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AN4355 bảng dữ liệu(PDF) 13 Page - STMicroelectronics

tên linh kiện AN4355
Giải thích chi tiết về linh kiện  The L6480 and L6482 devices are motor controllers providing
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AN4355 bảng dữ liệu(HTML) 13 Page - STMicroelectronics

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AN4355
Supply management
25
Figure 8. Gate drivers supply circuit
The supply circuit for the device logic is shown in Figure 9. When the VREG voltage is
generated through the integrated linear regulator the VCCREG pin must be connected to
a supply voltage ranging from VREG + 3 V = 6.3 V (3 V is the dropout voltage of the linear
regulator) and VCC. VCCREG must be always lower than VCC otherwise the ESD protection
diode is turned on and the device can be damaged.
The device can be protected from this event adding an external low drop diode between the
VCCREG and VCC pins.
In order to supply directly the logic the external supply voltage must be connected to both
the VREG and VCCREG pins; this way the internal linear regulator is disabled.
Figure 9. Logic supply circuit



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