NCT51

The NCT51 and NCT52 are SOT23 temperature switches that require no external components and the design is facilitated with factoryprogrammed temperature thresholds. A choice of factorytrimmed temperature trip points are available. Pin selectable hysteresis of +2°C or +10°C allows flexibility to the design. These parts typically consume only 17 mA of current and operate over the entire 55°C to +125°C temperature range while offering accuracies of
0.5°C (typ) and
4°C (max).

The NCT51 has an open drain, active low output, meant for microprocessor reset control. The NCT52 has a CMOS, active high output designed to drive a logic level MOSFET to turn on a fan or heater element.

The NCT51/NCT52 are aimed for hottemperature monitoring (+45°C to +115°C). These devices assert a logic signal when the temperature goes above the threshold.

The NCT51 and NCT52 are offered in three standard temperature thresholds. Available in 5Pin SOT23A packages, these parts are ideal for applications requiring high integration, small size, low power and low installed cost.