MAX6699_07 Datasheet, PDF (1/19 Pages) Maxim Integrated Products – 5-Channel Precision Temperature Monitor

19-3859; Rev 2; 7/07
5-Channel Precision Temperature Monitor
General Description
The MAX6699 precision multichannel temperature sen-
sor 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 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 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.
Applications
Desktop Computers
Notebook Computers
Workstations
Servers
Features
♦ 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
Ordering Information
PART
TEMP RANGE
MAX6699EE_ _ -40°C to +125°C
MAX6699UE_ _ -40°C to +125°C
See the Slave Address section.
PIN-
PACKAGE
16 QSOP
16 TSSOP
PKG
CODE
E16-1
U16-1
SMBus is a trademark of Intel Corp.
Pin Configuration appears at end of data sheet.
Typical Application Circuit
+3.3V
CPU
2200pF
1 _DXP1
2 _DXN1
GND ¹⁶
MAX6699 _SMBCLK 15
4.7kΩ
EACH
CLK
3 _DXP2
2200pF
4 _DXN2
5 _DXP3
2200pF
6 _DXN3
7 _DXP4
2200pF
8 _DXN4
SMBDATA ¹⁴
ALERT ¹³
V_CC ¹²
OVERT ¹¹
N.C.1 ¹⁰
N.C.2 ⁹
0.1µF
DATA
INTERRUPT
TO µP
TO SYSTEM
SHUTDOWN
________________________________________________________________ Maxim Integrated Products 1
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