Microchip Technology’s MCP9509/10 devices are programmablelogic output temperature switches. Thetemperature switch threshold can be programmed witha single external resistor, which provides high designflexibility and simplicity. In addition, this family ofdevices provide user programmable features such as2°C and 10°C (typical) switch hysteresis and outputstructure configuration. The MCP9509 provides anopen drain output, whereas the MCP9510 is offered inthree different user selectable output configurations:Active-low/Active-high push pull and Active-LowOpen-Drain output with an internal 100 kO pull-upresistor.

  Resistor-Programmable Temperature Switch

  Wide Operating Voltage Range: 2.7V to 5.5V

  Low Supply Current: 30 µA (typical)

  Temperature Switch Accuracy:

  ±0.5°C (typical) at +25°C

  ±1°C (typical) 0°C to +70°C

  ±3.5°C (maximum) 0°C to +125°C

  ±4.5°C (maximum) -20°C to +125°C

  ±2°C (typical) -40°C to +125°C

  Sensor Options available:

  Switch for rising temperature: Cold to Hot (H)

  Switch for falling temperature: Hot to Cold (C)

  Output Configurations:

  Open-Drain:

  External Pull-up Resistor: MCP9509

  Internal Pull-up Resistor: MCP9510

  Active-Low, Push-Pull: MCP9510

  Active-High, Push-Pull: MCP9510

  User Selectable Hysteresis: 2°C or 10°C (typical)

  Space-Saving SOT-23-5, SOT-23-6 Packages

  AEC-Q100 Qualified Grade 1