MAX4789EUK+T

Current Regulation/Management Overview

The MAX4789EUK+T is a single-channel current-limit switch IC designed for power distribution applications. It features an output current capability of 100 mA with a fixed current limit of 200 mA. The device exhibits a maximum on-resistance of 400 mOhms, ensuring efficient power transfer during normal operation. Key timing parameters include a maximum turn-on time of 100 us and a maximum off-time of 40 ns. This component operates within standard industrial temperature ranges and is housed in a compact SOT-23-5 package.

Current Regulation/Management Feature Summary

• Provides precise current limiting to protect downstream circuits from overcurrent conditions
• Features low on-resistance for minimal voltage drop and power loss during conduction
• Offers controlled turn-on and fast turn-off times to manage inrush current and system stability

Current Regulation/Management Applications

• Power distribution systems requiring individual channel protection
• Current-limited switching for sensitive electronic loads
• Overcurrent protection in portable and battery-powered devices

Current Regulation/Management Procurement Notes

Verify availability status directly with authorized distributors or the manufacturer, as supply constraints may apply. Confirm that the specific suffix matches the required tape-and-reel packaging configuration. Ensure compatibility with existing PCB footprints and thermal management requirements before finalizing procurement decisions.

Current Regulation/Management Selection Notes

Select this component when a single-channel solution with a 200 mA hard limit is required. Evaluate the 400 mOhm on-resistance against allowable voltage drop specifications. Consider the 100 us turn-on time for inrush current management needs. Verify that the SOT-23-5 package fits the design constraints.

Current Regulation/Management Part Context

This part belongs to the Maxim Integrated current-limit switch family, designed for robust power management. It integrates protection circuitry into a small form factor, suitable for space-constrained designs. The device simplifies board layout by combining switching and protection functions in a single package.

Current Regulation/Management Replacement Considerations

Consult official cross-reference lists for verified substitutes. Ensure any replacement maintains identical pinout, current limit values, and package dimensions to avoid redesign.