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MFG:JRC Package Cooled:PLCC68
Part Number: NJM3777
MFG: JRC
Package Cooled: PLCC68
Description: The NJM3777 is a switch-mode (chopper), constant-current driver with two channels: one for each windin...
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NJM3777
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Suppliers
DataSheet
General Description
NJM3777 General Description
The NJM3777 is a switch-mode (chopper), constant-current driver with two channels: one for each winding of a two-phase stepper motor. The NJM3777 is equipped with a Disable input to simplify half-stepping operation. The NJM3777 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, including recirculation diodes. Voltage supply requirements are + 5 V for logic and +10 to + 45 V for the motor. Maximum output current is 900mAper channel.
NJM3777 Maximum Ratings
|
Parameter |
Pin No. |
Symbol |
Min |
Max |
Unit |
| Voltage |
|
|
|
|
|
| Logic supply |
13 |
VCC |
0 |
7 |
V |
| Motor supply |
5, 20 |
VMM |
0 |
45 |
V |
| Logic inputs |
10, 11, 14, 15 |
VI |
-0.3 |
6 |
V |
| Analog inputs |
8, 9, 16, 17 |
VA |
-0.3 |
VCC |
V |
| Current |
|
|
|
|
|
| Motor output current |
2, 4, 21, 23 |
IM |
-900 |
+900 |
mA |
| Logic inputs |
10, 11, 14, 15 |
II |
-10 |
- |
mA |
| Analog inputs |
8, 9, 16, 17 |
IA |
-10 |
- |
mA |
| Temperature |
|
|
|
|
|
| Operating junction temperature |
|
TJ |
-40 |
+150 |
°C |
| Storage temperature |
|
TS |
-55 |
+150 |
°C |
| Power Dissipation (Package Data) |
|
|
|
|
|
| Power dissipation at TGND = +25°C |
|
PD |
- |
5 |
W |
| Power dissipation at TGND = +125°C |
|
PD |
- |
2 |
W |
NJM3777 Features
• Dual chopper driver
• 900 mA continuous output current per channel
• Digital filter on chip eliminates external filtering components
• Package EMP24(Batwing)
• 900 mA continuous output current per channel
• Digital filter on chip eliminates external filtering components
• Package EMP24(Batwing)
NJM3777 Connection Diagram
NJM3777
PDF/DataSheet Download
- Datasheet: NJM3777
- File Size: 170556 KB
- Manufacturer: NJRC [New Japan Radio]
- Click here to Download
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