Temperature Sensor -- MCP9509

Microchip Technology’s MCP9509/10 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: 2.7V 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