an input voltage range of 4V to 5.5V and provides a fixed output of 1.24V at up to 800mA. The device features a 1MHz switching frequency and utilizes current-mode PWM control for fast transient response. It includes integrated Nch/Pch FETs, SLLM™ for light load efficiency, soft start, and protection functions like UVLO and timer latch short circuit protection.
Feature Summary
- Utilizes current-mode PWM control to achieve high-speed transient response during load changes.
- Integrates synchronous rectification (Nch/Pch FETs) and Simple Light Load Mode (SLLM) for high efficiency across the entire load range.
- Includes built-in protection mechanisms such as temperature monitoring, under-voltage lockout (UVLO), and timer latch-based short circuit protection.
Applications
- Generating low voltage rails from 5V/3.3V sources in portable devices
- Power management in standard-grade consumer electronics
- Embedded systems requiring efficient step-down conversion
Procurement Notes
Verify the specific suffix TR indicates tape and reel packaging when ordering. Confirm RoHS compliance status through official datasheets. Ensure the MSOP-8 package dimensions match your PCB footprint requirements. Check for obsolescence notices as this is a standard-grade component not recommended for automotive use.
Selection Notes
Select this component for applications requiring a fixed 1.24V output from a 5V input. It is suitable where space is limited due to the compact MSOP-8 package. Consider alternatives if adjustable output voltage or higher current capacity is needed. Verify thermal performance within the -25°C to +85°C operating range for your specific enclosure.
Part Context
This part belongs to the BD9102FVM series of high-efficiency step-down switching regulators. It is categorized under PMIC - Power Management ICs. The device is distinct from linear regulators and boost converters, specifically optimized for buck topology applications in standard industrial and consumer environments.
Replacement Considerations
Check for pin-compatible alternatives within the BD91xx series. Verify if other ROHM buck converters offer adjustable outputs or different current ratings if system requirements change. Ensure any substitute maintains the same MSOP-8 package and electrical specifications.
