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Product Detailed Parameters
- Description：OPTOCOUPLER-LESS ISOLATED FLYBAC
- Series：-
- Mfr：Rohm Semiconductor
- Package：Tape & Reel (TR),Cut Tape (CT)
- Function：Step-Up/Step-Down
- Output Configuration：Positive, Isolation Capable
- Topology：Flyback
- Output Type：Adjustable
- Number of Outputs：1
- Voltage - Input (Min)：3V
- Voltage - Input (Max)：40V
- Voltage - Output (Min/Fixed)：-
- Voltage - Output (Max)：50V (Switch)
- Current - Output：-
- Frequency - Switching：400kHz
- Synchronous Rectifier：No
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Supplier Device Package：8-HTSOP-J
- Grade：-
- Qualification：-
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Overview
The BD7F100UEFJ-LBE2 is an optocoupler-less isolated flyback converter manufactured by ROHM Semiconductor. It integrates a switching MOSFET and operates at a fixed switching frequency of 400 kHz. The device supports an input voltage range of 3 V to 40 V and provides a single adjustable output up to 50 V with a maximum output current of 1.2 A. It functions within a temperature range of -40 °C to +125 °C and utilizes an 8-pin HTSOP-J package for surface mount installation.
Feature Summary
- Eliminates the need for external optocouplers through integrated isolation feedback mechanisms
- Combines controller logic and power switching elements in a compact single-chip solution
- Supports high-voltage isolated DC-DC conversion with adjustable output settings
Applications
- Isolated power supplies for industrial control systems
- Power modules for medical equipment requiring galvanic isolation
- Adapter circuits for consumer electronics with safety isolation requirements
Procurement Notes
Verify the specific suffix LBE2 against the official ROHM datasheet to confirm tape-and-reel packaging specifications and pinout orientation. Ensure design compatibility with the 8-HTSOP-J package dimensions and thermal dissipation requirements before finalizing procurement orders.
Selection Notes
Select this component when designing isolated flyback converters that require elimination of discrete optocouplers to reduce board space and improve reliability. Consider the 400 kHz switching frequency for transformer size optimization and verify that the 3 V to 40 V input range matches the source voltage profile.
Part Context
This part belongs to ROHM's family of optocoupler-less isolated flyback converters, designed to simplify power supply designs by integrating primary-side regulation techniques. It serves as a modern alternative to traditional isolated topologies that rely on separate optical isolation components for feedback loops.
Replacement Considerations
Consult the official ROHM replacement guide for direct equivalents. Verify pin-to-pin compatibility and electrical parameter alignment with any substitute parts from other manufacturers.
