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Part Number: NJM3774
Description: The NJM3774 is a switch-mode (chopper), constantcurrent driver with two channels: one for each winding...
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NJM3774
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DataSheet
General Description
NJM3774 General Description
The NJM3774 is a switch-mode (chopper), constantcurrent driver with two channels: one for each winding of a two-phase stepper motor. The NJM3774 is equipped with a TTL level compatible Disable input to simplify half-stepping operation. The circuit is well suited for microstepping applications together with the matching dual DAC NJU39610. In full/half stepping applications, the NJM3517 can be used as a phase generator (translator) to derive the necessary signals for the NJM3774. The NJM3774 contains a clock oscillator, which is common for both driver channels, a set of comparators and flip-flops implementing the switching control, and two output H-bridges. Voltage supply requirements are +5 V for logic and +10 to +45 V for the motor. Maximum output current is 1000mA per channel.
NJM3774 Maximum Ratings
|
Parameter |
Pin No. |
Symbol |
Min |
Max |
Unit |
| Voltage |
|
|
|
|
|
| Logic supply |
22 |
VCC |
0 |
7 |
V |
| Motor supply |
9, 14 |
VMM |
0 |
45 |
V |
| Logic inputs |
4, 7, 16, 19 |
VI |
-0.3 |
6 |
V |
| Comparator inputs |
2, 21 |
VC |
-0.3 |
VCC |
V |
|
Reference inputs |
3, 20 |
VA |
-0.3 |
7.5 |
V |
| Current |
|
|
|
|
|
| Motor output current |
8, 11, 12, 15 |
IM |
-1200 |
+1200 |
mA |
| Logic inputs |
4, 7, 16, 19 |
II |
-10 |
- |
mA |
| Analog inputs |
2, 3, 20, 21 |
IA |
-10 |
- |
mA |
| Temperature |
|
|
|
|
|
| Operating junction temperature |
|
TJ |
-40 |
+150 |
°C |
| Storage temperature |
|
TSTG |
-55 |
+150 |
°C |
| Power Dissipation (Package Data) |
|
|
|
|
|
|
Power Dissipation at TGND = +25°C, DIP and PLCC package |
|
PD |
- |
5 |
W |
| Power dissipation at TGND = +25°C, DIP package |
|
PD |
- |
2.2 |
W |
| Power dissipation at TGND = +125°C, PLCC package |
|
PD |
- |
2.6 |
W |
NJM3774 Features
• Dual chopper driver
• 1000 mA continuous output current per channel
• Specially matched to the Dual DAC NJU39610
• Packages DIP22 / PLCC28
• 1000 mA continuous output current per channel
• Specially matched to the Dual DAC NJU39610
• Packages DIP22 / PLCC28
NJM3774 Connection Diagram
NJM3774
PDF/DataSheet Download
- Datasheet: NJM3774
- File Size: 165706 KB
- Manufacturer: NJRC [New Japan Radio]
- Click here to Download
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- NJRC [New Japan Radio]
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- ·NJM022BD
- NJRC [New Japan Radio]
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- ·NJM022BL
- NJRC [New Japan Radio]
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- ·NJM022BM
- NJRC [New Japan Radio]
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NJM3774 Relative Products
NJM3773
The NJM3773 is a switch-mode (chopper), constant-current driver with two channels: one for each winding of a two-phase stepper motor. The NJM3773 is also equipped with a Disable input to simplify half-stepping operation. The circuit is well suited for micros...
NJM3772D2
The NJM3772 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 NJM3772 contains a clock oscillator, which is common f...
NJM37717
NJM37717 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.NJM37717 is a high voltage version and pin compati...
NJM3771
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 b...
NJM3770AFM2
NJM3770A is a stepper motor driver, which consists of aLS-TTL compatible logic input stage, a current sensor, amonostable multivibrator and a high power H-bridge output stage. The NJM3770A is a high power version and pin-compatible with the NJM3717. Two NJM...
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NJM3770A is a stepper motor driver, which consists of aLS-TTL compatible logic input stage, a current sensor, amonostable multivibrator and a high power H-bridge output stage. The NJM3770A is a high power version and pin-compatible with the NJM3717. Two NJM...
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