NJM#3517E2 NJR, NJM#3517E2 Datasheet - Page 12

Motor / Motion / Ignition Controllers & Drivers Stepper

NJM#3517E2

Manufacturer Part Number
NJM#3517E2
Description
Motor / Motion / Ignition Controllers & Drivers Stepper
Manufacturer
NJR
Type
Stepper Motor Controllerr
Datasheet

Specifications of NJM#3517E2

Product
Stepper Motor Controllers / Drivers
Operating Supply Voltage
5 V
Supply Current
60 mA
Mounting Style
SMD/SMT
Package / Case
EMP-16
Lead Free Status / Rohs Status
Lead free / RoHS Compliant

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Power return T O C for unipolar drive (figure 15)
Relatively high V
— Relatively fast current decay
— Energy returned to power supply
— Only small energy losses
— Winding leakage flux must be considered
— Potential cooling problems
Power return to T O C for bi-level drive (figure 16)
— Very fast current decay
— Energy returned to power supply
— Only small energy losses
— Winding leakage flux must be considered
How to use the diagrams:
1. What is the maximum motor current in the application?
2. How to choose timing components.
3. What is the maximum t
4. Figures 17, 18 and 20 show typical saturation voltages vs. output current levels for different output transistors.
5. Shaded areas represent operating conditions outside the safe operating area.
DIAGRAMS
• The ambient temperature sets the maximum allowable power dissipation in the IC, which relates to the
• Figures 23 and 24 give the relationship between motor currents and their dissipations. The sum of these
• When no Bi-level or voltage doubling is utilized, the maximum motor current can be found directly in figure
• Figure 21 shows the relationship between C
• Figure 22 shows the relationship between duty cycle, pulse width, and step frequency. Check specifications
motor currents and the duty cycle of the Bi-level function. For NJM3517, without any measures taken to
reduce the chip temperature via heatsinks, the power dissipation vs. temperature follows the curve in figure
18.
power dissipations must never exceed the previously-established value, or life expectancy will be drastically
shortened.
23 .
otherwise the current in the winding will rise to a value many times the rated current, causing an overheated
IC or motor.
for the valid operating area.
Z
gives:
On
pulse-width at a given frequency?
T
, R
T
, and t
On
. Care must be taken to keep the t
given for information , without any guarantee
as regards either mistakes or omissions. The
application circuits in this databook are
described only to show representative usages
of the product and not intended for the
guarantee or permission of any right including
the industrial rights.
The specifications on this databook are only
NJM3517
On
time short,

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