BD9A100MUV-E2

Overview

The BD9A100MUV-E2 is a synchronous buck DC-DC converter manufactured by ROHM Semiconductor. It integrates an N-channel MOSFET and operates with an input voltage range of 2.7 V to 5.5 V. The device provides a single adjustable output voltage ranging from 800 mV to 3.85 V with a maximum output current of 1 A. Key electrical parameters include a fixed switching frequency of 1 MHz, a typical quiescent current of 10 uA, and a working supply current of 400 uA. It functions within an ambient temperature range of -40°C to +85°C and utilizes a VQFNV3030-EP-16 surface-mount package.

Feature Summary

• Integrates a high-efficiency synchronous N-channel MOSFET for compact power solutions.
• Features ultra-low standby current consumption to extend battery life in portable devices.
• Supports flexible output voltage adjustment via external resistor network.
• Includes built-in protection mechanisms such as thermal shutdown and over-current protection.

Applications

• Portable electronic devices requiring efficient step-down conversion
• Battery-powered consumer electronics systems
• Embedded systems with strict power budget constraints

Procurement Notes

Verify the complete part number including the suffix E2 to ensure compliance with RoHS directives and lead-free manufacturing standards. Confirm that the required output voltage configuration matches the external feedback resistor values specified in the official datasheet. Ensure the PCB layout adheres to the recommended thermal pad connection guidelines for the VQFNV3030-EP-16 package to maintain optimal heat dissipation and operational reliability under load conditions.

Selection Notes

Select this component when a low-cost, small-footprint solution is needed for inputs between 2.7 V and 5.5 V. It is suitable for applications demanding moderate output currents up to 1 A where space is limited. Compare against higher current variants like the BD9A300 or BD9A600 if load requirements exceed 1 A. Consider the fixed 1 MHz frequency for balancing component size and efficiency against noise sensitivity requirements.

Part Context

This device belongs to the BD9A100MUV series of single-phase synchronous buck converters. It shares the same VQFNV3030-EP-16 package and core control architecture with other members of the BD9A family, such as the BD9A300 and BD9A600, which offer higher current capabilities. The series is designed for mobile and portable applications requiring high integration and minimal external component count.

Replacement Considerations

Direct functional substitutes within the same package and pinout include the BD9A100MUV (non-E2 variant) and potentially the BD9A300MUV-E2 if higher current capacity is acceptable. Verify pin compatibility and thermal characteristics before substituting with devices from other manufacturers.