vn750-012y STMicroelectronics, vn750-012y Datasheet - Page 10

• Manufacturer Part Number: vn750-012y
• Description: High Side Driver
• Manufacturer: STMicroelectronics

VN750 / VN750S / VN750PT / VN750-B5
OPEN LOAD DETECTION IN OFF STATE
Off state open load detection requires an external pull-up
resistor (R
positive supply voltage (V
supply the microprocessor.
The external resistor has to be selected according to the
following requirements:
1) no false open load indication when load is connected:
Open Load detection in off state
10/31
in this case we have to avoid V
V
V
Olmin
OUT
=(V
; this results in the following condition
PU
PU
) connected between OUTPUT pin and a
/(R
L
+R
STATUS
PU
INPUT
))R
PU
L
<V
) like the +5V line used to
Olmin.
OUT
to be higher than
DRIVER
LOGIC
+
GROUND
+
-
V
V
CC
OL
V batt.
R
2) no misdetection when load is disconnected: in this
Because I
high (up to several mA), the pull-up resistor R
be connected to a supply that is switched OFF when the
module is in standby.
The values of V
the Electrical Characteristics section.
case the V
results in the following condition R
I
L(off2)
.
OUT
s(OFF)
OUT
I
OLmin
L(off2)
may significantly increase if V
has to be higher than V
, V
OLmax
V
PU
and I
R
R
PU
L
L(off2)
PU
<(V
are available in
PU–
out
OLmax
PU
V
is pulled
OLmax
should
; this
)/