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| MC3479FN Datasheet, PDF (9/10 Pages) ON Semiconductor – Stepper Motor Driver | |||
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MC3479
+V
2.0 kW
Typ
Digital Inputs
Phase A
Clock
CW/CCW
Full/Half Step
OIC
+V
1N5221A (3.0 V)
VM
11
16
VD
L1
1
3
7
MC3479
10
L2
2
L3
15
9
L4
8
4 5 12 13 6 14
GND
Bias/Set
RB
Set
Normal
Operation
MC14049UB
or equivalent
Figure 12. Typical Applications Circuit
Motor
MC3479
6
Bias/Set
Normal
Operation
Reduced
Power
RB
RB1
MC14049UB
or equivalent
â Suggested value for RB1 (VM = 12 V) is 150 kW.
â RB calculation (see text) must take into account
the current through RB1.
Figure 13. Power Reduction
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