7-Channel Precision Temperature Monitor - Maxim Integrated Products
Description
19-3004; Rev 0; 12/07
7-Channel Precision Temperature Monitor
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General Description
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Features
Six Thermal-Diode Inputs Local Temperature Sensor 1°C Remote Temperature Accuracy (+60°C to +100°C) Temperature Monitoring Begins at POR for FailSafe System Protection ALERT and OVERT Outputs for Interrupts, Throttling, and Shutdown STBY Input for Hardware Standby Mode Small, 20-Pin TSSOP Package 2-Wire SMBus Interface Penryn CPU-Compatible Pin- and Register-Compatible with MAX6689
MAX6636
The MAX6636 precision multichannel temperature sensor monitors its own temperature and the temperatures of up to six external diode-connected transistors.
All temperature channels have programmable alert thresholds.
Channels 1, 4, 5, and 6 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, OVERT and 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 MAX6636 is specified for a -40°C to +125°C operating temperature range and is available in a 20-pin TSSOP package.
Applications
Desktop Computers Notebook Computers Workstations Servers
SMBus is a trademark of Intel Corp.
Pin Configuration appears at end of data sheet.
PART
Ordering Information
PINPACKAGE SLAVE ADDRESS PKG CODE
MAX6636UP9A+ 20 TSSOP 1001 101 U20-2 Note: Device specified over the -40°C to +125°C temperature range.
+Denotes lead-free package.
Typical Application Circuit
+3.
3V CPU 1 2200pF 2 3 2200pF 4 5 2200pF 6 7 2200pF 8 9 2200pF 10 DXN5 DXN6 11 DXN4 DXP5 STBY 13 DXP6 12 2200pF GPU DXN3 DXP4 OVERT 15 N.
C.
14 TO SYSTEM SHUTDOWN DXN2 DXP3 ALERT 17 VCC 16 INTERRUPT TO μP DXN1 DXP2 DXP1 GND 20
4.
7kΩ EACH ...
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