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NJM3717D2 Datasheet Preview

NJM3717D2 Datasheet

STEPPER MOTOR DRIVER

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NJM3717
STEPPER MOTOR DRIVER
GENERAL DESCRIPTION
The NJM3717 is a stepper motor diver, which consists of
a LS-TTL compatible logic input stage, a current sensor, a
monostable multivibrator and a high power H-bridge output
stage with built-in protection diodes.
The output current is up to 1200mA. Two NJM3717 and
a small number of external components form a complete
control and drive unit for stepper motor systems.
PACKAGE OUTLINE
FEATURES
Half-step and full-step modes
Switched mode bipolar constant current drive
Wide range of current control
5 to 1200mA
Wide voltage range
10 to 50V
Thermal overload protection
Packages
DIP16-D2 / PLCC28-M2
SOP20 JEDEC 300mil
NJM3717D2
( DIP16 )
NJM3717E2
( SOP20 )
NJM3717FM2
( PLCC28-M2 )
BLOCK DIAGRAM
Figure 1. Block diagram
Ver.2011-12-08
-1-




New Japan Radio

NJM3717D2 Datasheet Preview

NJM3717D2 Datasheet

STEPPER MOTOR DRIVER

No Preview Available !

NJM3717
PIN CONFIGURATIONS
Figure 2. Pin configurations
PIN DESCRIPTION
DIP
SOP
1
1
2
2
PLCC
10
11
3,14
4,5,12,13
6
7
3,18
4,5,6,7,14,
15,16,17
8
9
12,4,
1,2,3,9,13,
14,15,16,
17,28
18
19
8
10
20
9
11
21
10
12
23
11
13
24
15
19
6
16
20
8
Symbol
MB
T
VMM
GND
VCC
I1
Phase
I0
C
VR
MA
E
Description
Motor output B, Motor current flows from MA to MB when Phase is high.
Clock oscillator. Timing pin connect a 56 kresistor and a 820 pF in parallel
between T and Ground.
Motor supply voltage, 10 to 45 V. VMM pins should be wired together on
PCB.
Ground and negative supply. Note these pins are used for heatsinking.
Make sure that all ground pins are soldered onto a suitable large copper
ground plane for efficient heat sinking.
Logic voltage supply normally +5 V.
Logic input, it controls, together with the I0 input, the current level in the
output stage. The controllable levels are fixed to 100, 60, 20, 0%.
Controls the direction of the motor current of MA and MB outputs. Motor
current flows from MA to MB when the phase input is high.
Logic input, it controls, together with the I1 input, the current level in the
output stage. The controlable levels are fixed to 100, 60, 20, 0%.
Comparator input. This input senses the instantaneous voltage across the
sensing resistor, filtered through a RC Network.
Reference voltage. Controls the threshold voltage of the comparator and
hence the output current. Input resistance: typically 6.8k±20%.
Motor output A, Motor current flows from MA to MB when Phase is high.
Common emitter. Connect the sense resistor between this pin and ground.
-2-
Ver.2011-12-08


Part Number NJM3717D2
Description STEPPER MOTOR DRIVER
Maker New Japan Radio
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