Analog, Mixed Signal and Power Management MC33981 Single High Side Switch (4.0 mOhm), PWM clock up to 60 kHz Applications • • • • • • MC33981 Simplified Application Drawing Automotive and robotic systems Marine systems Farm equipment Actuator controls Fractional horsepower DC motor controls Applications where high side switch control is required VDD VPWR VDD 33981 CONF Overview The MC33981 is a high frequency, selfprotected 4.0 m RDS(ON) high side switch used to replace electromechanical relays, fuses, and discrete devices in power management applications. The MC33981 can be controlled by pulsewidth modulation (PWM) with a frequency up to 60 kHz. It is designed for harsh environments, and it includes self-recovery features. The MC33981 is suitable for loads with high inrush current, as well as motors and all types of resistive and inductive loads. The MC33981 is packaged in a 12 x 12 mm non-leaded power-enhanced PQFN package with exposed tabs. MCU I/O FS I/O INLS I/O EN I/O A/D INHS TEMP A/D CSNS VPWR CBOOT OUT DLS GLS OCLS SR GND Performance Typical Values Outputs 1 RDSON at 25 °C 3.7 m Operating Voltage 6.0 - 27 V Peak Current 100 A PWM Input Control 60 kHz ESD 2000 V Ambient Operating Temperature -40 °C TA 125 °C Junction Operating Temperature -40 °C TJ 150 °C M Features Protection • Single 4.0 m RDS(ON) maximum high side Protection Detect Shut Down Auto Retry switch • PWM capability up to 60 kHz with duty cycle Under-voltage from 5 % to 100 % Over-current / SC • Very low standby current Over-temperature • Slew-rate control with external capacitor • Over-current and over-temperature Short to Ground protection, under-voltage shutdown, and Short to VPWR fault reporting \ • Reverse battery protection Ordering Information • Gate drive signal for external low side Nchannel MOSFET with protection features Device • Output current monitoring Temperature range (TA) (for Tape and Reel, • Temperature feedback add an R2 suffix) Benefits • Economical high current switch requiring few external parts and simple hook-up • Can be used by microprocessors in highside applications • High efficiency, low ON resistance switching • Reduced PC board space resulting in enhanced application reliability and lower costs • Numerous internal protections • Current sense accuracy versus temperature • Slew-rate control to optimize EMC behavior MC33981BHFK -40 °C TA 125 °C MC33981ABHFK Status Reporting Package 16 PQFN Documentation Document Number Title Description MC33981 Data Sheet Single High Side Switch (4.0 mOhm), PWM clock up to 60 kHz SG1002 Selector Guide Analog Product Selector Guide SG187 Selector Guide Automotive Product Selector Guide AN2467 Application Note Power Quad Flat No-lead Package Questions • Do you need a high side switch capable of typically switching 30 A? • Do you have limited PC board space available for load control? • Do you need an easy-to-design high side switch capable of high-speed PWM switching? (Bottom View) 16 PQFN 98ARL10521D Learn More: F or current inform ation about Freescale products, please visit www.freescale.com. Freescale and the Freescale logo are trademarks of Freescale Semiconductor, Inc., Reg. U.S. Pat & Tm. Off. SMARTMOS is a trademark of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners. © Freescale Semiconductor, Inc., 2009-2012. All rights reserved. Document Number: MC33981FS Rev 6.0