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Product Detailed Parameters
- Description：IC REG BUCK ADJ 1A 8SOPJ
- Series：-
- Mfr：Rohm Semiconductor
- Package：Tape & Reel (TR),Cut Tape (CT)
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Output Type：Adjustable
- Number of Outputs：1
- Voltage - Input (Min)：7V
- Voltage - Input (Max)：26V
- Voltage - Output (Min/Fixed)：1V
- Voltage - Output (Max)：13V
- Current - Output：1A
- Frequency - Switching：570kHz
- Synchronous Rectifier：Yes
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：8-SOP-J
- Grade：-
- Qualification：-
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Overview
The BD9E104FJ-E2 is a single synchronous buck DC/DC converter manufactured by ROHM Semiconductor. It integrates a power MOSFET and controller within an SOP-J-8 package. The device operates with an input voltage range of 7 V to 26 V, delivering a maximum output current of 1 A. The adjustable output voltage spans from 1 V to 13 V. Key electrical parameters include a switching frequency of 570 kHz, a typical quiescent current of 10 uA, and an operating supply current of 250 uA. It supports a shutdown function and functions reliably across a temperature range of -40°C to +85°C.
Feature Summary
- Integrates low on-resistance power MOSFETs for efficient synchronous rectification.
- Employs SLLM (Simple Light Load Mode) control to maintain high efficiency under light load conditions.
- Utilizes current mode control architecture to ensure rapid transient response performance.
- Features simplified phase compensation design for ease of implementation.
Applications
- Communication equipment power supplies
- DC/DC power conversion modules
- General purpose electronic devices requiring standby power reduction
Procurement Notes
Verify the specific suffix E2 against the manufacturer's latest datasheet to confirm pinout compatibility and RoHS status. Confirm that the application does not require automotive qualification, as this component is designated for standard grade use only. Ensure the selected packaging format matches the production requirements.
Selection Notes
Select this component for applications requiring a compact solution with integrated power switches. It is suitable where low standby power consumption is critical due to its light load efficiency features. Consider the 570 kHz switching frequency when designing external inductor and capacitor values. Verify that the 1 A output current meets the system load requirements without exceeding thermal limits.
Part Context
This part belongs to the BD9E series of synchronous buck converters from ROHM Semiconductor. The series is characterized by integrated MOSFETs and advanced light load management techniques. The BD9E104FJ-E2 specifically targets general-purpose power management needs in consumer and industrial electronics, offering a balance between performance and simplicity.
Replacement Considerations
The BD9E104FJ is listed as an alias or predecessor variant. Verify functional equivalence and pin compatibility before substitution. No other direct cross-model replacements are documented in the provided data.
