NJM3771FM2# NJR, NJM3771FM2# Datasheet - Page 8
NJM3771FM2#
Manufacturer Part Number
NJM3771FM2#
Description
IC STEPPER MOTOR DUAL DVR 28PLCC
Manufacturer
NJR
Datasheet
1.NJM3771FM2.pdf
(9 pages)
Specifications of NJM3771FM2#
Applications
Stepper Motor Driver, 2 Phase
Number Of Outputs
1
Current - Output
650mA
Voltage - Load
10 V ~ 40 V
Voltage - Supply
4.75 V ~ 5.25 V
Operating Temperature
-20°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
28-PLCC
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
NJM#3771FM2
NJM#3771FM2
NJM#3771FM2
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
General
Phase inputs
A logic HIGH on a Phase input gives positive current flowing out from M
the opposite direction.
Slow/fast current decay
Heat sinking
Soldering the four center pins onto a free PCB copper area of 20 cm
35 m) permits the circuit to operate with a maximum of 320 mA output current, both channels driving, at ambient
temperatures up to +70 C. Consult figures 9 and 14 in order to determine the necessary copper area for heat
sinking if higher currents are required.
Thermal shutdown
The circuit is equipped with a thermal shutdown function that reduces the output current at chip temperatures
above +160 C.
Figure 9. Thermal Resistance vs. PC Board copper area and suggested layout
A logic HIGH on the CD input gives slow current decay, a logic LOW gives fast current decay.
80
70
60
50
40
30
20
Thermal resistance [ C/W]
PLCC package
DIP package
5
PCB copper foil area [cm ]
10
15
20
25
2
30
35
24-pin EMP
2
(approx. 1.8" x 1.8", copper foil thickness =
A
into M
B
. A logic LOW gives a current in
22-pin
28-pin
PLCC
DIP
NJM3771