Data Sheet

VCC is also the gate voltage that is used to turn the MOSFET on, so it should be noted that lower

VCC voltages will lead to higher MOSFET on resistances, which in turn limits the maximum current

the device can switch.

Load interface

The LOAD LOW and LOAD HIGH pins are connections for your load and load supply. The LOAD

LOW pins are normally disconnected from GND, but when the switch activates the MOSFET turns on

and connects LOAD LOW to GND. There is a flyback (also known as a “freewheeling”) diode between

LOAD LOW and LOAD HIGH. The board’s MOSFET can deliver up to 15 A with VCC at 5 V and can

handle load supply voltages up to 30 V. More details on connecting your load and load supply to the

switch can be found in Section 4.2.

Outputs and indicator LED

The RC switch provides feedback about what state it is in via a yellow indicator LED. The LED

behavior is described in Section 8. Status information is also provided by two additional outputs:

• The GOOD pin indicates the presence of a valid RC signal (10–330 Hz pulse rate,

0.5–2.5 ms pulse width).

• The OUT pin indicates whether the MOSFET is on.

When these outputs are high they will be at the same voltage level as VCC. When low, these outputs

will be at 0 V (ground). These outputs do not have resistors in series with them. Each output can

source or sink up to 25 mA.

Configuration interface

The learning mode jumper on both the top and bottom of the board can be used to get the device

into learning mode and configure it. The configuration procedure is described in Section 9.

4. RC Switch with Medium Low-Side MOSFET Page 19 of 45