L6228QTR STMicroelectronics, L6228QTR Datasheet - Page 15

• Manufacturer Part Number: L6228QTR
• Description: IC DVR BIPO STEP MOTOR 32-VFQFPN
• Manufacturer: STMicroelectronics
• Type: Bipolar Stepper Motor Driverr

Specifications of L6228QTR

• 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: Surface Mount
• Package / Case: 32-VFQFN, 32-VFQFPN
• Product: Stepper Motor Controllers / Drivers
• Operating Supply Voltage: 48 V
• 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: 497-6864-2; L6228QTR

L6228Q
Figure 15
capacity. It has to be said that t
this condition, but it can be smaller than t
to work but the off time t
So, small C
therefore, higher switching frequency), but, the smaller is the value for C
influential will be the noises on the circuit performance.
Figure 14. t
⎧
⎨
⎩
t
t
t
ON
ON
RCRISE
>
>
shows the lower limit for the on time t
t
t
RCRISE
ON MIN
OFF
OFF
(
= 600 · C
value gives more flexibility for the applications (allows smaller on time and,
)
versus C
–
=
t
1 . 10
1 . 10
DT
100
2.5μs
10
1
4
3
OFF
0.1
OFF
⎫
⎬
⎭
OFF
is not more constant.
Doc ID 14321 Rev 4
ON
and R
(typ. value)
is always bigger than t
R
off
OFF
= 20kΩ
1
RCRISE
R
off
Coff [nF]
ON
= 47kΩ
- t
for having a good PWM current regulation
DT
R
. In this last case the device continues
off
ON(MIN)
= 100kΩ
10
because the device imposes
Circuit description
100
OFF
, the more
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