TC621 Microchip Technology Inc., TC621 Datasheet
TC621
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TC621 Summary of contents
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... This output can be used to provide ON/OFF control to a cooling fan or heater. The TC621 provides the same output functions except that the logical states are inverted. ...
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... Suffix code "H" denotes heating option (Low true CONTROL output). DS21439C-page 2 Temp. to Voltage Converter TC620 + V REF – GEN V REF + V REF – GEN Thermistor Interface Circuit TC621 + V REF – GEN V REF + V REF – GEN LOW LIMIT 6 HIGH LIMIT 5 ...
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... Plastic .......................................... 8 mW/°C Operating Temperature: M Version......................... -55°C to +125°C V Version ......................... -40°C to +125°C E Version ........................... -40°C to +85°C C Version .............................. 0°C to +70°C Storage Temperature ......................... -65°C to +150°C TC620/TC621 ELECTRICAL SPECIFICATIONS Electrical Characteristics 25°C, unless otherwise specified. A Symbol Parameter V Supply Voltage Range ...
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... TC620/TC621 2.0 PIN DESCRIPTIONS The descriptions of the pins are listed in Table 2-1. TABLE 2-1: PIN FUNCTION TABLE Pin No. (8-Pin PDIP) (8-Pin SOIC) Symbol 0°C to +70°C -40°C to +85°C -40°C to +125° Internal Connection. 2 LOW SET Low temperature set point. Connect an external 1% resistor from LOW SET set trip point ...
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... Low Set Point Low Limit Output High Limit Output Control Output (Cool Option Control Output (Heat Option) FIGURE 3-1: TC620/TC621 Input vs. Output Logic 3.1 Programming the TC620 The resistor values to achieve the desired trip point temperatures on HIGH SET and LOW SET are calculated using Equation 3-1: EQUATION 3-1: 2 ...
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... TC620/TC621 3.3 Using the TC621 The TC621 operation is similar to that of the TC620, but requires an external NTC thermistor. Use the resis- tance versus temperature curve of the thermistor to determine the values of the programming resistors. Note that the pin numbers for the HIGH SET and LOW SET programming resistors for the TC621 are reversed versus that of the TC620 (i ...
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... LOW TEMP set point. This provides the hysteresis. In this application, the fan turns on only when required. The TC621 uses an external thermistor to monitor the ambient temperature. This adds one part, but allows more flexibility with the location of the temperature sensor ...
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... TC620/TC621 High Low Temp. Temp TC620 3 4 FIGURE 4-3: Heating and Cooling Application DS21439C-page 8 4.5V to 18V TC4469 Warning 7 8 High Low Temp. Temp. Warning Heating/Cooling Equipment © 2006 Microchip Technology Inc. ...
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... Standard Reel Component Orientation for 713 Suffix Device Carrier Width (W) Pitch (P) Part Per Full Reel 2500 Pin 1 .260 (6.60) .240 (6.10) .070 (1.78) .040 (1.02) .040 (1.02) .020 (0.51) .015 (0.38) .008 (0.20) .022 (0.56) .015 (0.38) TC620/TC621 W Reel Size 13 in .310 (7.87) .290 (7.37) 3° Min. .400 (10.16) .310 (7.87) Dimensions: inches (mm) DS21439C-page 9 ...
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... TC620/TC621 Package Dimensions (Continued) 8-Pin SOIC .050 (1.27) Typ. .197 (5.00) .189 (4.80) .020 (0.51) .010 (0.25) .013 (0.33) .004 (0.10) DS21439C-page 10 Pin 1 .157 (3.99) .244 (6.20) .150 (3.81) .228 (5.79) .069 (1.75) .053 (1.35) ° 8 Max. .050 (1.27) .016 (0.40) .010 (0.25) .007 (0.18) Dimensions: inches (mm) © 2006 Microchip Technology Inc. ...
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... The Microchip Worldwide Site (www.microchip.com) Please specify which device, revision of silicon and Data Sheet (include Literature #) you are using. New Customer Notification System Register on our web site (www.microchip.com/cn) to receive the most current information on our products. © 2006 Microchip Technology Inc. TC620/TC621 DS21439C-page 11 ...
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... TC620/TC621 NOTES: DS21439C-page 12 © 2006 Microchip Technology Inc. ...
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... Use of Microchip’s products as critical components in life support systems is not authorized except with express written approval by Microchip. No licenses are conveyed, implicitly or otherwise, under any Microchip intellectual property rights. © 2006 Microchip Technology Inc. Trademarks The Microchip name and logo, the Microchip logo, Accuron, dsPIC ...
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... Taiwan - Kaohsiung Tel: 886-7-536-4818 Fax: 886-7-536-4803 Taiwan - Taipei Tel: 886-2-2500-6610 Fax: 886-2-2508-0102 Thailand - Bangkok Tel: 66-2-694-1351 Fax: 66-2-694-1350 © 2006 Microchip Technology Inc. EUROPE Austria - Wels Tel: 43-7242-2244-399 Fax: 43-7242-2244-393 Denmark - Copenhagen Tel: 45-4450-2828 Fax: 45-4485-2829 France - Paris ...