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)

L9935屬于集成電路（IC） > 電機(jī)驅(qū)動(dòng)器，控制器。意法半導(dǎo)體（ST）集團(tuán)制造生產(chǎn)的L9935電機(jī)驅(qū)動(dòng)器，控制器產(chǎn)品屬于電機(jī)驅(qū)動(dòng)器和控制器電源管理集成電路 (PMIC) 系列，可用于控制或操作從某電源施加到電機(jī)或相關(guān)機(jī)電執(zhí)行器的電源。所實(shí)現(xiàn)的具體功能和特性集根據(jù)預(yù)期負(fù)載和預(yù)期應(yīng)用的特性有很大差異，范圍從用于有刷電機(jī)的簡(jiǎn)單開環(huán)速度控制到基于步進(jìn)電機(jī)的高級(jí)閉環(huán)運(yùn)動(dòng)控制。