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BU28SA4WGWL-E2

BU28SA4WGWL-E2 Description

The BU28SA4WGWL-E2 is a linear voltage regulator designed by ROHM Semiconductor, offering a fixed output voltage of 2.8V and a maximum output current of 200mA. This regulator is housed in a compact UCSP50L1 package, making it suitable for surface mount applications. Despite its small size, it provides robust performance with a maximum input voltage of 5.5V and a low dropout voltage of 0.15V at 100mA. The regulator features an enable control function, allowing for dynamic control of its operation, and includes over-current and over-temperature protection to ensure reliable performance under various operating conditions. The BU28SA4WGWL-E2 is REACH unaffected and RoHS3 compliant, ensuring environmental safety and regulatory adherence. Its low quiescent current of 80 µA and a PSRR ranging from 70dB to 45dB (1kHz to 100kHz) make it ideal for applications requiring high efficiency and low noise.

BU28SA4WGWL-E2 Features

• Fixed Output Voltage: Provides a stable 2.8V output, ensuring consistent power supply for sensitive electronic components.
• High Efficiency: Achieves a low dropout voltage of 0.15V at 100mA, minimizing power loss and improving overall system efficiency.
• Enable Control: Offers dynamic control over the regulator's operation, allowing for power-saving modes and controlled startup sequences.
• Protection Features: Includes over-current and over-temperature protection to safeguard the regulator and connected components from damage.
• Low Quiescent Current: Consumes only 80 µA in quiescent mode, making it suitable for battery-powered and low-power applications.
• High PSRR: Exhibits a power supply rejection ratio of 70dB to 45dB across a frequency range of 1kHz to 100kHz, ensuring minimal noise interference.
• Compact Design: Utilizes a UCSP50L1 package, ideal for space-constrained designs and surface mount applications.
• Environmental Compliance: REACH unaffected and RoHS3 compliant, ensuring adherence to environmental regulations and safety standards.

BU28SA4WGWL-E2 Applications

The BU28SA4WGWL-E2 is well-suited for a variety of applications where stable voltage regulation and low power consumption are critical. Its compact size and high efficiency make it ideal for portable electronic devices, such as smartphones, tablets, and wearable technology. The regulator's low dropout voltage and high PSRR also make it suitable for precision instrumentation, medical devices, and IoT sensors, where reliable power supply and low noise are essential. Additionally, its enable control feature and protection mechanisms ensure robust performance in automotive electronics and industrial control systems.

Conclusion of BU28SA4WGWL-E2

The BU28SA4WGWL-E2 by ROHM Semiconductor stands out as a reliable and efficient linear voltage regulator. Its combination of a fixed 2.8V output, low dropout voltage, and low quiescent current makes it an excellent choice for applications requiring stable power supply and minimal power loss. The inclusion of enable control and comprehensive protection features further enhances its versatility and reliability. While marked as "Not For New Designs," the BU28SA4WGWL-E2 remains a valuable component for existing projects and legacy systems, offering a balance of performance, efficiency, and environmental compliance.