The MC33991 is a single‑package, SPI‑controlled dual stepper motor gauge driver IC designed for automotive instrumentation systems. It integrates four dual‑output H‑bridge drivers and control logic to manage speed, direction, and current for two‑phase stepper motors with features such as 4096 pointer positions, analog microstepping, and low sleep‑mode current.
This datasheet includes a technical overview, internal block diagram, detailed pin connections, maximum ratings, static electrical characteristics, and ordering information. Revision history and contact details for Freescale support are also provided.
| Storage Temperature Range | -55 to 150 °C |
|---|---|
| Operating Junction Temperature Range | -40 to 150 °C |
The IC can be stored from –55 °C to 150 °C and operated from –40 °C to 150 °C.