BU9006GUZ-E2

Overview

The BU9006GUZ-E2 is a synchronous buck switching voltage regulator manufactured by ROHM Semiconductor, featuring an integrated power switch. It operates within an input voltage range of 2.5 V to 4.5 V and provides a single adjustable output voltage from 950 mV to 4.5 V with a maximum output current of 750 mA. The device utilizes a fixed switching frequency of 2 MHz and functions reliably across an operating temperature range of -35 °C to +85 °C. Packaged in a WLCSP-9 format for surface mount installation, it belongs to the BU9006GUZ series.

Feature Summary

• Integrates a synchronous buck topology with an internal power FET to minimize external component count.
• Supports adjustable output voltages ranging from 950 mV to 4.5 V for flexible system power requirements.
• Operates at a fixed 2 MHz switching frequency to facilitate compact passive component selection.

Applications

• Portable electronic devices requiring efficient step-down conversion
• Battery-powered systems needing regulated low-voltage rails
• Embedded applications utilizing WLCSP packaging constraints

Procurement Notes

Verify the current lifecycle status before integration, as this component may be marked as Not Recommended for New Designs (NRND). Confirm availability through authorized distributors, noting that factory packaging quantities typically start at 3000 units. Ensure compliance with RoHS directives and check for specific regional sales restrictions or discontinuance notifications prior to finalizing procurement plans.

Selection Notes

Select this regulator when a compact footprint is required due to its WLCSP-9 package. It is suitable for designs where a fixed 2 MHz frequency aligns with EMI and filter size constraints. Consider the 750 mA output limit and 4.5 V maximum input voltage to ensure compatibility with the target power bus. Verify thermal performance within the specified -35 °C to +85 °C range for the intended environment.

Part Context

This component is part of the BU9006GUZ series of switching regulators from ROHM Semiconductor. It falls under the PMIC - Power Management ICs subcategory and is classified as a Switching Voltage Regulator. The device integrates both the controller and the power MOSFET, distinguishing it from controllers that require external switches.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Consult official ROHM resources for potential obsolescence management or alternative series recommendations.