TCN75-5.0MOAG Microchip

TCN75 2-Wire Serial Temperature Sensor and Thermal Monitor Features: Package Type Solid-State Temperature Sensing: SOIC 0.5C Accuracy (Typ.) SDA 1 8 V Operates from -55C to +125C DD Operating Supply Range: 2.7V to 5.5V SCL 2 7 A0 TCN75MOA Programmable Trip Point and Hysteresis with A1 INT/CMPTR 3 6 Power-up Defaults A2 Standard 2-Wire Serial Interface GND 4 5 Thermal Event Alarm Output Functions as Interrupt or Comparator/Thermostat Output MSOP Up to 8 TCN75s may Share the Same Bus SDA Shutdown Mode for Low Standby Power V 1 8 DD Consumption SCL 7 A0 2 5V Tolerant I/O at V = 3V TCN75MUA DD 3 6 A1 INT/CMPTR Low Power: 5 4 A2 - 250 A (Typ.) Operating GND -1 A (Typ.) Shutdown Mode 8-Pin SOIC and MSOP Packaging General Description: Applications: The TCN75 is a serially programmable temperature sensor that notifies the host controller when ambient Thermal Protection for High-Performance CPUs temperature exceeds a user programmed set point. Solid-State Thermometer Hysteresis is also programmable. The INT/CMPTR Fire/Heat Alarms output is programmable as either a simple comparator Thermal Management in Electronic Systems: for thermostat operation or as a temperature event - Computers interrupt. Communication with the TCN75 is accomplished via a two-wire bus that is compatible with - Telecom Racks industry standard protocols. This permits reading the - Power Supplies/UPS/Amplifiers current temperature, programming the set point and Copiers/Office Electronics hysteresis, and configuring the device. Consumer Electronics The TCN75 powers up in Comparator mode with a Process Control default set point of 80C with 5C hysteresis. Defaults allow independent operation as a stand-alone thermostat. A shutdown command may be sent via the 2-wire bus to activate the low-power Standby mode. Address selection inputs allow up to eight TCN75s to share the same 2-wire bus for multizone monitoring. All registers can be read by the host and the INT/ CMPTR outputs polarity is user programmable. Both polled and interrupt driven systems are easily accommodated. Small physical size, low installed cost, and ease-of-use make the TCN75 an ideal choice for implementing sophisticated system management schemes. 2001-2012 Microchip Technology Inc. DS21490D-page 1TCN75 Device Selection Table Part Number Supply Voltage Package Junction Temperature Range TCN75-3.3MOA 3.3 8-Pin SOIC -55C to +125C TCN75-5.0MOA 5.0 8-Pin SOIC -55C to +125C TCN75-3.3MUA 3.3 8-Pin MSOP -55C to +125C TCN75-5.0MUA 5.0 8-PIn MSOP -55C to +125C Functional Block Diagram INT/CMPTR TCN75 9-Bit DS Control A/D Logic Converter Temp Sensor Register Set V DD T Configuration SET Temperature T HYST SDA SCL Two Wire Serial Port Interface A 0 A 1 A 2 DS21490D-page 2 2001-2012 Microchip Technology Inc.