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NCT51 - Ultra Small Temperature Switch

General Description

NCT51 NCT52 1,2 1,2 33 44 5 5

Ground.

Ground both pins together close to the chip.

Pin 2 provides the lowest thermal resistance to the die.

Key Features

  • 5.
  • Pin SOT.
  • 23A.
  • Factory.
  • Programmed Thresholds from +45°C to +115°C in 10°C Increments.
  • Pin.
  • Selectable +2°C or +10°C Hysteresis.
  • "0.5°C (Typ) Threshold Accuracy Over Full Temperature Range.
  • No External Components Required.
  • 17 µA Supply Current Typical.

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Datasheet Details

Part number NCT51
Manufacturer onsemi
File Size 119.65 KB
Description Ultra Small Temperature Switch
Datasheet download datasheet NCT51 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
NCT51, NCT52 Ultra Small Temperature Switch with Pin-Selectable Hysteresis The NCT51 and NCT52 are SOT–23 temperature switches that require no external components and the design is facilitated with factory–programmed temperature thresholds. A choice of factory–trimmed 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 µA 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.