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NJM3774FM2, NJM3774FN2, NJM3775

Table of contents:
Info of NJM3774FM2
Info of NJM3774FN2
Info of NJM3775

NJM3774FM2, NJM3774FN2, NJM3775 Selling Leads, Datasheet

MFG:JRC Package Cooled:PLCC28 D/C:09+

NJM3774FM2, NJM3774FN2, NJM3775 Datasheet download

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Part Number: NJM3774FM2

MFG: JRC

Package Cooled: PLCC28

D/C: 09+

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NJM3774FM2 General Description

The NJM3774 is a switch-mode (chopper), constant current 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.

NJM3774FM2 Maximum Ratings

Parameter	Pin no.[DIP package]	Symbol	Min	Max	Unit
Voltage
Logic supply	22	V_CC	0	7	V
Motor supply	9, 14	V_MM	0	45	V
Logic inputs	4, 7, 16, 19	V_I	-0.3	6	V
Comparator inputs	2, 21	V_C	-0.3	VCC	V
Reference inputs	3, 20	V_R	-0.3	7.5	V
Current
Motor output current	8, 11, 12, 15	I_M	-1200	+1200	mA
Logic inputs	4, 7, 16, 19	I_I	-10	-	mA
Analog inputs	2, 3, 20, 21	I_A	-10	-	mA
Temperature
Operating Junction temperature		T_j	-40	+150	°C
Storage temperature		T_stg	-55	+150	°C
Power Dissipation (Package Data)
Power dissipation at T_GND = +25°C, DIP and PLCC package		P_D	-	5	W
Power dissipation at T_GND = +125°C, DIP package		P_D	-	2.2	W
Power dissipation at T_GND = +125°C, PLCC package		P_D	-	2.6	W

NJM3774FM2 Features

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

NJM3774FM2 Connection Diagram

NJM3775 General Description

The NJM3775 is a switch-mode (chopper), constantcurrent driver with two channels: one for each winding of a two-phase stepper motor. NJM3775 is equipped with a Disable input to simplify half-stepping operation. The NJM3775 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 750mA per channel.

NJM3775 Maximum Ratings

Parameter	Pin No.	Symbol	Min	Max	Unit
Voltage
Logic supply	12	V_CC	0	7	V
Motor supply	4, 19	V_MM	0	45	V
Logic inputs	9, 10, 13, 14	V_I	-0.3	6	V
Analog inputs	7, 8, 15, 16	V_A	-0.3	V_CC	V
Current
Motor output current	1, 3, 20, 22	I_M	-850	+850	mA
Logic inputs	9, 10, 13, 14	I_I	-10	-	mA
Analog inputs	7, 8, 15, 16	I_A	-10	-	mA
Temperature
Operating junction temperature		T_J	-40	+150	°C
Storage temperature		T_STG	-55	+150	°C
Power Dissipation (Package Data)
Power Dissipation at T_GND = +25°C, DIP and PLCC package		P_D	-	5	W
Power dissipation at T_GND = +25°C, DIP package		P_D	-	2.2	W
Power dissipation at T_GND = +125°C, PLCC package		P_D	-	2.6	W

NJM3775 Features

• Dual chopper driver
• 750 mA continuous output current per channel
• Digital filter on chip eliminates external filtering components
• Packages DIP22 / PLCC28 / EMP24(batwing)

NJM3775 Connection Diagram

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