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L6207Q Datasheet(PDF) 11 Page - STMicroelectronics

No. de pieza L6207Q
Descripción Electrónicos  DMOS dual full bridge driver
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
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L6207Q Datasheet(HTML) 11 Page - STMicroelectronics

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DocID018993 Rev 3
11/27
L6207Q
Circuit description
27
5.2
Logic inputs
Pins IN1A, IN2A, IN1B and IN2B are TTL/CMOS and µC compatible logic inputs. The internal
structure is shown in Figure 6. Typical values for turn-on and turn-off thresholds are
respectively Vth(ON) = 1.8 V and Vth(OFF) = 1.3 V.
Pins ENA and ENB have identical input structures with the exception that the drains of the
overcurrent and thermal protection MOSFETs (one for bridge A and one for bridge B) are
also connected to these pins. Due to these connections, some care must be taken in driving
these pins. Two configurations are shown in Figure 7 and 8. If driven by an open drain
(collector) structure, a pull-up resistor REN and a capacitor CEN are connected, as shown in
Figure 7. If the driver is a standard push-pull structure, the resistor REN and the capacitor
CEN are connected, as shown in Figure 8. The resistor REN should be chosen in the range
from 2.2 k
 to 180 k. Recommended values for REN and CEN are respectively 100 k and
5.6 nF. More information on selecting the values is found in Section 5.5.
Figure 6. Logic inputs internal structure
Figure 7. ENA and ENB pins open collector driving
Figure 8. ENA and ENB pins push-pull driving


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