2-Channel Temperature Monitor with Dual,
Automatic, PWM Fan-Speed Controller
2
Maxim Integrated
MAX6639/MAX6639F
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
CC
= +3.0V to +3.6V, T
A
= 0癈 to +125癈, unless otherwise noted. Typical values are at V
CC
= +3.3V, T
A
= +85癈.) (Note 1)
Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
V
CC
to GND..............................................................-0.3V to +4V
PWM1, PWM2, TACH1, and TACH2 to GND ......-0.3V to +13.5V
DXP1 and DXP2 to GND..........................-0.3V to +(V
CC
+ 0.3V)
DXN to GND ..........................................................-0.3V to +0.8V
SCL, SDA, THERM, OT, FANFAIL, ADD,
and ALERT to GND ..............................................-0.3V to +6V
SDA, OT, THERM, ALERT, FANFAIL,
PWM1, and PWM2 Current .............................-1mA to +50mA
DXN Current .......................................................................?mA
ESD Protection (all pins, Human Body Model) ..................2000V
Continuous Power Dissipation (T
A
= +70癈)
16-Pin QSOP (derated 8.3mW/癈 above +70癈) ....... 667mW
16-Pin TQFN 5mm x 5mm
(derated at 33.3mW/癈 above +70癈)................2666.7mW
Operating Temperature Range .........................-40癈 to +125癈
Junction Temperature......................................................+150癈
Storage Temperature Range ............................-65癈 to +150癈
Lead Temperature (soldering, 10s).................................+300癈
Soldering Temperature (reflow).......................................+260癈
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Operating Supply Voltage Range
V
CC
+3.0
+3.6
V
Standby Current
SMB static, sleep mode
3
10
礎
Operating Current
Interface inactive, ADC active
0.5
1
mA
V
CC
= +3.3V, +60癈 d T
A
d +100癈 and
+60癈 d T
R
d +100癈
-1.0
+1.0
V
CC
= +3.3V, +40癈 d T
A
d +100癈 and
0癈 d T
R
d +145癈
-2.5
+2.5
External Temperature Error
MAX6639AEE, MAX6639ATE:
n = 1.008
MAX6639FAEE: n = 1.021
V
CC
= +3.3V, 0癈 d T
R
d +145癈
-3.8
+3.8
癈
V
CC
= +3.3V, +25癈 d T
A
d +100癈
-2.0
+2.0
Internal Temperature Error
MAX6639AEE, MAX6639ATE
V
CC
= +3.3V, 0癈 d T
A
d +125癈
-4.0
+4.0
癈
V
CC
= +3.3V, +25癈 d T
A
d +100癈
-7.7
-2.5
Internal Temperature Error
MAX6639FAEE
V
CC
= +3.3V, 0癈 d T
A
d +125癈
-10.4
-0.1
癈
Supply Sensitivity of Temperature
Measurement
?.2
癈/V
+0.125
癈
Temperature Resolution
11
Bits
Conversion Time
125
ms
Conversion-Rate Timing Error
-10
+10
%
PWM Frequency Error
-10
+10
%
Tachometer Accuracy
T
A
= +60癈 to +100癈
?
%
High level
70
100
130
Remote-Diode Sourcing Current
Low level
7.0
10
13.0
礎
DXN Source Voltage
0.7
V
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