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Note!
3.1.1 Power Supply Interface
Note!
Note!
Note!
Caution!
LZT 123 7607 R1B
3. ELECTRICAL DESCRIPTION
The power connector electrical characteristics are listed below:
Pin
Signal
Dir
1
V
I
IN
2
OUT-2
O
3
IN-1
I
4
TO_IN
I
5
OUT-1
O
6
GND
I
Signal OUT-2 on the RJ12 connector is switched in parallel to signal
OUT-4 on the 15-pin high density socket. The individual output signals
are generated by two different low side switches inside the module driven
from a common control signal.
The supply voltage V
d.c. V
and GND are reverse polarity and over voltage protected.
IN
The GT47 switches on automatically once the 5V-32V dc supply voltage
is applied.
The GT47 will not switch on if TO_IN is shorted to ground when the dc
supply is applied.
For more information on switching the GT47 on and off please see section
"6. Operation", page 30.
Please be aware that the total current carried via either the V
pins will be the sum of the intrinsic power consumption of the GT47 and
any drive current supplied via OUT-1 or OUT-2 (or other IOs). The
current on either of the V
It is recommended that the system integrator provides appropriate fusing
otherwise the GT47 may be damaged.
Limits
Description
5 - 32 V
Positive power input
32V, 0.25A
Low side switch, short circuit protected
–0.5 - 32 V
Digital Input
V
> 3V, V
IH
Internal Pull Down of 40K
–0.5 - 32 V
Active low control line used to switch
the GT47 off/on.
V
> 5 V, V
IH
Power off/on: t > 0.2 s
Internal Pull Up to V
V
, 0.4A
High side switch, short circuit protected
IN
-
Negative power (ground) input and
return path for TO_IN and the extended
inputs and outputs
, required by the GT47, is in the range 5V - 32V
IN
or GND pins must not exceed 1.5A.
IN
< 2.8 V
IL
< 2 V
IL
of 20K
IN
or GND
IN
13
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