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Product Detailed Parameters
- Description：IC REG BUCK ADJ 3A 20VQFN
- Series：-
- Mfr：Rohm Semiconductor
- Package：Tape & Reel (TR)
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Output Type：Adjustable
- Number of Outputs：1
- Voltage - Input (Min)：4.5V
- Voltage - Input (Max)：6.5V
- Voltage - Output (Min/Fixed)：1V
- Voltage - Output (Max)：3.3V
- Current - Output：3A
- Frequency - Switching：1MHz
- Synchronous Rectifier：Yes
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：24-VFQFN Exposed Pad
- Supplier Device Package：VQFN020V4040
- Grade：-
- Qualification：-
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Overview
The BD9142MUV-E2 is a synchronous buck converter manufactured by ROHM Semiconductor, designed for high-efficiency step-down voltage regulation. It operates with an input voltage range of 2.7 V to 5.5 V and delivers a maximum output current of 3 A. The device supports adjustable output voltages from 800 mV to 3.3 V. It features a fixed switching frequency of 1 MHz and maintains a low quiescent current of 10 uA. The component functions reliably within an operating temperature range of -40°C to +105°C and is housed in a compact VQFNV4040-EP-20 package.
Feature Summary
- Integrates internal power MOSFETs for synchronous rectification to maximize conversion efficiency.
- Provides precise voltage regulation with adjustable output settings via external resistors.
- Incorporates thermal shutdown and over-current protection mechanisms for system safety.
Applications
- Portable electronic devices requiring efficient battery-powered voltage regulation
- Embedded systems utilizing single-cell lithium-ion or lithium-polymer batteries
- Industrial control modules needing stable low-voltage power supplies
Procurement Notes
Verify the specific suffix E2 confirms RoHS compliance and lead-free status before procurement. Confirm the VQFNV4040-EP-20 package dimensions match your PCB footprint requirements. Ensure the design accounts for the 1 MHz switching frequency regarding electromagnetic interference filtering. Check for any recent lifecycle notices as this series may have replacement recommendations.
Selection Notes
Select this component when a single-output synchronous buck converter is required for inputs between 2.7 V and 5.5 V. It is suitable for applications demanding up to 3 A continuous load current with high efficiency. Consider the 1 MHz switching frequency for smaller passive component sizes compared to lower-frequency alternatives. Verify that the thermal performance in the VQFNV4040-EP-20 package meets the application's heat dissipation needs.
Part Context
This part belongs to the BD91xxMUV series of DC/DC converters from ROHM Semiconductor. These components are widely used in portable electronics and industrial applications where space constraints and power efficiency are critical. The series offers various current ratings and input voltage ranges to suit different system architectures.
Replacement Considerations
Consult official ROHM documentation for direct pin-to-pin replacements or functional equivalents within the BD91xxMUV family. Verify compatibility with existing control loops and thermal management designs when substituting.
