Telcom Semiconductor inc. TC622, TC624 free download

File name TC622, TC624 432 sens.pdf

PROGRAMMABLE SOLID-STATE TEMPERATURE SWITCH TC622 TC624 LOW COST SINGLE TRIP POINT TEMPERATURE SENSOR FEATURES s s s s Temperature Set Point Easily Programs with a Single External Resistor Operates with 2.7V Power Supply (TC624) TO-220 Package for Direct Mounting to Heatsink (TC622xAT) or Standard 8-Pin PDIP and SOIC Cost Effective The TC622 has a power supply voltage range of 4.5V to 18.0V while the TC624 operates over a power supply range of 2.7V to 4.5V. Both devices are usable over a temperature range of ­ 40°C to +125°C (TC622Vxx, TC624Vxx). Both devices feature low supply current making them suitable for many portable applications. Eight-pin through-hole and surface mount packages are available. The TC622 is also offered in a 5-pin TO-220 package. FUNCTIONAL BLOCK DIAGRAM TEMP SENSOR APPLICATIONS s s s s s Power Supply Over-temperature Detection Consumer Electronics Fire/ Heat Detection UPS's, Amplifiers, Motors CPU Thermal Management in PC's GENERAL DESCRIPTION The TC622 and TC624 are programmable solid state temperature sensors designed to replace mechanical switches in sensing and control applications. Both devices integrate the temperature sensor along with a voltage reference and all required detector circuitry to form a stand-alone temperature switch. The desired temperature set point is set by the user with a single external resistor. Ambient temperature is sensed and compared to the programmed setpoint. The OUT and OUT outputs are driven to their active state when the measured temperature exceeds the programmed setpoint. TEMPERATURE TO VOLTAGE CONVERTER OUT OUT VOLTAGE REFERENCE GENERATOR TSET VDD GND ORDERING INFORMATION Part No. TC622COA TC622CPA TC622EAT TC622EOA TC622EPA TC622VAT TC622VOA TC622VPA TC624COA TC624CPA TC624EOA TC624EPA TC624VOA TC624VPA TC622/24-4 9/25/96 Voltage Operation 4.5V 4.5V 4.5V 4.5V 4.5V 4.5V 4.5V 4.5V 2.7V 2.7V 2.7V 2.7V 2.7V 2.7V to 18V to 18V to 18V to 18V to 18V to 18V to 18V to 18V to 4.5V to 4.5V to 4.5V to 4.5V to 4.5V to 4.5V Package 8-Pin SOIC 8-Pin Plastic DIP 5-Pin TO-220 8-Pin SOIC 8-Pin Plastic DIP 5-Pin TO-220 8-Pin SOIC 8-Pin Plastic DIP 8-Pin SOIC 8-Pin Plastic DIP 8-Pin SOIC 8-Pin Plastic DIP 8-Pin SOIC 8-Pin Plastic DIP Ambient Temperature 0°C to +70°C 0°C to +70°C ­ 40°C to +85°C ­ 40°C to +85°C ­ 40°C to +85°C ­ 40°C to +125°C ­ 40°C to +125°C ­ 40°C to +125°C 0°C to +70°C 0°C to +70°C ­ 40°C to +85°C ­ 40°C to +85°C ­ 40°C to +125°C ­ 40°C to +125°C TelCom Semiconductor reserves the right to make changes in the circuitry and specifications of its devices. 1 PROGRAMMABLE SOLID-STATE TEMPERATURE SWITCH TC622 TC624 ABSOLUTE MAXIMUM RATINGS* Supply Voltage (TC622) ... 20V (TC624) ... 5.5V Input Voltage Any Input ... (GND ­ 0.3V) to (VDD +0.3V) Operating Temperature ... ­ 40°C to +125°C C Version ... 0°C to +70°C E Version ...