NUD3112LT1

Overview

The NUD3112LT1G is an integrated relay and inductive load driver manufactured by onsemi. It combines a MOSFET switch, ESD protection, and Zener clamping within a single SOT-23 package. The device accepts logic-level inputs for direct interfacing with microcontrollers or logic gates. Designed to switch inductive loads such as relays and solenoids without requiring external freewheeling diodes, it simplifies circuit design while providing robust protection against voltage transients.

Feature Summary

• Integrates MOSFET switching capability with internal ESD protection and Zener clamping
• Accepts logic-level input signals for direct drive from microcontrollers and logic gates
• Eliminates the need for external freewheeling diodes when switching inductive loads

Applications

• Switching of electromagnetic relays
• Control of solenoid actuators
• Driving small DC motors
• Inductive load management in automotive systems

Procurement Notes

Verify the exact suffix (e.g., LT1G vs LT1) against official datasheets, as variations may exist. Confirm RoHS compliance status and specific packaging configurations directly with authorized distributors. Ensure the component matches the required voltage ratings and current capabilities for the intended application before finalizing procurement orders.

Selection Notes

Select this component for applications requiring compact integration of load switching and protection. It is suitable where space constraints prevent the use of discrete MOSFETs and external flyback diodes. Consider the logic level compatibility with the driving controller and ensure the thermal performance meets the system requirements for continuous operation.

Part Context

This part belongs to the family of integrated load drivers designed by onsemi. These devices are engineered to simplify the interface between low-voltage control logic and higher-power inductive loads. The series focuses on reducing bill-of-materials count and board space by combining essential power and protection functions into a single surface-mount package.

Replacement Considerations

NUD3105LT1G

FAQ

Does the NUD3112LT1G require an external freewheeling diode?

No, the device integrates necessary protection features, eliminating the need for an external freewheeling diode when switching inductive loads.

What type of input signal does the NUD3112LT1G accept?

It accepts logic-level input signals, allowing direct connection to microcontrollers, inverters, and standard logic gates.