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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, over temperature, cross conduction etc.) are integrated.

Features

■ 2 x 1.1 A 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 over load, open load and over temperature pre alarm

■ Delayed channel switch on to reduce peak currents

■ Max. operating supply voltage 24 V

■ Standby consumption typically 40 μA

■ Serial interface (SPI)