DESCRIPTION
The L9935 is a two-phase stepper motor driver circuit 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, overtemperature, cross conduction etc.) are integrated.

■ 2 X 1.1A FULL BRIDGE OUTPUTS
■ INTEGRATED CHOPPING CURRENT REGULATION
■ MINIMIZED POWER DISSIPATION DURING FLYBACK
■ OUTPUT STAGES WITH CONTROLLED OUTPUT VOLTAGE SLOPES TO REDUCE ELECTROMAGNETIC RADIATION
■ SHORT-CIRCUIT PROTECTION OF ALL OUTPUTS
■ ERROR-FLAG FOR OVERLOAD, OPEN LOAD AND OVERTEMPERATURE PREALARM
■ DELAYED CHANNEL SWITCH-ON TO REDUCE PEAK CURRENTS
■ MAX. OPERATING SUPPLY VOLTAGE 24V
■ STANDBY CONSUMPTION TYPICALLY40µA
■ SERIAL INTERFACE (SPI)