STMicroelectronics

ST2051BDR  

Power Distribution Switches, Load Drivers

ST2051BDR Description

The ST2051BDR is a high-side power switch designed by STMicroelectronics, a leading manufacturer in the electronics industry. This device is part of the Power Management Integrated Circuit (PMIC) category and is specifically designed for general-purpose applications. The ST2051BDR features a 1:1 input-to-output ratio, making it suitable for applications requiring a straightforward power switching solution. 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 packaged in an 8SO (Small Outline) package and is available in tape and reel format, facilitating surface mount assembly processes. The ST2051BDR is REACH unaffected and RoHS3 compliant, ensuring it meets stringent environmental and safety standards. It also features a moisture sensitivity level (MSL) of 3, allowing for a 168-hour exposure period, which is ideal for manufacturing environments. The device includes robust fault protection mechanisms such as fixed current limiting, over-temperature protection, and under-voltage lockout (UVLO), ensuring reliable operation and protection against various fault conditions.

ST2051BDR Features

• High-Side Output Configuration: The ST2051BDR is designed with a high-side output configuration, which simplifies circuit design and enhances control over the power delivery.
• Robust Fault Protection: The device incorporates fixed current limiting, over-temperature protection, and UVLO to safeguard against overcurrent, overheating, and low input voltage conditions, respectively. These features ensure the longevity and reliability of the power switch in various operating environments.
• Low On-Resistance (Rds On): With a typical on-resistance of 80mOhm, the ST2051BDR minimizes power loss and heat generation, making it highly efficient for applications requiring low power consumption.
• Wide Operating Voltage Range: The ST2051BDR operates within a load voltage range of 2.7V to 5.5V, providing flexibility and compatibility with a wide range of power sources and devices.
• Surface Mount Compatibility: The device is designed for surface mount technology (SMT), which facilitates high-density and automated assembly processes, ideal for modern manufacturing environments.
• Environmental Compliance: The ST2051BDR is REACH unaffected and RoHS3 compliant, ensuring it meets the latest environmental and safety regulations, making it suitable for global markets.
• Moisture Sensitivity Level 3: With an MSL of 3, the ST2051BDR can withstand a 168-hour exposure period, providing flexibility in manufacturing processes and reducing the risk of moisture-related defects.

ST2051BDR Applications

The ST2051BDR is ideal for a variety of applications that require reliable and efficient power switching solutions. Some specific use cases include:

• Consumer Electronics: Ideal for portable devices, smartphones, tablets, and other consumer electronics where power management and low power consumption are critical.
• Industrial Equipment: Suitable for industrial control systems, automation devices, and sensors where robust fault protection and reliability are essential.
• Automotive Applications: The device's fault protection and wide operating voltage range make it suitable for automotive applications, including infotainment systems, electronic control units, and power management systems.
• Medical Devices: The ST2051BDR can be used in medical equipment such as diagnostic devices, portable medical instruments, and monitoring systems, where reliability and safety are paramount.
• Telecommunications: Ideal for communication infrastructure equipment, including base stations, routers, and switches, where efficient power management and fault protection are required.

Conclusion of ST2051BDR

The ST2051BDR from STMicroelectronics is a versatile and reliable power switch designed for general-purpose applications. Its high-side output configuration, robust fault protection mechanisms, and low on-resistance make it an efficient and reliable choice for a wide range of applications. The device's wide operating voltage range, surface mount compatibility, and environmental compliance further enhance its suitability for modern electronics. While the ST2051BDR is now considered obsolete, its features and performance benefits make it a valuable component for existing designs and legacy systems. For new projects, engineers may consider exploring alternative models from STMicroelectronics' extensive portfolio of power management solutions.

ST2051BDR Documents

Download datasheets and manufacturer documentation for ST2051BDR

Datasheets :

ST2051