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TC621CCPA Fiches technique(PDF) 1 Page - TelCom Semiconductor, Inc |
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TC621CCPA Fiches technique(HTML) 1 Page - TelCom Semiconductor, Inc |
1 / 6 page 2-15 TELCOM SEMICONDUCTOR, INC. 7 6 5 4 3 1 2 8 TC620 TC621 TC620/1-9 11/4/96 FUNCTIONAL BLOCK DIAGRAM 3 HIGH SET 2 LOW SET 5 CONTROL* 6 HIGH LIMIT VDD 7 LOW LIMIT 8 4 *Suffix code "C" denotes cooling option (high true CONTROL output); suffix code "H" denotes heating option (low true CONTROL output). Q S R Q + + – – TC620 HIGH SET LOW SET 1 THERMISTOR CONTROL* HIGH LIMIT LOW LIMIT Temp to Voltage Converter VREF GEN VREF GEN VREF 3 2 5 6 VDD 7 8 4 Q S R Q + + – – TC621 Thermistor Interface Circuit VREF GEN VREF GEN VREF Ambient Part No. Package Temperature TC621x*EOA 8-Pin SOIC – 40 °C to +85°C TC621x*EPA 8-Pin Plastic DIP – 40 °C to +85°C 5V, DUAL TRIP POINT TEMPERATURE SENSORS FEATURES s User-Programmable Hysteresis and Temperature Set Point s Easily Programs with 2 External Resistors s Wide Temperature Detection Range ................ – 40 °C to +125°C (TC620/621CVx) s External Thermistor for Remote Sensing Applications (TC621x) APPLICATIONS s Power Supply Overtemperature Detection s Consumer Equipment s Temperature Regulators s CPU Thermal Protection ORDERING INFORMATION Ambient Part No. Package Temperature TC620x*COA 8-Pin SOIC 0 °C to +70°C TC620x*CPA 8-Pin Plastic DIP 0 °C to +70°C TC620x*EOA 8-Pin SOIC – 40 °C to +85°C TC620x*EPA 8-Pin Plastic DIP – 40 °C to +85°C TC620CVOA 8-Pin SOIC – 40 °C to +125°C TC621x*COA 8-Pin SOIC 0 °C to +70°C TC621x*CPA 8-Pin Plastic DIP 0 °C to +70°C *The part code will be C or H (see Functional Block Diagram, below, and page 2). GENERAL DESCRIPTION The TC620 and TC621 are programmable logic output temperature detectors designed for use in thermal manage- ment applications. The TC620 features an on-board tem- perature sensor, while the TC621 connects to an external NTC thermistor for remote sensing applications. Both devices feature dual thermal interrupt outputs (HIGH LIMIT and LOW LIMIT), each of which program with a single external resistor. On the TC620, these outputs are driven active (high) when measured temperature equals the user-programmed limits. The CONTROL (hysteresis) out- put is driven high when temperature equals the high limit setting, and returns low when temperature falls below the low limit setting. This output can be used to provide simple ON/OFF control to a cooling fan or heater. The TC621 provides the same output functions except that the logical states are inverted. The TC620/621 are usable over a maximum tempera- ture range of – 40 °C to +125°C. |
Numéro de pièce similaire - TC621CCPA |
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Description similaire - TC621CCPA |
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