NJM3717FM2 NJR, NJM3717FM2 Datasheet

IC STEPPER MOTOR DRIVER 28-PLCC

NJM3717FM2

Manufacturer Part Number
NJM3717FM2
Description
IC STEPPER MOTOR DRIVER 28-PLCC
Manufacturer
NJR
Type
Stepper Motor Controller/Driverr
Datasheet

Specifications of NJM3717FM2

Applications
Stepper Motor Driver
Number Of Outputs
1
Current - Output
1A
Voltage - Load
10 V ~ 45 V
Voltage - Supply
4.75 V ~ 5.25 V
Operating Temperature
-20°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
28-PLCC
Product
Stepper Motor Controllers / Drivers
Operating Supply Voltage
7 V
Supply Current
25 mA
Mounting Style
SMD/SMT
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
NJM3717FM2
Manufacturer:
NJR
Quantity:
20
Part Number:
NJM3717FM2
Manufacturer:
JRC
Quantity:
1 831
Part Number:
NJM3717FM2
Manufacturer:
NJR
Quantity:
10 000
Part Number:
NJM3717FM2
Manufacturer:
XILINX
0
Figure 1. Block diagram
compatible logic input stage, a current sensor, a monostable
multivibrator and a high power H-bridge output stage with built-in
number of external components form a complete control and drive
unit for stepper motor systems.
• Half-step and full-step modes
• Switched mode bipolar constant current drive
• Wide range of current control
• Wide voltage range 10 - 50 V
• Thermal overload protection
• Packages
protection diodes.
NJM3717 is a stepper motor diver, which consists of a LS-TTL
The output current is up to 1200mA. Two NJM3717 and a small
GENERAL DESCRIPTION
FEATURES
BLOCK DIAGRAM
DIP16 / PLCC28 / EMP20
Phase
GND
V
I 1
I 0
R
V
CC
5 - 1200 mA
Current Sensor
+
+
+
&
STEPPER MOTOR DRIVER
&
Schmitt
Trigger
&
&
Time
Delay
1
T
Monostable
t
off
= 0.69 • R • C
1
1
T
T
V
E
MM
Output Stage
PACKAGE OUTLINE
V
NJM3717D2
MM
NJM3717
1
1
NJM3717FM2
NJM3717
M A
M B
NJM3717E2

Related parts for NJM3717FM2

NJM3717FM2 Summary of contents

Page 1

... DIP16 / PLCC28 / EMP20 BLOCK DIAGRAM Phase GND Figure 1. Block diagram STEPPER MOTOR DRIVER 5 - 1200 Schmitt Time Trigger Delay & & & & + – + – Monostable + t = 0.69 • R • C off T – Current Sensor T NJM3717 PACKAGE OUTLINE NJM3717D2 NJM3717E2 NJM3717FM2 Output Stage T NJM3717 E ...

Page 2

... Reference voltage. Controls the threshold voltage of the comparator and R hence the output current. Input resistance: typically 6.8k M Motor output A, Motor current flows from Common emitter. Connect the sense resistor between this pin and ground. NJM3717 N N/C 7 NJM3717FM2 E 8 GND when Phase is high pins should be wired together on MM ...

Page 3

V Figure 3. Definition of terms FUNCTIONAL DESCRIPTION The NJM3717 is intended to drive a bipolar constant current through one motor winding of a 2-phase stepper motor. Current control is achieved through switched-mode regulation, see figure 4 and ...

Page 4

Current sensor The current sensor contains a reference voltage divider and three comparators for measuring each of the select- able current levels. The motor current is sensed as a voltage drop across the current sensing resistor, R compared with one ...

Page 5

Figure 4. Motor current ( Vertical : 200 mA/div, Horizontal: 1 ms/div, expanded part 100 s/div Phase shift here gives fast current decay ...

Page 6

ABSOLUTE MAXIMUM RATINGS Parameter Voltage Logic supply Motor supply Logic inputs Comparator input Reference input Current Motor output current Logic inputs Analog inputs Temperature Operating junction temperature Storage temperature RECOMMENDED OPERATING CONDITIONS Parameter Logic supply voltage Motor supply voltage Motor ...

Page 7

ELECTRICAL CHARACTERISTICS Electrical characteristics over recommended operating conditions, unless otherwise noted - 820 pF kohm Parameter General Supply current Total power dissipation Turn-off delay Thermal shutdown junction temperature Logic Inputs Logic ...

Page 8

Applications Information Motor selection Some stepper motors are not designed for continuous operation at maximum current. As the circuit drives a con- stant current through the motor, its temperature can increase, both at low- and high-speed operation. Some stepper motors ...

Page 9

Analog control As the current levels can be continuously controlled by modulating the V achieved. Switching frequency The motor inductance, together with the pulse time, t The choice of motor may then require other values on the R to obtain ...

Page 10

TYPICAL CHARACTERISTICS V (V) Sat 1.8 1.6 1 125 C j 1.2 1 .20 .40 .60 .80 I (A) M Figure 11. Typical source saturation vs. output ...

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