NTE1885
Integrated Circuit
Module, 4 Phase Stepping Motor Driver, 1.75A
Features:
D
Low heat generation due to constant current chopper system.
D
Functions of pause action and power down.
D
Able to be used in any stepping motor of hybrid typ, P.M. type, V.R. type.
D
Inverter buffer provides direct drive, for 4 phase dual excitation.
D
Built in sensing power resistors for load current.
D
Protection elements for fly鈥揵ack voltage are included.
Absolute Maximum Ratings:
(T
A
= +25擄C unless otherwise specified)
Supply Voltage, V
CC
(Quiescent) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50V
Phase Peak Current, I
OH
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.1A
Operating Case Temperature, T
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +105擄C
Junction Temperature, T
j
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +150擄C
Storage Temperature Range, T
stg
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 鈥?0擄 to +125擄C
Recommended Operating Conditions:
(T
A
= +25擄C Unless othrwise specified)
Supply Voltage Range, V
CC
1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22V to 45V
Phase Peak Current, I
OH
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5A
Operating Characteristics:
(T
A
= +25擄C, V
CC
1 = 36V, V
CC
2 = 5V Unless otherwise specified)
Parameter
Diode Forward Voltage
Symbol
V
df鈥?
V
df鈥?
Output Saturation Voltage
V
sat鈥?
V
sat鈥?
Output Current
OSC Frequency
Thermal Resistance
(Note 1)
I
O鈥?
f
胃
j鈥揷
TR1, TR6
TR2, TR3, TR4, TR5
Test Conditions
I
f
= 0.3A
I
f
= 0.5A
R
L
= 12鈩? V
in
= GND,
V
CC
1 = 22V
R
L
= 21鈩? V
in
= GND,
V
CC
1 = 36V
Min Typ Max
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
1.5
1.2
1.2
2.3
1.8
1.6
1.6
3.0
Unit
V
V
V
V
A
kHz
擄C/W
0.98 1.05 1.12
24 (Fixed OSC)
鈥?/div>
鈥?/div>
8.0
13.5
鈥?/div>
鈥?/div>
Note 1. From Junction of each transistor or diode to substrate
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