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STSPIN820 Datasheet(PDF) 4 Page - STMicroelectronics

Part # STSPIN820
Description  Advanced 256 microsteps integrated motor driver with step-clock and direction interface
PDF  29 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STSPIN820 Datasheet(HTML) 4 Page - STMicroelectronics

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List of figures
STSPIN820
4/29
DocID031065 Rev 2
List of figures
Figure 1.
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Figure 2.
Pin connection (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 3.
UVLO protection management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 4.
MODEx, STCK and DIR timing diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 5.
PWM current control sequence in mixed decay (DECAY = '0') . . . . . . . . . . . . . . . . . . . . . 17
Figure 6.
OFF time regulation circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 7.
OFF time vs ROFF value . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 8.
Overcurrent and short-circuit protections management . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 9.
Disable time versus REN and CEN values (VDD = 3.3 V) . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 10.
Overcurrent threshold versus temperature normalized at 25 °C . . . . . . . . . . . . . . . . . . . . 21
Figure 11.
Thermal shutdown management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 12.
ESD protection strategy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Figure 13.
Typical application schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Figure 14.
PCB layout example (top layer) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Figure 15.
TFQFPN 4 x 4 x 1.05- 24L package outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Figure 16.
TFQFPN 4 x 4 x 1.05 - 24L suggested footprint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27



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