NJM3771FM2-TE3 NJR, NJM3771FM2-TE3 Datasheet

Motor / Motion / Ignition Controllers & Drivers Dual Stepper Motor Driver

NJM3771FM2-TE3

Manufacturer Part Number
NJM3771FM2-TE3
Description
Motor / Motion / Ignition Controllers & Drivers Dual Stepper Motor Driver
Manufacturer
NJR
Type
Stepper Motor Controller/Driverr
Datasheet

Specifications of NJM3771FM2-TE3

Product
Stepper Motor Controllers / Drivers
Operating Supply Voltage
10 V to 45 V
Supply Current
38 mA to 50 mA
Mounting Style
SMD/SMT
Package / Case
PLCC-28
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
especially developed for use in microstepping applications in
conjunction with the matching dual DAC (Digital-to-Analog
Converter) NJU39610.
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.
• Dual chopper driver
• 650 mA output current per channel
• Selectable slow/fast current decay for improved high-
• Specially matched to Dual DAC NJU39610
• Packages DIP22 / EMP24(Batwing) / PLCC28
Figure 1. Block diagram
The NJM3771 is a stepper motor driver, which circuit is
The NJM3771 contains a clock oscillator, which is common
speed microstepping
GENERAL DESCRIPTION
FEATURES
BLOCK DIAGRAM
V
RC
CC
NJM 3771
DUAL STEPPER MOTOR DRIVER
+
V
CC
Phase
Phase
2
1
CD
CD
2
1
V
V
R1
R2
C
C
1
2
+
+
+
+
GND
S
R
R
S
Q
Q
PACKAGE OUTLINE
Logic
Logic
NJM3771D2
E
E
2
1
NJM3771FM2
NJM3771E3
V
M
M
V
M
M
MM1
MM2
A1
B1
B2
A2
NJM3771

Related parts for NJM3771FM2-TE3

NJM3771FM2-TE3 Summary of contents

Page 1

... Specially matched to Dual DAC NJU39610 • Packages DIP22 / EMP24(Batwing) / PLCC28 BLOCK DIAGRAM NJM 3771 Figure 1. Block diagram DUAL STEPPER MOTOR DRIVER Phase – – + – – – Phase GND NJM3771 PACKAGE OUTLINE NJM3771E3 NJM3771D2 NJM3771FM2 Logic MM1 V MM2 M B2 Logic ...

Page 2

...

Page 3

FUNCTIONAL DESCRIPTION Each channel of the NJM3771 consists of the following sections: an H-bridge output stage, capable of driving up to 650 mA continuous motor current (or 500 mA, both channels driven), a logic section that controls the output transistors, ...

Page 4

ABSOLUTE MAXIMUM RATINGS Parameter Voltage Logic supply Motor supply Logic inputs Comparator inputs Reference inputs Current Motor output current Logic inputs Analog inputs Oscillator charging current Temperature Operating junction temperature Storage temperature** ** Circuit only. The packaging can handle max ...

Page 5

ELECTRICAL CHARACTERISTICS Electrical characteristics over recommended operating conditions, unless otherwise noted. -20 C < T Parameter General Supply current Total power dissipation Turn-off delay Logic Inputs Logic HIGH input voltage Logic LOW input voltage Logic HIGH input current Logic LOW ...

Page 6

APPLICATIONS INFORMATION Current control The output current to the motor winding is mainly determined by the voltage at the reference input and the value of the sensing resistor Chopping frequency, winding inductance, and supply voltage will affect ...

Page 7

External components The voltage across the sensing resistor is fed back to the comparator via a low-pass filter section, to prevent erroneous switching due to switching transients. The recommended filter component values, 1 kohm and 820 pF, are suitable for ...

Page 8

General Phase inputs A logic HIGH on a Phase input gives positive current flowing out from M the opposite direction. Slow/fast current decay A logic HIGH on the CD input gives slow current decay, a logic LOW gives fast current ...

Page 9

TYPICAL CHARACTERISTICS 125 .10 .20 .30 .40 .50 .60 I (A) M Figure 10. Typical upper diode voltage drop vs. recirculating ...

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