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Overview
With increasing gas prices and
worldwide emissions regulations, small
engine applications face increasing
pressure to be green.
In the automotive industry, Freescale
has been on the forefront of the change
from mechanical to electronic engine
control. We are now leading the way to
make this change in the small engine
industry as well.
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, 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
another injector or fuel pump. The pre-
driver is intended to drive either an
Insulated Gate Bipolar Transistor (IGBT)
or a bipolar Darlington transistor to
control an ignition coil.
MC33812 Simplified Application Drawing
Applications
• Small Engine Control
• Lawn Mowers
• Scooters
• Small Motorcycles
• Lawn Trimmers
• Snow Blowers
• Chain Saws
• Gas-driven Electrical Generators
• Outboard Motors
Analog, Mixed Signal and Power Management
MC33812
Multifunctional Ignition and Injector Driver
