NCV8403STT1G

Description：IC DRIVER LOW SIDE SOT-223-4
Series：-
Mfr：onsemi
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:68fc832b7919 Category: Power Distribution Switches, Load Drivers Brand: onsemi

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Product introduction

Product Detailed Parameters

Description：IC DRIVER LOW SIDE SOT-223-4
Series：-
Mfr：onsemi
Package：Tape & Reel (TR),Cut Tape (CT)
Switch Type：-
Number of Outputs：1
Ratio - Input:Output：-
Output Configuration：Low Side
Output Type：-
Interface：-
Voltage - Load：-
Voltage - Supply (Vcc/Vdd)：-
Current - Output (Max)：-
Rds On (Typ)：53mOhm
Input Type：Non-Inverting
Features：-
Fault Protection：-
Operating Temperature：-40°C ~ 150°C
Mounting Type：Surface Mount
Supplier Device Package：SOT-223 (TO-261)
Package / Case：TO-261-4, TO-261AA
Grade：Automotive
Qualification：AEC-Q101

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NCV8403STT1G

Overview

The NCV8403STT1G is a self-protected low-side power switch IC from onsemi, designed for automotive and industrial load distribution. It features an integrated N-channel MOSFET with a maximum continuous current of 15 A and a typical on-resistance of 53 mΩ. The device operates within a supply voltage range of 5 V to 34 V and supports 3.3 V/5 V logic inputs. Key electrical parameters include a drain-source breakdown voltage of 42 V and a maximum junction temperature of 150 °C. It is housed in a SOT-223-4 package and holds AEC-Q101 qualification.

Feature Summary

Integrated overcurrent protection with fixed current limiting and short-circuit prevention
Thermal shutdown mechanism that automatically restarts upon cooling
Built-in clamp circuit to suppress inductive load voltage spikes
Enhanced dV/dt immunity for improved system stability

Applications

Automotive lighting systems
Relay and solenoid driving
Small motor control applications
Industrial 24 V load switching
PLC output modules

Procurement Notes

Verify the specific suffix 'STT1G' against official datasheets to confirm package type and reel quantity. Ensure compatibility with AEC-Q101 automotive standards if used in vehicle applications. Cross-reference pinout configurations between SOT-223-3 and SOT-223-4 variants to prevent integration errors during PCB design and assembly processes.

Selection Notes

Select this component for high-current low-side switching where robust protection is required. Consider the 15 A current rating and 53 mΩ resistance for efficiency needs. Evaluate thermal management requirements given the 1.9 W power dissipation capability. Confirm logic level compatibility with host microcontrollers before implementation in the final circuit design.

Part Context

This part belongs to the NCV8403A series of smart FETs. It serves as a replacement for mechanical relays and discrete protection circuits. The series provides integrated solutions for load distribution, combining switching capabilities with diagnostic and protection features in a compact surface-mount package suitable for space-constrained designs.