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Product Detailed Parameters
- Description：IC REG BUCK ADJ 8A 11VQFN
- 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)：4.5V
- Voltage - Input (Max)：28V
- Voltage - Output (Min/Fixed)：0.765V
- Voltage - Output (Max)：13.5V
- Current - Output：8A
- Frequency - Switching：300kHz, 600kHz
- Synchronous Rectifier：Yes
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：Surface Mount
- Package / Case：11-PowerUFQFN
- Supplier Device Package：VQFN11X3535A
- Grade：-
- Qualification：-
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Overview
The BD9F800MUX-ZE2 is a single synchronous buck DC/DC converter manufactured by ROHM Semiconductor. It integrates low on-resistance power MOSFETs and operates within an input voltage range of 4.5 V to 28 V. The device delivers a maximum output current of 8 A with an adjustable output voltage spanning from 765 mV to 13.5 V. It utilizes constant time control for fast load response without external phase compensation. The switching frequency is programmable between 300 kHz and 600 kHz, and the unit functions in temperatures from -40°C to +85°C.
Feature Summary
- Integrates low on-resistance power MOSFETs for high-efficiency synchronous rectification
- Employs constant time control architecture to ensure rapid transient response
- Eliminates the need for external phase compensation circuits
- Supports adjustable output voltage settings across a wide operational range
Applications
- Power supply reference boards for Xilinx Spartan-7 FPGAs
- Motor drivers for service robotics applications
- General-purpose DC/DC step-down conversion in industrial equipment
Procurement Notes
Verify the specific suffix Z-E2 against official ROHM documentation to confirm package type and tape-and-reel specifications. Ensure compatibility with the BD9F800MUX-EVK-001 evaluation kit if development support is required. Confirm RoHS compliance status through the manufacturer's latest datasheet before finalizing procurement orders.
Selection Notes
Select this component when designing systems requiring up to 8 A continuous current from a 28 V input source. The integrated MOSFET design reduces external component count compared to discrete solutions. Consider the 300 kHz to 600 kHz frequency range for balancing efficiency and passive component size. Verify thermal management requirements for the VQFNX3535A-11 package under full load conditions.
Part Context
This part belongs to the BD9F800 series of integrated MOSFET DC-DC step-down regulators. The series is characterized by its ability to provide high current outputs while maintaining compact footprints. It is designed for applications demanding fast transient responses and simplified circuit layouts due to built-in control logic and protection features.
Replacement Considerations
Consult ROHM official documentation for direct pin-compatible substitutes within the BD9x family. No public substitute part numbers are confirmed for this specific model.
