STMicroelectronics

ST890BD

ST890BD Description

The ST890BD is a high-side power switch designed by STMicroelectronics, a leading semiconductor manufacturer. This device is part of the Power Management Integrated Circuit (PMIC) category and is known for its robust performance and versatile applications. The ST890BD features a general-purpose switch type with a 1:1 input-to-output ratio, making it suitable for a wide range of power management tasks. It operates within a load voltage range of 2.7V to 5.5V and can handle a maximum output current of 1.2A. The device is housed in an 8SO package and is available in a tube packaging format, which is ideal for surface-mount applications.

ST890BD Features

• High-Side Output Configuration: The ST890BD is designed with a high-side output configuration, which simplifies circuit design and enhances reliability.
• Robust Fault Protection: This power switch includes adjustable current limiting and over-temperature protection, ensuring safe operation under various load conditions.
• Low On-Resistance: With a typical on-resistance (Rds On) of 75mOhm, the ST890BD minimizes power loss and heat generation, contributing to high efficiency.
• Compliance and Reliability: The ST890BD is REACH unaffected and RoHS3 compliant, meeting stringent environmental and safety standards. It also has a moisture sensitivity level (MSL) of 3, allowing for a 168-hour exposure period, which is beneficial for manufacturing processes.
• Versatile Interface: The device supports an on/off interface, making it easy to integrate into various systems.

ST890BD Applications

The ST890BD is ideal for applications requiring efficient power management and reliable switching. Its high-side configuration and robust protection features make it suitable for:

• Consumer Electronics: Ideal for portable devices, smartphones, and tablets where power efficiency and compact design are critical.
• Industrial Equipment: Suitable for industrial control systems and automation equipment that require reliable power switching.
• Automotive Applications: Given its robustness and compliance with industry standards, the ST890BD can be used in automotive electronics for power distribution and control.
• Power Supplies: The device can be integrated into power supply units for efficient power management and protection against overloads.

Conclusion of ST890BD

The ST890BD, despite being marked as obsolete, remains a reliable and efficient choice for power management applications. Its high-side configuration, low on-resistance, and robust fault protection features make it stand out in the market. The device's compliance with environmental and safety standards ensures its suitability for a wide range of industries. While newer models may offer additional features, the ST890BD continues to provide a cost-effective and reliable solution for power switching needs.