")ꢀꢁꢂꢂꢃꢄ
ɑ Îɔƍɪ!ऍዋ Typical Application
OUT 1 OUT 2
OUT 4
OUT 3
ɑ %Ʊ!ऍˏĩዋ Recommended External Components Value
%ƱΟΫRecommendation
ǹ˿ΫUnit
Rs
0.68
ꢆ
Rt
13
kꢆ
Ct
4700
pF
R1+R2
ꢈ 10
kꢆ
ɑ %ƱƏ̎ɶˉዋ Recommended Operating Conditions
äꢀΨˏꢁϠðɯꢂTa=25@ዋTa=25@ unless otherwise specified
ິΡΫParameter
%ƱΟΫRecommendation
-25 ጚ 120
ǹ˿ΫUnit
"ɯૡʟª
Tj
@
Junction Temperature
[fRช˖ชV
V
CC
V
V
4.5 ጚ 5.5
8 ጚ 45
Logic Supply Voltage
ꢃbช˖ชV
Vmm
Load Supply Voltage
ɑ üŤชȡወdfwSʧǬĩꢀܣ
ˏዋ Setting of Output Current and Chopping Frequency
ɼ
ɼ
üŤชȡܣ
ˏôዋ Output Current Setting
Constant current waveform ፯Motor current፰
Vref
lchop ꢁ ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ፧ᎢᎈᎤ
×
10 Rs
dfwSʧǬĩܣ
ˏôዋ Chopping Frequency Setting
Ichop
1
fchop ꢁ ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ ᎢHzᎤ
T=1/fchop
× ×
0.75 Ct Rt
ዄU170-1ዅ
ꢀꢃ
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