Analog, Mixed Signal and Power Management MC33988 Dual Intelligent High-current Self-protected Silicon High Side Switch (8.0 mOhm) Applications MC33988 Simplified Application Drawing • Aircraft and marine systems • • • • • Automotive and robotic systems Farm equipment Industrial actuator controls Lamp and inductive load controls DC motor control applications requiring diagnostics • Applications where high side switch control is required VDD VDD VPWR 33988 VPWR VDD Overview The MC33988 is a dual self-protected 8.0 mΩ silicon switch used to replace electromechanical relays, fuses, and discrete devices in power management applications. The MC33988 is designed for harsh environments, and it includes selfrecovery features. The device is suitable for loads with high inrush current, as well as motors and all types of resistive and inductive loads. Programming, control and diagnostics are implemented via the serial peripheral Interface (SPI). A dedicated parallel input is available for alternate and pulse-width modulation (PWM) control of each output. SPI-programmable fault trip thresholds allow the device to be adjusted for optimal performance in the application. The MC33988 is packaged in a powerenhanced 12 x 12 mm nonleaded PQFN package with exposed tabs. VDD FS I/O WAKE SO SI SCLK MCU GND I/O SCLK CS CS SI SO I/O RST I/O INO I/O IN1 A/D HS1 HS0 LOAD LOAD CSNS FSI GND Performance Typical Values Outputs 2 RDSON at 25 °C 7.0 mΩ Operating Voltage 6.0 - 27 V Peak Current 50 A PWM Input Control 150 Hz / 1.0 kHz ESD ± 2000 V Ambient Operating Temperature -40 °C ≤ TA ≤ 125 °C Junction Operating Temperature -40 °C ≤ TJ ≤ 150 °C Features Protection • Dual 8.0 mΩ max high side switch with parallel input or SPI control • 6.0 to 27 V operating voltage with standby currents < 5.0 μA • Output current monitoring with two SPIselectable current ratios • SPI control of over-current limit, overcurrent fault blanking time, output OFF open load detection, output ON/OFF control, watchdog timeout, slew-rates, and fault status reporting • SPI status reporting of over-current, open and shorted loads, over-temperature, under-voltage and over-voltage shutdown, fail-safe pin status, and program status • Enhanced -16 V reverse polarity VPWR protection Protection Benefits MC33988CHFK • Offers an economical high-current switch requiring few external parts and is simple to hook up Development Tools Detect Shut Down Auto Retry Status Reporting Over-voltage • • • • Under-voltage • • • Over-current / SC • • • Open Load • • Output Current • • Over-temperature • • Short-to-Ground • • • • • Ordering Information Device Temperature range (TA) (for Tape and Reel, add an R2 suffix) Package -40 ≤ TA ≤ 125 °C 16 PQFN Part Number Description • Can be used with micro processors having SPI in high side switching applications KIT33988CEVBE Evaluation Kit - 33988, Dual 8mΩ Intelligent High-current Self-protected Silicon High Side Switch • High efficiency, low ON resistance switching Documentation • Reduced PC board space resulting in enhanced application reliability and lower costs • Numerous internal protection and programmable performance features • Output internally clamped to -17 V for inductive load switching applications • Two integrated high-power switches in the same solution Document Number Title Description MC33988 Data Sheet Dual intelligent high-current self-protected silicon high side switch (8.0 mΩ) SG1002 Selector Guide Analog Product Selector Guide SG187 Selector Guide Automotive Product Selector Guide AN2467 Application Note Power Quad Flat No-lead Package AN3274 Application Note eXtreme Switch Protection Guidelines Questions • Need a dual high side switch capable of switching 50 A per output? • Need a micro controller-controlled high side switch with a programmable watchdog to monitor the MCU? • Do you have limited PC board space available for load control? (Bottom View) 16 PQFN 98ARL10521D • Need an easy-to-design high side switch with internal charge pump capable of low speed PWM switching with a dedicated parallel input? Learn More: F or current inform ation about Fre esca le produ cts, please vi sit information www.freescale.com. Learn More: For current 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: MC33988FS Rev 9.0