TC623

TC623 3V, Dual Trip Point Temperature Sensor Features Integrated Temp Sensor and Detector Operate from a Supply Voltage as Low as 2.7V Replaces Mechanical Thermostats and Switches On-Chip Temperature Sense 8-Pin DIP or SOIC for Direct PCB Mounting 2 User Programmable Temperature Set Points 2 Independent Temperature Limit Outputs Heat/Cool Regulate Output Package Type SOIC NC LOW SET HIGH SET GND 1 2 3 4 8 VCC LOW LIMIT HIGH LIMIT CONTROL 7 6 5 TC623CCOA TC623CEOA TC623CVOA PDIP NC 1 2 3 4 8 VCC LOW LIMIT HIGH LIMIT CONTROL Applications CPU Thermal Management System Over or Under Temperature Shutdown Advanced Thermal Warning Fan Speed Control Circuits Accurate Appliance Temperature Sensing Environmental Control LOW SET HIGH SET GND TC623CCPA TC623CEPA 7 6 5 General Description The TC623 is a 3V solid-state, programmable temperature sensor designed for use in thermal management applications. It features dual thermal interrupt outputs (LOW LIMIT and HIGH LIMIT) each of which are set with an external resistor. The HIGH LIMIT and LOW LIMIT outputs are driven active (high) when measured temperature equals the user programmed limits. The CONTROL output is driven active (high) when temperature equals the HIGH LIMIT set point and turned off when temperature falls below the LOW LIMIT set point. The CONTROL output can be used to provide simple ON/OFF control to a cooling fan if so desired. Low voltage operation, easy set point programming, small size an...