Analog, Mixed Signal and Power Management Fact Sheet MC33996 16-output switch with SPI control Target Applications • Aircraft systems • Automotive systems • Marine applications • Robotic systems • Farm equipment • Actuator control • Small DC motor control • LED and incandescent lamp control • Other applications where low-side switch control is required MC33996 Simplified Application Diagram VDD 3.3 V/5.0 V VPWR 33996 VDD SOPWR VPWR MCU SCLK CS MISO MOSI PWM RST Overview The 33996 is a 16-output low-side switch with SCLK CS SI SO PWM RST a 24-bit serial input control. It is designed for a variety of applications including inductive, incandescent and LED loads. The serial peripheral interface (SPI) provides both input control and diagnostic readout. A pulse width modulation (PWM) control input is provided for pulse width modulation of multiple outputs OUT0 OUT1 OUT2 OUT3 OUT4 OUT5 OUT6 OUT7 OUT8 OUT9 OUT10 OUT11 OUT12 OUT13 OUT14 OUT15 at the same duty cycle. A dedicated reset GND input provides the ability to clear all internal Solenoid/Relay LED /8 registers and turn all outputs off. The 33996 directly interfaces with MCUs and is compatible with both 3.3 V and Performance 5.0 V CMOS logic levels. The 33996, in effect, Performance serves as a bus expander and buffer with fault management features that reduce the MCU’s fault management burden. VBAT Typical Values Outputs 16 RDSON @ 25ºC 0.55 Ω Operating Voltage, VPWR 5.0 V–27 V Operating Voltage, SOPWR 3.3 V–5.0 V Current Limit 1.2 A Each Output Control SPI with PWM Operating Temperature -40°C ≤ TA ≤ +125°C Junction Operating Temperature -40°C ≤ TJ ≤ +150°C Lamp Analog, Mixed Signal and Power Management Features Customer Benefits Questions • Designed to operate 5.0 V < VPWR < 27 V • Control of up to 16 loads using a single IC • Need to reduce the complexity of • 24-bit SPI for control and fault reporting, 3.3 V/5.0 V compatible and few external components controlling multiple loads? • Simple to hook up • Outputs are current limited (0.9 A to 2.5 A) to drive incandescent lamps • Need a single IC that can switch up to • Can directly interface with either 3.3 or 5.0 V microcontrollers using SPI • Output voltage clamp of +50 V during • Do you require a "smart" switch with internal protection features and fault • Reduced PC board space resulting inductive switching in enhanced application reliability and • ON/OFF control of open load detect current (LED application) lower costs pulse width modulated • Independent overtemperature protection PWM control? • Do you need an IC that supports 3.3 and • Diagnostic capability making for easy • RDSON of 0.55 Ω at 25°C typical diagnostic reporting? • Do some or all of your multiple loads need • Outputs controlled via SPI and able to be • VPWR standby current < 10 μA 16 incandescent lamp or inductive loads? 5.0 V microcontrollers? system troubleshooting • Output selectable for PWM control • Output ON short-to-VBAT and OFF short-to-ground /open detection • 32-pin exposed pad package for thermal performance • Pb-free packaging designated by suffix code EK 32 SOICW-EP Protection Protection Detect Overvoltage • Undervoltage • Overcurrent/SC • Overtemperature • Open Load • Limiting Shut Down Auto Retry Status Reporting • • • • • • • • • • • • • 0.65 mm Pitch 11.0 mm x 7.5 mm Body 5.7 mm x 4.6 mm Exposed Pad Ordering Information Device Temperature Range (TA) Package -40°C to +125°C 32 SOICW-EP (Pb-free) MCZ33996EK/R2 MC33996—Data Sheet Order Number SG1002—Analog Product Selector Guide SG187—Automotive Product Selector Guide Contact Sales for Evaluation Kit Availability Learn More: Freescale and the Freescale logo are trademarks or registered trademarks of Freescale Semiconductor, Inc. in the U.S. and other countries. All other product or service names are the property of their respective owners. © Freescale Semiconductor, Inc. 2008. Document Number: MC33996FS REV 3 For current information about Freescale products and documentation, please visit www.freescale.com.