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3957 데이터시트(PDF) 3 Page - Allegro MicroSystems

부품명 3957
상세설명  FULL-BRIDGE PWM MICROSTEPPING MOTOR DRIVER
PDF  16 Pages
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제조업체  ALLEGRO [Allegro MicroSystems]
홈페이지  http://www.allegromicro.com
Logo ALLEGRO - Allegro MicroSystems

3957 데이터시트(HTML) 3 Page - Allegro MicroSystems

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3957
FULL-BRIDGE PWM
MICROSTEPPING
MOTOR DRIVER
Table 2 — PFD Truth Table
VPFD
Description
≥3.5 V
Slow Current-Decay Mode
1.2 V to 2.9 V
Mixed Current-Decay Mode
≤0.8 V
Fast Current-Decay Mode
Table 1 — PHASE Truth Table
PHASE
OUTA
OUTB
HH
L
LL
H
Table 3 — DAC Truth Table
DAC Data
Current
D3
D2
D1
D0
Ratio, %
VREF/VS
HHHH
100
3.00
H
H
H
L
95.7
3.13
H
H
L
H
91.3
3.29
H
H
L
L
87.0
3.45
H
L
H
H
82.6
3.64
H
L
H
L
78.3
3.83
H
L
L
H
73.9
4.07
H
L
L
L
69.6
4.31
L
H
H
H
60.9
4.93
L
H
H
L
52.2
5.74
L
H
L
H
43.5
6.90
L
H
L
L
34.8
8.62
L
L
H
H
26.1
11.49
L
L
H
L
17.4
17.24
L
L
L
X
All Outputs Disabled
where VS = ITRIP • RS. See Applications section.



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