ST2044BDR

Overview

The ST2044BDR is a dual power distribution switch manufactured by STMicroelectronics. It integrates two independent 1:2 N-channel MOSFETs within a single 16-SOIC package. The device provides a continuous output current of 500mA per channel with a typical on-resistance (RdsOn) of 80mOhm. Key protection features include fixed current limiting, over-temperature shutdown, and under-voltage lockout (UVLO). The input configuration is non-inverting, allowing for straightforward control logic integration in power management applications.

Feature Summary

• Integrates two independent 1:2 N-channel power distribution switches
• Provides integrated fault protection including current limiting and thermal shutdown
• Features non-inverting input logic for simple interface compatibility

Applications

• Power distribution networks in embedded systems
• Load switching in USB peripheral interfaces
• Current-limited power routing in industrial control modules

Procurement Notes

Verify the specific suffix 'BD' confirms the 16-SOIC package and tape-and-reel shipping format. Confirm that the manufacturer designation aligns with STMicroelectronics official documentation to ensure component authenticity. Cross-reference the datasheet revision date against your bill of materials to guarantee parameter consistency. Ensure environmental compliance markings match project requirements before finalizing procurement orders.

Selection Notes

Select this component when dual-channel load switching with integrated protection is required. The 500mA current rating suits low-power peripheral distribution rather than high-current motor drives. The 80mOhm RdsOn offers a balance between conduction loss and cost. Consider the 16-SOIC footprint for PCB layout constraints. Evaluate if the non-inverting control logic matches the system's microcontroller output capabilities.

Part Context

This part belongs to STMicroelectronics' family of current-limited power distribution switches. These devices are designed to replace discrete MOSFETs and protection circuits, reducing board space and design complexity. The series typically targets applications requiring reliable power management with built-in safety mechanisms against short circuits and overheating.

Replacement Considerations

Check for direct pin-compatible alternatives from STMicroelectronics or other manufacturers offering similar 500mA dual-channel specifications. Verify that substitute parts maintain identical RdsOn values and protection thresholds to ensure circuit performance parity without redesign.