Rainbow Electronics MAX6699 - Manual

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
MAX6699
5-Channel Precision Temperature Monitor
________________________________________________________________ Maxim Integrated Products 1
Ordering Information
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
GND
SMBCLK
SMBDATA
DXN2
DXP2
DXN1
DXP1
V CC
NC1
NC2 DXN4
DXP4
DXN3
DXP3
MAX6699
ALERT
OVERT
2200pF
2200pF
2200pF
2200pF
CPU
0.1 µF
TO SYSTEM
SHUTDOWN
INTERRUPT
TO
µP
DATA
CLK
4.7k Ω
EACH
+3.3V
Typical Application Circuit
19-3477; Rev 0; 9/05
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.
PART TEMP RANGE PIN-PACKAGE
MAX6699EE_ _ -40°C to +125°C 16 QSOP
MAX6699UE_ _ -40°C to +125°C 16 TSSOP
SMBus is a trademark of Intel Corp.
*See the Slave Address section.
Pin Configuration appears at end of data sheet.