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MC3479 View Datasheet(PDF) - ON Semiconductor

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Description
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MC3479
ON-Semiconductor
ON Semiconductor ON-Semiconductor
MC3479 Datasheet PDF : 12 Pages
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ON Semiconductort
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
350 mA/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 Compatible Inputs
Input Hysteresis: 400 mV Minimum
Phase Logic Can Be Initialized to Phase A
Phase A Output Drive State Indication (Open–Collector)
MC3479
STEPPER MOTOR
DRIVER
SEMICONDUCTOR
TECHNICAL DATA
P SUFFIX
PLASTIC PACKAGE
CASE 648C
VM
Clk
Clock
CW/CCW
CW/CCW
Logic
Full/Half
Step
F/H Step
OIC
OIC
Driver
Driver
Phase A
Bias/Set
Gnd
Figure 1. Representative Block Diagram
PIN CONNECTIONS
VD 1
L2 2
L1 3
4
Gnd
5
Bias/Set 6
L1
Clk 7
OIC 8
16 VM
15 L3
14 L4
13
Gnd
12
11 Phase A
10 CW/CCW
9 Full/Half
Step
L2
(Top View)
VD
L3
INPUT TRUTH TABLE
L4
CW/CCW
Input Low Input High
CW
CCW
Full/Half Step
OIC
Full Step
Hi Z
Half Step
Low Z
Clk
Positive Edge Triggered
Device
MC3479P
ORDERING INFORMATION
Operating
Temperature Range
TA = 0° to +70°C
Package
Plastic
© Semiconductor Components Industries, LLC, 2001
1
August, 2001 – Rev. 3
Publication Order Number:
MC3479/D
 

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