L6228N STMicroelectronics, L6228N Datasheet - Page 13

• Manufacturer Part Number: L6228N
• Description: IC DRIVER STEPPER MOTOR 24PWRDIP
• Manufacturer: STMicroelectronics
• Type: Driverr

Specifications of L6228N

• Applications: Stepper Motor Driver
• Number Of Outputs: 1
• Current - Output: 1.4A
• Voltage - Supply: 8 V ~ 52 V
• Operating Temperature: -25°C ~ 125°C
• Mounting Type: Through Hole
• Package / Case: 24-DIP (0.300", 7.62mm)
• Product: Stepper Motor Controllers / Drivers
• Operating Supply Voltage: 8 V to 52 V
• Supply Current: 1.4 A
• Mounting Style: Through Hole
• Motor Type: Stepper
• No. Of Outputs: 4
• Output Current: 3.55A
• Output Voltage: 52V
• Supply Voltage Range: 8V To 52V
• Driver Case Style: DIP
• No. Of Pins: 24
• Operating Temperature Range: -40°C To +150°C
• Rohs Compliant: Yes
• For Use With: 497-6818 - EVAL BOARD FOR L6228Q
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Load: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 497-5350-5; L6228N

Figure 13 shows the lower limit for the on time t
be said that t
than t
So, small C
switching frequency), but, the smaller is the value for C
performance.
Figure 12. t
Figure 13. Area where t
RCRISE
t



RCRISE
t
t
O N
O N
OFF
>
>
OFF
ON
- t
t
t
= 600 · C
O N MIN
RCRISE
DT
is always bigger than t
value gives more flexibility for the applications (allows smaller on time and, therefore, higher
versus C
. In this last case the device continues to work but the off time t
OFF
–
=
t
DT
ON
1 . 10
1 . 10
2.5 s (typ. value)
OFF
100
100
10
10
1
1
can vary maintaining the PWM regulation.
4
3
0.1
0.1
and R
ON(MIN)
OFF
2.5 s (typ. value)
R
off
because the device imposes this condition, but it can be smaller
ON
= 20k
1
1
for having a good PWM current regulation capacity. It has to
R
off
Coff [nF]
Coff [nF]
OFF
= 47k
, the more influential will be the noises on the circuit
R
off
= 100k
10
10
OFF
100
100
is not more constant.
L6228
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