The L9935 is a two-phase stepper motor driver circuit from ST that is suited to drive bipolar stepper motors. The device can be controlled by a serial interface (SPI). All protections required to design a well protected system (short-circuit, over temperature, cross conduction etc.) are integrated.
The L9935 is a two-phase stepper motor driver circuit designed to drive bipolar stepper motors. It features 2x 1.1 A full bridge outputs with integrated chopping current regulation to minimize power dissipation during flyback. The device can be controlled via a serial interface (SPI) and includes comprehensive protection features such as short-circuit, open load, over-temperature pre-alarm, and error-flagging.
| Output current (average) | +1.2 A |
|---|---|
| Peak output current | +2.5 A |
| Max operating supply voltage | 24 V |
| Supply voltage range (DC) | -0.3 to 35 V |
The maximum operating supply voltage is 24 V.
The typical standby consumption is 40 pA.