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STK672-210-E датащи(PDF) 8 Page - ON Semiconductor

номер детали STK672-210-E
подробное описание детали  Two-Phase Stepping Motor Driver Output Current 1.4A
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производитель  ONSEMI [ON Semiconductor]
домашняя страница  http://www.onsemi.com
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STK672-210-E
No. 7464-8/10
STK672-210-E Allowable Avalanche Energy Value
[Allowable Range in Avalanche Mode]
When driving a 2-phase stepping motor with constant current chopping using an STK672-2** Series hybrid IC,
the waveforms shown in Figure 1 below result for the output current, ID, and voltage, VDS.
Figure 1 Output Current, ID, and Voltage, VDS, Waveforms 1 of the STK672-2** Series when
Driving a 2-Phase Stepping Motor with Constant Current Chopping
VDSS: Voltage during avalanche operations
IOH: Motor current peak value
IAVL: Current during avalanche operations
tAVL: Time of avalanche operations
VDS
ID
ITF02557
ITF02295
0
20
40
60
80
100
120
Substrate temperature, Tc - °C
IOH - Tc
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
0
ITF02298
020
10
40
60
80
100
30
50
70
90
110
Substrate temperature, Tc - °C
IOH - Tc
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
0
ITF02297
100
23
5
7
1000
23
5
7 10000
Input frequency, CLK - Hz
10
20
30
40
50
60
70
80
0
ITF02296
0
0.5
1.0
1.5
2.0
2.5
3.0
Hybrid IC internal power dissipation, Pd - W
ΔTc - Pd
ΔTc - CLK
10
20
30
40
50
60
70
80
90
0
IOH=1.3A 2ex
Motor voltage: 24V
Vertical, independent,
heat sink without fins
Natural convection
Motor: R=3.3
Ω, L=3mH
IOH=1A 2ex
IOH=1A 1-2ex
Conditions: Motor voltage=24V
Motor: R=0.4
Ω, L=1.2mH
Motor running
Motor hold state current


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