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MAX6694：5-Channel Precision Temperature Monitor with Beta Compensation

Monitors One Local and Four Remote Temperatures, Including a Sub-65nm, Low-Beta Thermal Transistor

The MAX6694 precision multichannel temperature sensor monitors its own temperature and the temperatures of up to four external diode-connected transistors. All temperature channels have programmable alert thresholds. Channels 1 and 4 also have programmable overtemperature thresholds. When the measured temperature of a channel exceeds the respective threshold, a status bit is set in one of the status registers. Two open-drain outputs, active-low OVERT and active-low ALERT, assert corresponding to these bits in the status register. The 2-wire serial interface supports the standard system management bus (SMBus™) protocols: write byte, read byte, send byte, and receive byte for reading the temperature data and programming the alarm thresholds. The MAX6694 is specified for a -40°C to +125°C operating temperature range and is available in 16-pin TSSOP and 5mm x 5mm thin QFN packages.

Key Features Four Thermal-Diode Inputs Beta Compensation (Channel 1) Local Temperature Sensor 1.5°C Remote Temperature Accuracy (+60°C to +100°C) Temperature Monitoring Begins at POR for Fail-Safe System Protection Active-Low ALERT and Active-Low OVERT Outputs for Interrupts, Throttling, and Shutdown Active-Low STBY Input for Hardware Standby Mode Small, 16-Pin TSSOP and TQFN Packages 2-Wire SMBus Interface

MAX6694: Typical Application Circuit Applications/Uses Desktop Computers Notebook Computers Servers Workstations

DataSheet

Parametrics

Quality and Environmental Data

• MAX6694.pdf

Ordering Information