BU90005GWZ-E2

$1.27

Description：IC REG BUCK 2.5V 1A 6WLCSP
Series：-
Mfr：Rohm Semiconductor
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:ac57ddd5a28f Category: Voltage Regulators - DC DC Switching Regulators Brand: Rohm Semiconductor

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Product introduction

Product Detailed Parameters

Description：IC REG BUCK 2.5V 1A 6WLCSP
Series：-
Mfr：Rohm Semiconductor
Package：Tape & Reel (TR),Cut Tape (CT)
Function：Step-Down
Output Configuration：Positive
Topology：Buck
Output Type：Fixed
Number of Outputs：1
Voltage - Input (Min)：2.3V
Voltage - Input (Max)：5.5V
Voltage - Output (Min/Fixed)：2.5V
Voltage - Output (Max)：-
Current - Output：1A
Frequency - Switching：6MHz
Synchronous Rectifier：Yes
Operating Temperature：-40°C ~ 85°C (TA)
Mounting Type：Surface Mount
Package / Case：6-XFBGA, WLCSP
Supplier Device Package：6-WLCSP
Grade：-
Qualification：-

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BU90005GWZ-E2

Overview

The BU90005GWZ-E2 is a step-down switching regulator with an integrated power MOSFET, manufactured by ROHM Semiconductor. It operates within an input voltage range of 2.3 V to 5.5 V and provides a fixed output voltage of 2.5 V. The device supports a maximum output current of 100 mA and features a switching frequency between 5.4 MHz and 6.6 MHz. Quiescent current is specified at 45 uA. It functions in temperatures from -40 °C to +85 °C and utilizes the UCSP35L1-6 package.

Feature Summary

Integrates a power MOSFET for compact buck topology implementation
Supports automatic PFM/PWM operation for light load efficiency
Includes internal soft start and under-voltage lockout protection

Applications

Portable electronic devices requiring low quiescent current
Battery-powered systems with single-cell lithium-ion inputs
Embedded logic supply regulation

Procurement Notes

Verify the specific suffix E2 against the official datasheet to confirm pinout and electrical characteristics match design requirements. Confirm RoHS compliance status directly from the manufacturer's documentation. Check for obsolescence notices as distribution channels may list varying lifecycle statuses. Ensure the UCSP35L1-6 package footprint aligns with PCB layout constraints before finalizing procurement.

Selection Notes

Select this component when a fixed 2.5 V output is required from a 2.3 V to 5.5 V source. The 100 mA output limit suits low-power applications rather than high-current loads. The high switching frequency allows for smaller external passive components compared to lower-frequency regulators. Verify that the 45 uA quiescent current meets system standby power budgets.

Part Context

This part belongs to the BU90005GWZ series of synchronous buck converters. It is designed for space-constrained applications due to its small UCSP35L1-6 package. The series focuses on efficiency and transient response for portable electronics. It serves as a power management solution for digital circuits requiring stable voltage rails.