MC33981ABHFK

Description：IC PWR SWITCH N-CHAN 1:1 16QFN
Series：-
Mfr：NXP USA Inc.
Package：Tray

SKU:40c1d3114526 Category: Power Distribution Switches, Load Drivers Brand: NXP USA Inc.

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Product introduction

Product Detailed Parameters

Description：IC PWR SWITCH N-CHAN 1:1 16QFN
Series：-
Mfr：NXP USA Inc.
Package：Tray
Switch Type：General Purpose
Number of Outputs：1
Ratio - Input:Output：1:01
Output Configuration：High Side
Output Type：N-Channel
Interface：PWM
Voltage - Load：6V ~ 27V
Voltage - Supply (Vcc/Vdd)：-
Current - Output (Max)：40A
Rds On (Typ)：4mOhm
Input Type：-
Features：Slew Rate Controlled
Fault Protection：Current Limiting (Fixed), Over Temperature
Operating Temperature：-40°C ~ 150°C (TJ)
Mounting Type：Surface Mount
Supplier Device Package：16-HQFN (12x12)
Package / Case：16-PowerQFN
Grade：-
Qualification：-

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MC33981ABHFK

Overview

The MC33981ABHFK is a high-frequency, self-protected single high-side switch designed for power management applications. It features a maximum on-resistance of 4.0 mΩ and supports PWM clock frequencies up to 60 kHz with duty cycles ranging from 5% to 100%. The device provides comprehensive protection mechanisms including overcurrent, overtemperature, undervoltage shutdown, reverse battery protection, and fault reporting. It also includes slew rate control via an external capacitor, gate drive signal output for external low-side MOSFETs, output current monitoring, and temperature feedback capabilities.

Feature Summary

Single high-side switch with integrated self-protection features
Supports high-frequency PWM operation up to 60 kHz
Comprehensive fault protection including overcurrent, overtemperature, and undervoltage shutdown
Provides gate drive signal and temperature feedback for system monitoring

Applications

Power management systems replacing electromechanical relays
Automotive load switching applications
Industrial control systems requiring high-current switching

Procurement Notes

Verify the specific suffix ABHFK against official NXP documentation to confirm package type and tape-and-reel specifications. Ensure compatibility with required operating voltage ranges and thermal management requirements for the intended application environment. Cross-reference with the latest datasheet revision for any updates in pin configuration or electrical characteristics.

Selection Notes

Select this component when a single-channel high-side switch with integrated protection is required. Consider the 4.0 mΩ on-resistance for efficiency and the 60 kHz PWM capability for noise-sensitive applications. Evaluate the need for external slew rate control and fault reporting interfaces before finalizing the design.

Part Context

The MC33981 series belongs to NXP's portfolio of intelligent power switches. These devices are engineered to replace traditional discrete components and relays, offering higher reliability and reduced board space. The ABHFK variant specifically denotes a particular package and packaging configuration within this family.