3967 Datasheet (Allegro MicroSystems) - MICROSTEPPING DRIVER WITH TRANSLATOR

3967, MICROSTEPPING DRIVER WITH TRANSLATOR

Device Operation.

The A3967 is a complete microstepping motor driver with built in translator for easy operation with minimal control lines.

It is designed to operate bipolar stepper motors in full-, half-, quarterand eighth-step modes.

The current in each of the two output H-bridges is regulated w

Data Sheet 26184.24F 3967 MICROSTEPPING DRIVER WITH TRANSLATOR REF 1 RC2 2 ÷8 PWM TIMER 24 PFD 23 RC1 SLEEP 3 22 RESET OUT2B 4 LOAD SUPPLY2 5 VBB2 GND 6 21 OUT1B LOAD VBB1 20 SUPPLY1 19 GND GND 7 18 GND SENSE2 8 17 SENSE1 OUT2A 9 16 OUT1A STEP 10 DIR 11 MS1 12 TRANSLATOR 15 ENABLE & CONTROL LOGIC VCC 14 LOGIC SUPPLY 13 MS2 Dwg.

PP-075-2 ABSOLUTE MAXIMUM RATINGS at TA = +25°C Load Supply Voltage, VBB 30 V Output Current, IOUT Continuous ±750 mA Peak ±850 mA Lo

3967 Features

* ±750 mA, 30 V Output Rating

* Satlington® Sink Drivers

* Automatic Current-Decay Mode Detection/Selection

* 3.0 V to 5.5 V Logic Supply Voltage Range

* Mixed, Fast, and Slow Current-Decay Modes

* Internal UVLO and Thermal Shutdown Circuitry

* Crossover-Current Protectio