L9942_V01中文资料意法半导体数据手册PDF规格书

特性 Features

■ Two full bridges for max. 1.3 A load

(RDSON = 500 m)

■ Programmable current waveform with look-up

table: 9 entries with 5 bit resolution

■ Current regulation by integrated PWM

controller and internal current sensing

■ Programmable stepping mode: full, half, mini

and microstepping

■ Programmable slew rate for EMC and power

dissipation optimization

■ Programmable Fast-, Slow-, Mixed- and Auto-

Decay Mode

■ Full-scale current programmable with 3 bit

resolution

■ Programmable stall detection

■ Step clock input for reduced μController

requirements

■ Very low current consumption in standby mode

IS < 3 μA, typ. Tj  85 °C

■ All outputs short circuit protected with

openload, overload current, temperature

warning and thermal shutdown

■ The PWM signal of the internal PWM controller

is available as digital output.

■ All parameters are guaranteed for 3 V < Vcc <

5.3 V and for 7 V