MC3479
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MC3479 Stepper Motor Driver
The MC3479 is designed to drive a two- phase stepper motor in the bipolar mode. The circuit consists of four input sections, a logic decoding/sequencing section, two driver- stages for the motor coils, and an output to indicate the Phase A drive state.
- Single Supply Operation: 7.2 to 16.5 V
STEPPER MOTOR DRIVER
SEMICONDUCTOR TECHNICAL DATA
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- 350 m A/Coil Drive Capability Clamp Diodes Provided for Back- EMF Suppression Selectable CW/CCW and Full/Half Step Operation Selectable High/Low Output Impedance (Half Step Mode) TTL/CMOS patible Inputs Input Hysteresis: 400 m V Minimum Phase Logic Can Be Initialized to Phase A Phase A Output Drive State Indication (Open- Collector) Available in Standard DIP and Surface Mount
P SUFFIX PLASTIC PACKAGE CASE 648C
Figure 1. Representative Block Diagram
PIN CONNECTIONS
VD 1 2 3 4 5 Bias/Set 6 7 8 16 15 14 13 12 11 10 9 VM L3 L4 Gnd Phase A CW/CCW Full/Half Step
L1 Clk...
