BD9B200MUV-E2

Overview

The BD9B200MUV-E2 is a single synchronous buck DC/DC converter manufactured by ROHM Semiconductor. It integrates power MOSFETs and operates within an input voltage range of 2.7 V to 5.5 V, delivering a maximum output current of 2 A. The adjustable output voltage spans from 800 mV to 4.4 V. Key electrical parameters include a quiescent current of 10 uA and a switching frequency range of 1 MHz to 2 MHz. The device supports operation between -40°C and +85°C and utilizes a QFN-16 package.

Feature Summary

• Employs constant on-time control architecture for rapid transient response and low standby power consumption
• Integrates internal protection mechanisms including over-current, short-circuit, thermal shutdown, and under-voltage lockout
• Features adjustable soft-start functionality and a Power Good output indicator

Applications

• Portable electronic devices requiring low standby power
• Battery-powered consumer electronics
• General-purpose embedded systems with single rail requirements

Procurement Notes

Verify the specific suffix E2 against official ROHM documentation to confirm compliance status and revision history. Confirm that the QFN-16 package dimensions match the design footprint. Ensure the application environment remains within the specified -40°C to +85°C operating temperature range. Validate input voltage stability within the 2.7 V to 5.5 V limits before integration.

Selection Notes

Select this component when a compact synchronous buck solution is required for inputs up to 5.5 V. The integrated MOSFETs simplify design by reducing external component count. The constant on-time control offers advantages in transient performance compared to traditional PWM controllers. Consider the 1 MHz to 2 MHz switching frequency for balancing efficiency and passive component size.

Part Context

This part belongs to the BD9B series of integrated MOSFET DC-DC buck converters from ROHM. These regulators utilize proprietary constant on-time control methods to achieve high efficiency across various load conditions. The series is designed for applications demanding small form factors and low quiescent currents, distinguishing it from standard PWM-based regulators.

Replacement Considerations

BD9B200MUV is the base model variant without the E2 suffix. Verify pin compatibility and electrical specifications before substitution.