ST890BD

Overview

The ST890BD is a low-voltage, P-Channel MOSFET power switch designed for high-side load switching applications. It operates within an input voltage range of 2.7V to 5.5V and provides a continuous current capability of 1.2A. The device integrates current limiting and thermal shutdown protection mechanisms to safeguard connected loads. It is housed in an 8-SOIC package and supports an operating temperature range from -40°C to 85°C (TA).

Feature Summary

• Integrates thermal shutdown protection for enhanced reliability under fault conditions.
• Features built-in current limiting to protect against overload scenarios.
• Designed specifically for high-side load switching applications.

Applications

• High-side load switching in low-voltage electronic systems.
• Power distribution management in portable devices.
• Protection circuits for peripheral load control.

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific suffix 'BD' corresponds to the required package and tape-and-reel configuration. Check lifecycle status as obsolete items may require alternative sourcing strategies. Ensure compatibility with existing PCB footprints and thermal management requirements before procurement.

Selection Notes

Select this component when a P-Channel high-side switch with integrated protection is required. Ensure the system voltage remains within the 2.7V to 5.5V operational window. Verify that the 1.2A current limit aligns with the maximum load requirements. Consider the 8-SOIC package constraints for board space and thermal dissipation needs during design integration.

Part Context

The ST890BD belongs to STMicroelectronics' family of low-voltage power distribution switches. These components are engineered to simplify power management by combining switching functionality with essential protection features. The series targets applications requiring reliable load control in compact, low-voltage environments.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. As the component is listed as obsolete, consult official STMicroelectronics resources for potential pin-compatible or functionally equivalent alternatives.

FAQ

What is the input voltage range for the ST890BD?

The ST890BD operates within an input voltage range of 2.7V to 5.5V.

Does the ST890BD include protection features?

Yes, it includes current limiting and thermal shutdown protection.