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NJM3774

Features: • Dual chopper driver• 1000 mA continuous output current per channel• Specially matched to the Dual DAC NJU39610• Packages DIP22 / PLCC28PinoutSpecifications Parameter Pin No. Symbol Min Max Unit Voltage Logic supply...

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NJM3774: Features: • Dual chopper driver• 1000 mA continuous output current per channel• Specially matched to the Dual DAC NJU39610• Packages DIP22 / PLCC28PinoutSpecifications ...

NJM3774 Data Sheet

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Part Number:
NJM3774
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

• Dual chopper driver
• 1000 mA continuous output current per channel
• Specially matched to the Dual DAC NJU39610
• Packages DIP22 / PLCC28


Pinout

Connection Diagram


Specifications

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



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.




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