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VNQ660SP Datasheet(PDF) 16 Page - STMicroelectronics

No. de pieza VNQ660SP
Descripción Electrónicos  Quad channel high side solid state relay
PDF  26 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

VNQ660SP Datasheet(HTML) 16 Page - STMicroelectronics

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Application information
VNQ660SP
16/26
3
Application information
Figure 23.
Application schematic
Note:
Channels 3 & 4 have the same internal circuit as channel 1 & 2.
3.1
GND protection network against reverse battery
This section provides two solutions for implementing a ground protection network against
reverse battery.
3.1.1
Solution 1: a resistor in the ground line (RGND only)
This can be used with any type of load.
The following show how to dimension the RGND resistor:
1.
RGND ≤600mV / 2 (IS(on)max)
2.
RGND ≥ ( - VCC) / ( - IGND)
where - IGND is the DC reverse ground pin current and can be found in the absolute
maximum rating section of the device datasheet.
Power dissipation in RGND (when VCC < 0 during reverse battery situations) is:
PD = ( - VCC)
2/ R
GND
VCC
Dld
+5V
Rprot
STATUS
INPUT1
+5V
OUTPUT3
OUTPUT1
OUTPUT2
OUTPUT4
INPUT3
INPUT4
Rprot
Rprot
Rprot
Rprot
INPUT2
µC
GND
DGND
RGND
VGND
.



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