Freescale Semiconductor Advance Information
Document Number: MC33811 Rev.
3, 8/2008
Solenoid Monitor Integrated Circuit (IC)
The 33811 is a 5 channel Solenoid Monitor IC that is used to verify proper electrical and mechanical solenoid operation.
The IC contains five solenoid driver
voltage monitoring stages and a serial peripheral interface (SPI) for fault communication and setup.
The IC has the ability to determine the correct movement of solenoid armatures by analyzing the variation in the
voltage profile, across the solenoid driver
MOSFET, which represents the actual solenoid current profile.
These features, along with cost effective packaging, make the 33811 ideal for powertrain soleno...