19-3477; Rev 0; 1/05
7-Channel Precision Temperature Monitor
General Description
The MAX6697 precision multichannel temperature sen-
sor monitors its own temperature and the temperatures
of up to six external diode-connected transistors. All
temperature channels have programmable alert thresh-
olds. Channels 1, 4, 5, and 6 also have programmable
overtemperature thresholds. When the measured tem-
perature of a channel exceeds the respective thresh-
old, a status bit is set in one of the status registers. Two
open-drain outputs,
OVERT
and
ALERT,
assert corre-
sponding 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 tem-
perature data and programming the alarm thresholds.
The MAX6697 is specified for an operating temperature
range of -40°C to +125°C and is available in 20-pin
QSOP and 20-pin TSSOP packages.
o
Six Thermal-Diode Inputs
o
Local Temperature Sensor
o
1°C Remote Temperature Accuracy (+60°C to
+100°C)
o
Temperature Monitoring Begins at POR for Fail-
Safe System Protection
o
ALERT
and
OVERT
Outputs for Interrupts,
Throttling, and Shutdown
o
Small 20-Pin QSOP and 20-Pin TSSOP Packages
o
2-Wire SMBus Interface
Features
MAX6697
Applications
Desktop Computers
Notebook Computers
Workstations
Servers
SMBus is a trademark of Intel Corp.
PART
MAX6697EP_ _
MAX6697UP_ _
Ordering Information
TEMP RANGE
-40°C to +125°C
-40°C to +125°C
PIN-PACKAGE
20 QSOP
20 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
9
2200pF
10
DXN5
DXP6 11
DXN4
DXP5
NC2 13
DXN6 12
2200pF
GPU
DXN3
DXP4
OVERT 15
NC1 14
TO SYSTEM
SHUTDOWN
DXN2
DXP3
ALERT 17
V
CC
16
0.1µF
INTERRUPT
TO
µP
DXN1
DXP2
DXP1
GND 20
4.7kΩ
EACH
CLK
DATA
MAX6697
SMBCLK 19
SMBDATA 18
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
