STMicroelectronics

ST2044BD

ST2044BD Description

The ST2044BD is a high-side power switch designed by STMicroelectronics, featuring a general-purpose switch type with a 2 x 1:2 input-to-output ratio. This device is ideal for applications requiring efficient power management and control. The ST2044BD is housed in a surface-mount package, specifically a tube, making it suitable for compact and high-density designs. It operates within a load voltage range of 2.7V to 5.5V and can handle a maximum output current of 500mA. The device is REACH unaffected and RoHS3 compliant, ensuring it meets environmental and regulatory standards. Additionally, it features a moisture sensitivity level of 1 (unlimited), making it robust against environmental factors.

ST2044BD Features

• Output Configuration: High Side
• Current - Output (Max): 500mA
• Voltage - Load: 2.7V to 5.5V
• Rds On (Typ): 80mOhm
• Number of Outputs: 4
• Fault Protection: Current Limiting (Fixed), Over Temperature, UVLO
• Mounting Type: Surface Mount
• Package: Tube
• Interface: On/Off
• Product Status: Obsolete
• REACH Status: REACH Unaffected
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)
• ECCN: EAR99
• HTSUS: 8542.39.0001

The ST2044BD offers several unique features that set it apart from similar models. Its high-side output configuration ensures efficient power delivery and control, while the 80mOhm typical on-resistance minimizes power loss and enhances overall efficiency. The device also includes comprehensive fault protection mechanisms, such as fixed current limiting, over-temperature protection, and under-voltage lockout (UVLO), ensuring reliable operation and safeguarding against potential damage.

ST2044BD Applications

The ST2044BD is well-suited for a variety of applications where precise power management is crucial. Its general-purpose switch type and 2 x 1:2 input-to-output ratio make it ideal for applications such as:

• Power Distribution: Efficiently managing power distribution in complex systems.
• Load Switching: Enabling seamless switching between different loads.
• Battery Management: Controlling power flow in battery-powered devices.
• Consumer Electronics: Enhancing power control in devices like smartphones, tablets, and laptops.

The device's compact surface-mount package and robust environmental resistance make it particularly suitable for applications where space is limited and reliability is paramount.

Conclusion of ST2044BD

The ST2044BD from STMicroelectronics is a versatile and reliable power switch designed for high-side power management applications. Its comprehensive feature set, including high current handling capability, low on-resistance, and robust fault protection, makes it an excellent choice for a wide range of applications. Despite its obsolete status, the ST2044BD remains a valuable component for existing designs and legacy systems. Its compliance with environmental regulations and robustness against environmental factors further enhance its appeal. For engineers and designers seeking a reliable and efficient power switch, the ST2044BD offers a proven solution.