Analog, Mixed Signal and Power Management MC33911 LIN System Basis Chip with DC Motor Pre-driver Applications MC33911 Simplified Application Drawing • Window Lift • Mirror switch • Door lock • Sunroof 33911 VBAT VSENSE HS1 VS1 VS2 • Light control Overview One 50 mA high side switch, that can be used to drive LEDs, and two 150 mA low side switches with output protection that can drive relays, used in DC motor applications. All outputs can be pulse-width modulated (PWM). Two high voltage inputs are available for use in contact monitoring, or as external wake-up inputs. These inputs can be used as high voltage Analog Inputs. The voltage on these pins is divided by a selectable ratio and available via an analog multiplexer. LIN INTERFACE L1 L2 LIN VDD PWMIN ADOUT0 LS1 M MCU MOSI MISO SCLK CS RXD TXD IRQ RST LS2 WDCONF LGND PGND AGND The 33911G5 is a Serial Peripheral Interface (SPI) controlled System Basis Chip (SBC), combining many frequently used functions in an MCU based system, plus a Local Interconnect Network (LIN) transceiver. The 33911G5 has a 5.0 V, 50 mA low dropout regulator with full protection and reporting features. The device provides full SPI readable diagnostics and a selectable timing watchdog for detecting errant operation. The LIN Protocol Specification 2.0 and 2.1 compliant LIN transceiver has waveshaping circuitry that can be disabled for higher data rates. The LIN Physical Layer included inside the 33911G5 is also compliant with the SAEJ2602 Rev. 2, protocol specification approved at many car OEMs. Features Parametric Table • Full-duplex SPI interface at frequencies up to 4.0 MHz Part Number • LIN transceiver capable of up to 100 kbps with wave shaping Max Input Voltage MC33911G5AC 40V MC34911G5AC • One 50 mA high side capable to crive LEDs Development Tools • Two 150 mA low side protected switches to Part Number drive relays used in DC motor control applications KIT33912G5DGEVME • Two high voltage analog/logic Inputs Output Current Internally Limited (thermal protection) Temperature Range Package -40°C to 125°C 32 LQFP -40°C to 85°C Description Easy to use kit that includes a friendly graphical interface, an MC33912G5EVB, and a USB to SPI adaptor. • Configurable window watchdog Documentation • 5.0 V low drop regulator with fault detection and low voltage reset (LVR) circuitry Document Number Title Description MC33911 Data Sheet Presents the specifications for the product SG1002 Selector Guide Analog and power management device comparison SG187 Selector Guide Automotive device comparison Questions • Q: What are the 33911G5 key functions? • A: The device integrates a 5.0 V, 50 mA voltage regulator, a SPI interface for diagnostics and low power management, a LIN module, one High Side, two Low Sides, and two Wake-up inputs. • Q: What are the key features? • A: The 33911G5 offers a configurable window watchdog, a low power mode with cyclic wake up feature, and a selectable LIN slew rate. The two low sides switches are able to drive resistive and inductive loads like a DC relay, in the case of a DC motor. The high side and low sides have PWM capability up to 10 kHz, and overtemperature and current limitation protection. The device allows the monitoring of the battery voltage, wake-up pins voltage, and the die temperature. Benefits • Reduced usage of external components due to the high EMI and ESD performance • Very low emissive device • Official release at many car OEMs • Internal 5.0 V regulator to supply microcontroller • Fail Safe protection • Low Power Management to minimize the battery discharge • Able to control an external relay Freescale Semiconductor is a leading provider for over 25 years of highperformance products using SMARTMOS™ technology that combines digital, power and standard analog functions. The company supplies analog and power management ICs for the automotive, consumer, networking and industrial markets. Freescale’s analog and power ICs complement our broad portfolio of micro controllers, microprocessors, ZigBee® technology, digital signal processors, sensors, with development tools and support to provide system solutions to customers. • Q: What is the compliancy of the device? • A: The product is LIN2.1 and SAEJ2602-2 compliant. • Q: What are the EMC performances of the device? • A: The 33911G5 succesfully passes the "Common EMC requirements on LIN interfaces" specification defined by Audi, BMW, Daimler, Porsche, and Volkswagen. The LIN module shows a high robustness against ESD-61000-4-2 (±11kV) without a bus capacitor, and a very low level in emission (50 dBμV max at low frequency). Learn More: For current information about Freescale products, please visit www.freescale.com. Freescale™ and the Freescale logo are trademarks of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners. © Freescale Semiconductor, Inc., 2009 All rights reserved. Document Number: MC33911FS, Rev. 1.0