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TC623CVOA Fiches technique(PDF) 1 Page - TelCom Semiconductor, Inc |
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TC623CVOA Fiches technique(HTML) 1 Page - TelCom Semiconductor, Inc |
1 / 3 page 2-25 TELCOM SEMICONDUCTOR, INC. 7 6 5 4 3 1 2 8 3V, DUAL TRIP POINT TEMPERATURE SENSOR TC623 FEATURES s Integrated Temp Sensor and Detector Operate from a Supply Voltage as Low as 2.7V s Replaces Mechanical Thermostats and Switches s On-Chip Temperature Sense s 8-Pin DIP or SOIC for Direct PCB Mounting s 2 User-Programmable Temperature Set Points s 2 Independent Temperature Limit Outputs s Heat/Cool Regulate Output APPLICATIONS s CPU Thermal Management s System Over-or Under-Temperature Shutdown s Advanced Thermal Warning s Fan Speed Control Circuits s Accurate Appliance Temperature Sensing s Environmental Control GENERAL DESCRIPTION The TC623 is a 3V solid-state, programmable tempera- ture sensor designed for use in thermal management appli- cations. It features dual thermal interrupt outputs (LOW LIMIT and HIGH LIMIT) each of which program with a single 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 setpoint, and turned off when temperature falls below the LOW LIMIT setpoint. The CONTROL output can be used to provide simple ON/OFF control to a cooling fan if so desired. Low voltage operation, easy setpoint programming, small size and low cost make the TC623 an ideal choice for many thermal management applications. ORDERING INFORMATION Temperature Part No. Package Range TC623CCOA 8-Pin SOIC 0 °C to +70°C TC623CCPA 8-Pin Plastic DIP 0 °C to +70°C TC623CEOA 8-Pin SOIC – 40 °C to +85°C TC623CEPA 8-Pin Plastic DIP – 40 °C to +85°C TC623CVOA 8-Pin SOIC – 40 °C to +125°C FUNCTIONAL BLOCK DIAGRAM 3 HIGH SET 2 LOW SET 1 NC 4 GND 5 CONTROL 6 HIGH LIMIT VCC 7 LOW LIMIT 8 LATCH Q S R + + – – TC623 R < R LOW HIGH VREF GEN. VREF GEN. VREF TEMP TO VOLTAGE CONVERTER GND HIGH SET LOW SET NC GND HIGH SET LOW SET NC VCC HIGH LIMIT CONTROL LOW LIMIT VCC HIGH LIMIT CONTROL LOW LIMIT 8 7 6 5 1 2 3 4 1 8 2 7 3 6 4 5 TC623CCOA TC623CEOA TC623CVOA TC623CCPA TC623CEPA PIN CONFIGURATION (DIP and SOIC) NOTE: Latch Q Output, ("C" Option), is a Standard Device. Contact Factory for Latch Q Output, ("H" Option). TC623-5 9/18/96 |
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