STK672-220-E 查看數據表（PDF） - ON Semiconductor
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STK672-220-E Datasheet PDF : 10 Pages
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STK672-220-E
IOH - Tc
2.5
2.0
1.5
1.0
0.5
0
0
20
40
60
80
100
Substrate temperature, Tc - °C
ΔTc - CLK
80
70 IOH=1.8A 1-2ex
120
ITF02304
60 IOH=1.5A 2ex
50
40
30
ΔTc - Pd
90
80
70
60
50
40
30
20
10
0
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
Hybrid IC internal power dissipation, Pd - W ITF02305
IOH - Tc
3.5
Motor running
3.0
2.5
Motor hold state current
2.0
20 Motor voltage: 24V
Vertical, independent,
10
heat sink without fins
Natural convection
Motor: R=1.4Ω, L=1.6mH
0
100
23
5 7 1000
23
Input frequency, CLK - Hz
5 7 10000
ITF02306
1.5
1.0
0 10 20 30 40 50 60 70 80 90 100 110
Substrate temperature, Tc - °C
ITF02307
STK672-220-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.
VDSS: Voltage during avalanche operations
VDS
IOH: Motor current peak value
IAVL: Current during avalanche operations
ID
tAVL: Time of avalanche operations
ITF02557
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
No.7465-8/10
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