vnd830p-e STMicroelectronics, vnd830p-e Datasheet - Page 18

• Manufacturer Part Number: vnd830p-e
• Description: Double Channel High-side Driver
• Manufacturer: STMicroelectronics

VND830P-E
3.4
Open-load detection in off-state
Off-state open-load detection requires an external pull-up resistor (R
OUTPUT pin and a positive supply voltage (V
microprocessor.
The external resistor has to be selected according to the following requirements:
1.
2.
Because I
up resistor R
standby.
The values of V
Figure 24. Open-load detection in off-state
No false open-load indication when load is connected: in this case
it needs to avoid V
V
No misdetection when load is disconnected: in this case the V
V
OUT
OLmax
s(OFF)
= (V
S T A T U S
; this results in the following condition R
PU
IN P U T
PU
OLmin
should be connected to a supply that is switched OFF when the module is in
may significantly increase if V
/ (R
, V
L
+ R
OUT
OLmax
PU
to be higher than V
))R
and I
Doc ID 17546 Rev 2
D R IV E R
L O G IC
L
< V
+
L(off2)
Olmin.
are available in
G R O U N D
+
-
PU
out
V
Olmin
V
C C
) like the +5 V line used to supply the
O L
is pulled high (up to several mA), the pull-
V b a tt.
R
; this results in the following condition
PU
< (V
Chapter 2: Electrical
PU
O U T
- V
OLmax
OUT
Application information
I
L ( o f f 2 )
PU
has to be higher than
) connected between
) / I
L(off2)
specifications.
V
P U
.
R
R
P U
L
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