Airlink101 LX60 Hardware User's Manual page 29

Low Side Current Sink Output
Low side current sink output, for example to drive a relay, is only available using Pin 4 on
the power connector.
External solenoid/relay circuit
Figure 2-16: Low Side Current Sink
Table 2-8: Low Side Current Sink
Pull-up
Off
Off
Note: The router protection circuitry has a high-impedance (~200 kΩ) path to ground. If Pin 4 is
connected to 12 V, there will be a small current flow (~100 μA) into Pin 4 during bootup. This flow is
countered when the internal pull-up resistor (10 kΩ) becomes active after bootup. Depending on
your application, you may need to install an external pull-up resistor (10 kΩ) in order to nullify the
small input current flow for the first 30 seconds during bootup.
Rev. 2 June 2021
V
in
Pin 4 (power connector)
State Minimum
On 300 mA
Off —
LX60
V
Protection
Circuitry
* See Table 2-8 on page 29 for more details.
Typical Maximum
500 mA 850 mA
0 mA —
29
Installation and Startup
in
Internal pull-up
resistor
Off
I = 500 mA (Typ)*
Sink
Comments
I_Typical = 25°C
I_Min = 65°C
I_Max = -30°C
V = 12
in
41111782