The 33981 is a high-frequency, self-protected 4.0 mΩ RDS(ON) high-side switch used to replace electromechanical relays, fuses, and discrete devices in power management applications. The 33981 can be controlled by pulse-width modulation (PWM) with a frequency up to 60 kHz. It is designed for harsh environments, and it includes self-recovery features. The 33981 is suitable for loads with high inrush current, as well as motors and all types of resistive and inductive loads. The 33981 is packaged in a 12 x 12 nonleaded power-enhanced Power QFN package with exposed tabs.
The MC33981 is a high-frequency, self-protected 4.0 mΩ RDS(on) high-side switch intended for use in harsh environments where it can replace electromechanical relays, fuses, and discrete devices. It features PWM capability up to 60 kHz with a duty cycle from 5% to 100%, making it suitable for loads with high inrush current, motors, and resistive or inductive loads.
The device includes comprehensive protection features such as overcurrent, overtemperature, undervoltage shutdown, and fault reporting. It is available in a 12x12 nonleaded power-enhanced Power QFN package with exposed tabs and operates within an ambient temperature range of -40°C to 125°C.
| RDS(on) Maximum | 4.0 mΩ |
|---|---|
| PWM Frequency | up to 60 kHz |
| Continuous Output Current | 40 A |
| Operating Temperature Range | -40°C to 125°C |
| Package Type | 16 PQFN (12 x 12) |
The device supports PWM capability up to 60 kHz.
Yes, it includes overcurrent and overtemperature protection along with undervoltage shutdown.
The maximum continuous output current rating is 40 A.