Dual Gauge Driver Integrated Circuit with Improved Damping Algorithms
The MC33970 is a single‑packaged, SPI‑controlled dual step‑motor gauge driver IC that integrates four dual‑output H‑bridge drivers and control logic. It is designed for automotive instrumentation systems and provides pointer movement emulation with minimal processor overhead.
The document includes ordering information, pin definitions, maximum and static electrical ratings, dynamic timing parameters, and revision history, along with contact details for Freescale support.
| Input Pin Voltage Range | -0.3 V – 7.0 V |
|---|---|
| Maximum Continuous Output Current | 40 mA |
| Maximum Pointer Acceleration | 4500°/s² |
| Operating Temperature Range | -40 °C to 125 °C |
| Sleep Mode Current (IDD OFF) | 40 pA (typ) |
The device operates from –40 °C to 125 °C.
Each H‑bridge driver can continuously source up to 40 mA.