TI DRV8805DWR

The DRV8805 provides an integrated solution for driving unipolar stepper motors. It includes four lowside drivers with overcurrent protection and provides built-in diodes to clamp turnoff transients generated by the motor windings. Indexer logic to control a unipolar stepper motor using a simple step/direction interface is also integrated. Three stepping modes are supported: 2 phase (full-step), 1-2 phase (half-step), and 1-phase (wave drive). In the SOIC (DW) package, the DRV8805 can supply up to 1.5-A (one channel on) or 800-mA (all channels on) continuous output current per channel, at 25°C. In the HTSSOP (PWP) package, it can supply up to 2-A (one channel on) or 1-A (four channels on) continuous output current per channel, at 25°C with proper PCB heatsinking. Internal shutdown functions are provided for overcurrent protection, short-circuit protection, under voltage lockout, and overtemperature, and faults are indicated by a fault output pin. The DRV8805 is available in a 20-pin thermallyenhanced SOIC package and a 16-pin HTSSOP package (Eco-friendly: RoHS & no Sb/Br).

• 4-Channel Protected Low-Side Driver Four NMOS FETs With Overcurrent Protection Integrated Inductive Clamp Diodes
• Indexer/Translator for Unipolar Stepper Motors
• Simple Step/Direction Interface Three Step Modes (2-Phase Full-Step, 1-2- Phase Half-Step, 1-Phase Wave Drive)
• DW Package: 1.5-A (Single Channel On) / 800-mA (Four Channels On) Maximum Drive Current per Channel (at 25°C)
• PWP Package: 2-A (Single Channel On) / 1-A (Four Channels On) Maximum Drive Current per Channel (at 25°C, With Proper PCB Heatsinking)
• 8.2-V to 60-V Operating Supply Voltage Range
• Thermally Enhanced Surface Mount Package

• Gaming Machines
• General Unipolar Stepper Motor Drivers