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Freescale Semiconductor Electronic Components Datasheet

33812 Datasheet

Multifunctional Ignition and Injector Driver

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33812 pdf
Freescale Semiconductor
Advance Information
Document Number: MC33812
Rev. 5.0, 7/2010
Multifunctional Ignition and
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
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.
33812
SMALL ENGINE CONTROL IC
Features:
• Designed to operate over the range of ~4.7 V VPWR 36 V
• Fuel Injector driver - Current Limit - 4.0 A Typical
• Ignition pre-driver can drive IGBT or Darlington bipolar junction
EK Pb-FREE SUFFIX
98ASA10556D
32 Pin SOICW EP
transistors
• Ignition pre-driver has independent high and low side outputs
ORDERING INFORMATION
• Relay driver - Current Limit - 4.0 A Typical
• Lamp driver- Current Limit - 1.5 A Typical
• All external outputs protected against short to battery, over-current
• Ignition and other drivers protected against over-temperature
• Interfaces directly to MCU Using 5.0 V parallel interface
Device
MCZ33812EK/R2
*MCZ33812AEK/R2
Temperature
Range (TA)
-40° to 125°C
Package
32 SOICW-EP
• 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
VBAT
+5 V
MCU
VCC
GPIO
GPIO
RESET
GPIO
GPIO
GPIO
GPIO
GPIO
GPIO
RXD
TXD
PNP
VPWR
33812
LAMPOUT
MIL VBAT
VBAT
+5 V
VCCREF
VCCSENS
LAMPIN
RIN
RESET
WDRFSH
ROUT
INJECTOR
INJOUT
VBAT
IGNSUP
IGNFB
VPWR
RELAY OR
OTHER LOAD
VBAT
INJIN
INJFLT
IGNOUTH
IGNIN
IGNFLT
RELFLT
MRX
MTX
IGNOUTL
(IGBT DRIVER SHOWN)
TM_EN, TEST2
WD_INH
PGND1,2
DGND
ISO9141
ISO9141
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.


Freescale Semiconductor Electronic Components Datasheet

33812 Datasheet

Multifunctional Ignition and Injector Driver

No Preview Available !

33812 pdf
VBAT
+5 V
MCU
VCC
GPIO
GPIO
RESET
GPIO
GPIO
GPIO
GPIO
GPIO
GPIO
RXD
TXD
PNP
VPWR
33812
LAMPOUT
MIL VBAT
VBAT
+5 V
VCCREF
VCCSENS
LAMPIN
RIN
RESET
WDRFSH
ROUT
INJECTOR
INJOUT
VBAT
IGNSUP
+5 V
IGNFB
RELAY OR
OTHER LOAD
VBAT
INJIN
INJFLT
IGNIN
IGNFLT
RELFLT
MRX
MTX
IGNOUTH
IGNOUTL
(DARLINGTON
DRIVER SHOWN)
TM_EN, TEST2
WD_INH
PGND1,2
DGND
ISO9141
ISO9141
Figure 2. 33812 Simplified Application Diagram (Darlington Mode)
33812
2
Analog Integrated Circuit Device Data
Freescale Semiconductor


Part Number 33812
Description Multifunctional Ignition and Injector Driver
Maker Freescale Semiconductor
Total Page 25 Pages
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