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Product Variant Information section
Product Specification Section
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Stock: 6,000

On Order: 0
Factory Stock:Factory Stock: 0
Factory Lead Time: 12 Weeks
Minimum Order: 3,000
Multiple Of: 3,000
Quantity Web Price
3,000+ $0.65


Attributes Table
Output Type Digital
Supply Voltage 2.7V to 5.5V
Operating Temp Range -40°C to +125°C
Output Current-Max 20mA
Features and Applications

The MCP9509 series devices are programmable logic output temperature switches. The temperature switch threshold can be programmed with a single external resistor, which provides high design flexibility and simplicity. In addition, this family of devices provide user programmable features such as 2°C and 10°C (typical) switch hysteresis and output structure configuration.

The MCP9509 provides an open drain output, whereas the MCP9510 is offered in three different user selectable output configurations: Active-low/Active-high push pull and Active-Low Open-Drain output with an internal 100 kΩ pull-up resistor. 


  • Resistor-Programmable Temperature Switch
  • Wide Operating Voltage Range: 2.7 V to 5.5 V
  • 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


  • Power Supply Thermal Shutdown
  • Temperature Alarm
  • Thermostat Control
  • Fan Control
  • Base-Stations
  • Automotive