12 V Multipurpose Low RDSON eXtreme Switch

Block Diagram

Simplified Application Drawing



  • Operating voltage range from 6.0 V to 27 V, with sleep current < 5.0 μA, extended mode down to 4.5V
  • 40 A continuous current capability
  • PWM capability up to 60 kHz, with a duty cycle from 5% to 100%
  • Slew-rate control with an external capacitor
  • Overcurrent and overtemperature protection, undervoltage shutdown, and fault reporting
  • Reverse battery protection
  • Gate drive signal for external low side N-channel MOSFET with protection features
  • Output current monitoring
  • Temperature feedback


  • Operating voltage range of 6.0 V to 20 V, with sleep current < 5.0 μA, extended mode from 4.0 V to 28 V
  • Current capability up to 40 A steady state
  • 8.0 MHz 16-bit 3.3 V and 5.0 V SPI control and status reporting with daisy-chain capability
  • Programmable overcurrent trip level and overtemperature protection, undervoltage shutdown, and fault reporting
  • Enhanced -16 V reverse battery protection
  • Output current monitoring
  • Watchdog and configurable Fail-safe mode by hardware

Product Longevity Program

  • This product is included in the NXP Product Longevity Program ensuring a stable supply of products for your embedded designs. The MC33982 (MC12XS2), MC33984 (MC12XS2), and MC33988 (MC12XS2) are included in the 15-year program

Part numbers include: MC33981ABHFK, MC33981ADHFK, MC33981BHFK, MC33982CHFK, MC33982EHFK, MC33984CHFK, MC33988CHFK, MC33984EHFK.

Comparison Table


Product Datasheet # of outputs RDSon (mOhm) Package Suggested tool
MC33981 Datasheet Single 1 x 4.0 PQFN 16 -
MC33982 Datasheet Single 1 x 2.0 PQFN 16 KIT33982CEVBE
MC33984 Datasheet Dual 2 x 4.0 PQFN 16 KIT33984CEVBE
MC33988 Datasheet Dual 2 x 8.0 PQFN 16 KIT33988CEVBE


Quick reference to our documentation types.

1-5 of 16 documents

Show All


Quick reference to our board types.

3 hardware offerings

Engineering Services

3 engineering services

To find additional partner offerings that support this product, visit our Partner Marketplace.


What do you need help with?