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Product Detailed Parameters
- Description：IC REG BUCK ADJ 3A 20VQFN
- 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)：2.7V
- Voltage - Input (Max)：5.5V
- Voltage - Output (Min/Fixed)：0.8V
- Voltage - Output (Max)：3.3V
- Current - Output：3A
- Frequency - Switching：1MHz
- Synchronous Rectifier：Yes
- Operating Temperature：-40°C ~ 105°C (TA)
- Mounting Type：Surface Mount
- Package / Case：20-VFQFN Exposed Pad
- Supplier Device Package：VQFN020V4040
- Grade：-
- Qualification：-
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Overview
The BD9132MUV-E2 is a synchronous buck converter manufactured by ROHM Semiconductor, designed for high-efficiency power management in compact electronic systems. It operates with an input voltage range of 2.7 V to 5.5 V and provides a single adjustable output voltage ranging from 800 mV to 3.3 V. The device supports a maximum output current of 3 A and integrates internal power MOSFETs to minimize external component count. It features a fixed switching frequency of 1 MHz, enabling the use of small inductors and capacitors. The IC includes built-in protection mechanisms such as overcurrent protection and thermal shutdown. It is housed in a QFN-EP-20 package and is rated for operation between -40°C and +105°C.
Feature Summary
- Integrates synchronous buck topology with internal power switches for efficient step-down conversion
- Supports wide input voltage range suitable for single-cell lithium battery or 5V rail applications
- Features low quiescent current to enhance efficiency during light-load or standby conditions
- Includes comprehensive protection functions including overcurrent and thermal shutdown
Applications
- Portable consumer electronics requiring efficient battery-powered regulation
- Embedded systems utilizing single-cell lithium-ion or lithium-polymer batteries
- Industrial control modules needing stable low-voltage power rails
- Communication equipment requiring compact power management solutions
Procurement Notes
Verify the exact suffix and tape/reel specifications against the official datasheet before ordering. Confirm that the QFN-EP-20 package dimensions match your PCB footprint requirements. Ensure thermal design accounts for the operating temperature range and load conditions. Check for any specific handling or storage guidelines provided by the manufacturer.
Selection Notes
Select this component when a single-output synchronous buck converter is needed with up to 3 A capability. It is suitable for applications where input voltages vary between 2.7 V and 5.5 V. Consider the 1 MHz switching frequency for balancing efficiency and component size. Evaluate thermal performance based on expected load currents and ambient temperatures.
Part Context
This part belongs to the BD9132MUV series of synchronous buck converters from ROHM Semiconductor. It is designed for general-purpose power management in portable and industrial devices. The series emphasizes high efficiency and compact form factors through integrated power switches and optimized control circuitry.
Replacement Considerations
Consult official substitution guides for compatible parts within the same family or equivalent offerings from other manufacturers. Verify pin compatibility and electrical specifications before replacing.
