5-Channel Precision Temperature Monitor - Maxim Integrated Products
Description
19-3859; Rev 0; 12/05
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5-Channel Precision Temperature Monitor
General Description
The MAX6699 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, 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 MAX6699 is specified for an operating temperature range of -40°C to +125°C and is available in 16-pin QSOP and 16-pin TSSOP packages.
♦ Four Thermal-Diode Inputs ♦ Local Temperature Sensor ♦ 1°C Remote Temperature Accuracy (+60°C to +100°C) ♦ Temperature Monitoring Begins at POR for Fail-Safe System Protection ♦ ALERT and OVERT Outputs for Interrupts, Throttling, and Shutdown ♦ Small 16-Pin QSOP and 16-Pin TSSOP Packages ♦ 2-Wire SMBus Interface
Features
MAX6699
Applications
Desktop Computers Notebook Computers Workstations Servers
SMBus is a trademark of Intel Corp.
PART MAX6699EE_ _ MAX6699UE_ _
Ordering Information
TEMP RANGE -40°C to +125°C -40°C to +125°C PIN-PACKAGE 16 QSOP 16 TSSOP
See the Slave Address section.
Pin Configuration appears at end of data sheet.
Typical Application Circuit
+3.
3V CPU 1 2200pF 2 3 2200pF 4 5 2200pF 6 7 2200pF 8 DXN4 N.
C.
2 9 DXN3 DXP4 OVERT 11 N.
C.
1 10 TO SYSTEM SHUTDOWN DXN2 DXP3 ALERT 13 VCC 12 INTERRUPT TO µP DXN1 DXP2 DXP1 GND 16 4.
7kΩ EACH CLK DATA
MAX6699
SMBCLK 15 SMBDATA 14
0.
1µF
________________________________________________________________ Maxim Integrated Products
1
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