NJM3771
DUAL STEPPER MOTOR DRIVER
s
GENERAL DESCRIPTION
The NJM3771 is a stepper motor driver, which circuit is
especially developed for use in microstepping applications in
conjunction with the matching dual DAC (Digital-to-Analog
Converter) NJU39610.
The NJM3771 contains a clock oscillator, which is common
for both driver channels; a set of comparators and flip-flops
imple menting the switching control; and two H-bridges with
internal recirculation diodes. Voltage supply requirements are
+5 V for logic and +10 to +45 V for the motor. Maximum
output current is 650 mA per channel.
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PACKAGE OUTLINE
NJM3771D2
NJM3771E3
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FEATURES
鈥?Dual chopper driver
鈥?650 mA output current per channel
鈥?Selectable slow/fast current decay for improved high-
speed microstepping
鈥?Specially matched to Dual DAC NJU39610
鈥?Packages DIP22 / EMP24(Batwing) / PLCC28
NJM3771FM2
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BLOCK DIAGRAM
Phase
1
CD
1
V
R1
C
1
E
1
NJM 3771
V
CC
V
鈥?/div>
+
CC
R
S
Q
M
A1
+
鈥?/div>
Logic
M
B1
V
MM1
+
鈥?/div>
V
MM2
M
B2
Logic
S
R
Q
M
A2
鈥?/div>
+
RC
+
鈥?/div>
Phase
2
CD
2
V
R2
C
2
GND
E
2
Figure 1. Block diagram
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NJM3771FM2 產(chǎn)品屬性
NJM3771
40
集成電路 (IC)
PMIC - 電機(jī)和風(fēng)扇控制器,驅(qū)動(dòng)器
-
步進(jìn)電機(jī)驅(qū)動(dòng)器,2 相
-
1
650mA
10 V ~ 40 V
4.75 V ~ 5.25 V
-20°C ~ 125°C
表面貼裝
28-LCC(J 形引線)
28-PLCC
管件
NJM#3771FM2NJM#3771FM2-NDNJM3771FM2#NJM3771FM2#-ND
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