NCV8403DTRKG

Overview

The NCV8403DTRKG is a self-protected low-side power switch IC manufactured by onsemi, designed for automotive and industrial applications. It integrates a single N-channel MOSFET with comprehensive protection features including overcurrent limiting, thermal shutdown, and overvoltage clamping. The device operates within a supply voltage range of 4.5 V to 45 V and supports a continuous load current of up to 14 A. Key electrical parameters include a maximum drain-source breakdown voltage of 42 V and a typical on-resistance of 53 mΩ. It functions with non-inverting logic inputs compatible with 3.3 V and 5 V systems. The component is qualified to AEC-Q101 standards and operates across an extended junction temperature range from -40°C to +150°C.

Feature Summary

• Integrates a single N-channel power switch with built-in self-protection mechanisms against overcurrent, overtemperature, and inductive load spikes.
• Features automatic restart capability following fault conditions, enhancing system reliability without manual intervention.
• Supports high-current switching capabilities suitable for driving heavy loads such as lamps, relays, and solenoids.
• Designed with robust dV/dt immunity to ensure stable operation in electrically noisy environments.

Applications

• Automotive lighting systems including interior/exterior lamps and LED drivers
• Relay and solenoid control circuits in vehicle body electronics
• Small motor drive applications for actuators and pumps
• Industrial load switching in PLC output modules and 24 V distribution systems

Procurement Notes

Verify the specific suffix DTRKG corresponds to the tape and reel packaging configuration required for your assembly line. Confirm that the AEC-Q101 qualification aligns with your automotive grade requirements. Ensure input logic levels match your microcontroller output voltages. Check for any recent product change notices regarding pinout or electrical characteristics before finalizing the design.

Selection Notes

Select this component when a single-channel low-side switch with integrated protection is needed. It is suitable for replacing discrete MOSFETs and external protection diodes to reduce board space. Consider the SOT-223 package for its thermal performance and mounting flexibility. Evaluate the 14 A current rating against peak load demands to ensure adequate headroom for transient currents.

Part Context

This part belongs to the NCV8403A family of self-protected low-side drivers from onsemi. The series is widely used in automotive body control modules and industrial power distribution units. It serves as a direct replacement for older discrete solutions, offering higher integration and improved reliability. The NCV prefix indicates automotive-grade qualification, distinguishing it from commercial variants.

Replacement Considerations

Direct substitutes include other parts from the NCV8403A family such as NCV8403ASTT1G. Verify pin compatibility and electrical specifications before swapping with similar devices from different manufacturers. Ensure thermal management requirements are met if using alternative packages.

FAQ

What protection features are included in the NCV8403DTRKG?

The device includes fixed current limiting, thermal shutdown with automatic restart, and overvoltage clamping to protect against inductive load spikes.

Is the NCV8403DTRKG suitable for automotive applications?

Yes, it is qualified to AEC-Q101 standards and is designed for use in automotive environments with an operating temperature range up to 150°C.

What is the input logic compatibility of this IC?

The NCV8403DTRKG accepts non-inverting logic inputs that are compatible with both 3.3 V and 5 V logic levels.