MAX6641AUB94+ Maxim Integrated Products, MAX6641AUB94+ Datasheet - Page 3

• Manufacturer Part Number: MAX6641AUB94+
• Description: IC TEMP MONITOR SMBUS 10UMAX
• Manufacturer: Maxim Integrated Products

Specifications of MAX6641AUB94+

• Function: Fan Control, Temp Monitor
• Topology: ADC, PWM Generator, Tach Counter
• Sensor Type: External & Internal
• Sensing Temperature: -40°C ~ 125°C, External Sensor
• Output Type: I²C™/SMBus™
• Output Alarm: Yes
• Output Fan: Yes
• Voltage - Supply: 3 V ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 10-MSOP, Micro10™, 10-uMAX, 10-uSOP
• Full Temp Accuracy: +/- 4 C
• Digital Output - Bus Interface: Serial (2-Wire)
• Digital Output - Number Of Bits: 8 bit
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ELECTRICAL CHARACTERISTICS (continued)
(V
Note 1: Timing specifications guaranteed by design.
Note 2: The serial interface resets when SMBCLK is low for more than t
Note 3: A transition must internally provide at least a hold time to bridge the undefined region (300ns max) of SMBCLK’s falling edge.
(V
SMBus-COMPATIBLE TIMING (Note 1) (See Figures 2, 3)
Serial-Clock Frequency
Clock Low Period
Clock High Period
Bus Free Time Between Stop and
Start Condition
Hold Time After (Repeated) Start
Condition
S M Bus S tar t C ond i ti on S etup Ti m e
Start Condition Hold Time
Stop Condition Setup Time
Data Setup Time
Data Hold Time
SMBus Fall Time
SMBus Rise Time
SMBus Timeout
Startup Time After POR
CC
CC
600
550
500
450
400
350
300
= +3.0V to +5.5V, T
= 3.3V, T
SMBus-Compatible Temperature Monitor with
3.0
NO SMBus ACTIVITY
PARAMETER
OPERATING SUPPLY CURRENT
3.5
A
vs. SUPPLY VOLTAGE
= +25 C, unless otherwise noted.)
SUPPLY VOLTAGE (V)
4.0
_______________________________________________________________________________________
A
= 0 C to +125 C, unless otherwise noted. Typical values are at V
4.5
Automatic PWM Fan-Speed Controller
5.0
SYMBOL
t
t
t
TIMEOUT
t
t
t
t
HD:STO
HD:DAT
HD:STA
SU:STO
SU:DAT
SU:STA
f
t
t
SCLK
t
t
HIGH
5.5
LOW
BUF
POR
t
t
R
F
-0.5
-1.0
-1.5
-2.0
2.0
1.5
1.0
0.5
(Note 2)
10% to 10%
90% to 90%
90% of SMBCLK to 90% of SMBDATA
10% of SMBDATA to 10% of SMBCLK
90% of SMBCLK to 10% of SMBDATA
10% of SMBDATA to 10% of SMBCLK
10% of SMBCLK to 10% of SMBDATA
(Note 3)
0
0
vs. REMOTE-DIODE TEMPERATURE
REMOTE TEMPERATURE ERROR
25
TEMPERATURE ( C)
CONDITIONS
50
Typical Operating Characteristics
75
TIMEOUT
100
.
125
CC
= 3.3V, T
-1
-2
2
1
0
MIN
250
300
4.7
4.7
4.7
0
29
4
4
4
4
LOCAL TEMPERATURE ERROR
25
A
vs. DIE TEMPERATURE
= +25 C.)
TYP
37
TEMPERATURE ( C)
50
MAX
1000
100
300
500
75
55
100
UNITS
kHz
ms
ms
µs
µs
µs
µs
µs
µs
µs
ns
ns
ns
ns
125
3