BD8306MUV-E2

Overview

The BD8306MUV-E2 is a single-channel buck-boost switching voltage regulator manufactured by ROHM Semiconductor. It integrates the power switch and controller within a compact VQFN016V3030 package measuring 3.0x3.0 mm with a thickness of 1.0 mm. The device operates with an input voltage range from 1.8 V to 5.5 V and provides an adjustable output voltage between 1.8 V and 5.2 V. It supports a maximum output current of 1 A and features a programmable switching frequency up to 1 MHz. The component functions across a temperature range of -40 °C to +85 °C and includes an enable pin for power management.

Feature Summary

• Integrates a synchronous buck-boost converter topology with internal power FETs and control logic to minimize external component count.
• Utilizes a proprietary driving method that achieves higher efficiency compared to traditional SEPIC or H-bridge configurations.
• Supports flexible power supply architectures, enabling stable output generation from varying input sources such as multi-cell batteries or single lithium-ion cells.

Applications

• Powering portable electronic devices requiring efficient voltage conversion from battery sources.
• Applications involving single-cell lithium-ion battery systems needing regulated output voltages.
• Multi-cell dry battery powered equipment requiring step-up or step-down capabilities.

Procurement Notes

Verify the specific suffix E2 to confirm RoHS compliance and lead time alignment with manufacturing schedules. Confirm the VQFN016V3030 package dimensions match PCB footprint requirements. Ensure thermal dissipation plans account for the 3.0x3.0 mm package size under maximum load conditions. Cross-reference the datasheet revision date to ensure compatibility with design specifications.

Selection Notes

Select this component when a single-chip solution for buck-boost conversion is required to save board space. It is suitable for designs where input voltage may fluctuate above or below the desired output level. Consider the 1 A current limit and 1 MHz switching frequency when designing passive components. Evaluate the -40 °C to +85 °C operating range against environmental constraints.

Part Context

This part belongs to the BD8306 series of power management ICs designed for high-efficiency DC/DC conversion. It serves as a drop-in replacement for older SEPIC controllers in compact mobile applications. The integrated nature reduces BOM complexity compared to discrete solutions. It is distinct from linear regulators due to its switching architecture and broader input-output flexibility.

Replacement Considerations

Check for direct substitutes within the BD8306 family or other ROHM buck-boost regulators with similar pinouts and electrical characteristics. Verify that alternative parts support the same 1.8 V to 5.5 V input range and 1 A output capability. Ensure package compatibility with existing PCB layouts if swapping manufacturers.