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NXP Semiconductors Electronic Components Datasheet

MC33812 Datasheet

Multifunctional Ignition and Injector Driver

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NXP Semiconductors
Data sheet: Technical Data
Multifunctional Ignition and Injector
Driver
Document Number: MC33812
Rev. 6.0, 4/2016
33812
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. This device is powered by SMARTMOS
technology.
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 transistors
• Ignition pre-driver has independent high and low-side outputs
• Relay driver - current limit - 4.0 A typical
• Lamp driver- current limit - 1.5 A typical
• All external outputs protected against short to battery, overcurrent
• Ignition and other drivers protected against overtemperature
• Interfaces directly to MCU using 5.0 V parallel interface
• VCC voltage pre-regulator provides +5.0 V power for the MCU
• 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
SMALL ENGINE CONTROL IC
EK Pb-FREE SUFFIX
98ASA10556D
32 Pin SOICW EP
Applications:
• Single cylinder engine control
• Dual cylinder engine control
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. Simplified application diagram
© 2016 NXP B.V.


NXP Semiconductors Electronic Components Datasheet

MC33812 Datasheet

Multifunctional Ignition and Injector Driver

No Preview Available !

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. Simplified application diagram (Darlington mode)
33812
2
NXP Semiconductors


Part Number MC33812
Description Multifunctional Ignition and Injector Driver
Maker NXP
PDF Download

MC33812 Datasheet PDF






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