ST2054BDR

Overview

The ST2054BDR is a discontinued intelligent high-side power switch manufactured by STMicroelectronics. It features four N-channel outputs with a 2 x 1:2 input-to-output ratio, housed in a 16-SOIC package. The device operates within a load voltage range of 2.7V to 5.5V and supports a maximum output current of 500mA per channel. Key electrical characteristics include a typical on-resistance of 80 milliohms and non-inverting input logic. Integrated protection mechanisms provide fixed current limiting, over-temperature shutdown, and under-voltage lockout (UVLO). The component functions without a separate Vcc supply and is rated for junction temperatures between -40°C and 125°C.

Feature Summary

• Integrates four high-side N-channel switches with independent diagnostic capabilities
• Includes comprehensive fault protection against over-current, thermal overload, and low voltage conditions
• Operates directly from system load voltage without requiring an auxiliary supply rail

Applications

• Industrial automation control systems
• Automotive body electronics modules
• General-purpose load switching in embedded systems

Procurement Notes

Verify component status carefully as the ST2054BDR is officially listed as discontinued. Confirm availability through authorized distributors or secondary market suppliers. Ensure that any replacement strategy accounts for the end-of-life status to prevent future supply chain disruptions. Validate that alternative components meet all original electrical and mechanical specifications before integration.

Selection Notes

Select this component for applications requiring compact high-side switching with integrated diagnostics. The 16-SOIC package suits surface-mount designs with space constraints. Consider the 2.7V to 5.5V operating range when designing power rails. Evaluate the 500mA current limit against load requirements to ensure adequate headroom during normal operation and transient events.

Part Context

This part belongs to the ST2054 family of intelligent power switches designed for robust load management. It complements STMicroelectronics' portfolio of PMIC solutions for industrial and automotive sectors. The device simplifies circuit design by combining power switching with safety features in a single integrated circuit, reducing bill of materials complexity compared to discrete solutions.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation due to the discontinued status. Engineers should consult official cross-reference guides or contact STMicroelectronics technical support for validated alternatives that match the pinout and electrical parameters.

FAQ

Does the ST2054BDR require a separate Vcc supply voltage?

No, the device does not require a separate Vcc or Vdd supply voltage; it operates directly from the load voltage.

What specific fault protections are included in the ST2054BDR?

The device includes fixed current limiting, over-temperature shutdown, and under-voltage lockout (UVLO) for each channel.