Document Number: MC33812 Freescale Semiconductor Rev. 5.0, 7/2010 Advance Information Multifunctional Ignition and 33812 Injector Driver The 33812 is an engine control analog power IC intended for motorcycle and other single/dual cylinder small engine control applications. The IC consists of three integrated low side drivers, one SMALL ENGINE CONTROL IC pre-driver, a +5.0 V, voltage pre-regulator, an MCU watchdog circuit, an ISO 9141 K-Line interface, and a parallel interface for MCU communication. The three low side drivers are provided for driving a fuel injector, a lamp or LED, and a relay or other load. The pre-driver is intended to drive either an Insulated Gate Bipolar Transistor (IGBT) or a bipolar Darlington transistor to control an ignition coil. Features: Designed to operate over the range of ~4.7 V V 36 V EK Pb-FREE SUFFIX PWR 98ASA10556D Fuel Injector driver - Current Limit - 4.0 A Typical 32 Pin SOICW EP Ignition pre-driver can drive IGBT or Darlington bipolar junction transistors ORDERING INFORMATION Ignition pre-driver has independent high and low side outputs Relay driver - Current Limit - 4.0 A Typical Temperature Device Package Lamp driver- Current Limit - 1.5 A Typical Range (T ) A All external outputs protected against short to battery, over-current MCZ33812EK/R2 Ignition and other drivers protected against over-temperature -40 to 125C 32 SOICW-EP *MCZ33812AEK/R2 Interfaces directly to MCU Using 5.0 V parallel interface VCC voltage pre-regulator provides +5.0 V power for the MCU *Note: AEC qualified for automotive applications MCU Power On RESET generator MCU watchdog timer circuit with parallel refresh/time setting line Independent fault annunciation outputs for ignition, injector and relay drivers ISO-9141 K-Line transceiver for communicating diagnostic messages Pb-free packaging designated by suffix code EK 33812 V V BAT BAT MIL VPWR LAMPOUT PNP V +5 V BAT RELAY OR VCCREF OTHER LOAD ROUT VCC VCCSENS INJECTOR V GPIO LAMPIN BAT V BAT GPIO INJOUT RIN +5 V RESET V RESET IGNSUP PWR GPIO WDRFSH IGNFB INJIN GPIO MCU IGNOUTH GPIO INJFLT (IGBT DRIVER SHOWN) GPIO IGNIN IGNOUTL IGNFLT GPIO RELFLT GPIO MRX RXD TXD MTX TM EN, TEST2 ISO9141 ISO9141 WD INH PGND1,2 DGND Note: Surge Voltage protection recommended on VPWR Figure 1. 33812 Simplified Application Diagram * This document contains certain information on a new product. Specifications and information herein are subject to change without notice. Freescale Semiconductor, Inc., 2010. All rights reserved.33812 V V BAT BAT VPWR MIL PNP LAMPOUT V +5 V BAT RELAY OR VCCREF OTHER LOAD ROUT VCC VCCSENS INJECTOR V GPIO BAT LAMPIN V BAT INJOUT GPIO RIN +5 V +5 V RESET RESET IGNSUP GPIO WDRFSH IGNFB GPIO INJIN MCU IGNOUTH INJFLT GPIO (DARLINGTON DRIVER SHOWN) GPIO IGNIN IGNOUTL IGNFLT GPIO RELFLT GPIO RXD MRX TXD MTX TM EN, TEST2 ISO9141 ISO9141 WD INH PGND1,2 DGND Figure 2. 33812 Simplified Application Diagram (Darlington Mode) 33812 Analog Integrated Circuit Device Data 2 Freescale Semiconductor