Document Number: MC33988 Freescale Semiconductor Rev. 8.0, 06/2012 Technical Data Dual Intelligent High-current Self-protected Silicon High Side 33988 Switch (8.0 mOhm) The 33988 is a dual self-protected 8.0 m silicon switch used to HIGH SIDE SWITCH replace electromechanical relays, fuses and discrete devices in power management applications. The 33988 is designed for harsh environment and includes self-recovery 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. BOTTOM VIEW The 33988 is packaged in a power-enhanced 12 x 12 mm nonleaded PQFN package with exposed tabs. FK SUFFIX 98ARL10521D Features 16-PIN PQFN Dual 8.0 m max high side switch with parallel input or SPI control 6.0 V to 27 V operating voltage with standby currents < 5.0 A Output current monitoring with two SPI-selectable current ratios SPI control of over-current limit, over-current fault blanking time, ORDERING INFORMATION output OFF open load detection, output ON/OFF control, Device watchdog timeout, slew-rates, and fault status reporting Temperature (For Tape and Reel, Package SPI status reporting of over-current, open and shorted loads, over- Range (T ) A add an R2 Suffix) temperature, under-voltage and over-voltage shutdown, fail-safe pin status, and program status MC33988CHFK - 40 C to 125 C 16 PQFN Enhanced -16 V reverse polarity V protection PWR V V V V DD DD DD PWR 33988 VDD VPWR GND I/O FS WAKE I/O HS1 SO SI SCLK SCLK CS CS MCU HS0 SO SI LOAD I/O RST INO I/O I/O IN1 LOAD CSNS A/D FSI GND Figure 1. 33988 Simplified Application Diagram Freescale Semiconductor, Inc. reserves the right to change the detail specifications, as may be required, to permit improvements in the design of its products. Freescale Semiconductor, Inc., 2010-2012. All rights reserved.INTERNAL BLOCK DIAGRAM INTERNAL BLOCK DIAGRAM VPWR VDD V IC Internal Over-voltage I UP Regulator Protection CS Programmable SO Selectable Slew Switch Delay Rate Gate Drive SPI 0ms 525ms 3.0 MHz HS0 Selectable Over-current SI High Detection SCLK 50A or 37.5A FS IN 0:1 Selectable Over- Selectable Over-current current Low Detection Low Detection RST Logic Blanking Time 3.75A 12.5A WAKE 0.15ms155ms Open Load Detection Over-temperature Detection HS0 I R DWN DWN HS1 HS1 Programmable V IC Watchdog 310ms2500ms I Selectable UP Output Current Recopy FSI 1/10250 or 1/20500 GND CSNS Figure 2. 33988 Simplified Internal Block Diagram 33988 Analog Integrated Circuit Device Data 2 Freescale Semiconductor