22.L9942 stepper motor driver

For bipolar stepper motors in automotive applications, designed for headlight leveling and bend lighting
L9942 stepper motor driver
For bipolar stepper motors in automotive applications,
designed for headlight leveling and bend lighting




December 2008




www.st.com/automotive
 L9942 stepper motor driver
STMicroelectronics’ L9942 is the successor of the highly established stepper motor driver, the L9935. Key
applications for the L9942 include automotive headlight leveling, bend lighting and adaptive front lighting, but also
HVAC flap driving and throttle positioning applications.

The device offers an extensive portfolio of features, driving bipolar stepper motors with high-efficiency and smooth
operation. Micro-stepping is the preferred mode to provide low-noise