MAX6660AEE+ Maxim Integrated Products, MAX6660AEE+ Datasheet - Page 3

• Manufacturer Part Number: MAX6660AEE+
• Description: IC REG FAN SPEED 16-QSOP
• Manufacturer: Maxim Integrated Products

Specifications of MAX6660AEE+

• Function: Fan Control, Temp Monitor
• Topology: ADC, Comparator, Fan Control, Multiplexer, Register Bank
• Sensor Type: External
• Sensing Temperature: 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: 16-QSOP
• Full Temp Accuracy: +/- 5 C
• Digital Output - Bus Interface: Serial (2-Wire)
• Digital Output - Number Of Bits: 10 bit + Sign
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ELECTRICAL CHARACTERISTICS (continued)
(V
T
Note 1: Junction Temperature = T
Note 2: T
Note 3: Guaranteed by design. Not production tested.
Note 4: The MAX6660 includes an SMBus timeout, which resets the interface whenever SMBCLK or SMBDATA has been low for
Note 5: Note that a transition must internally provide at least a hold time in order to bridge the undefined region (300ns max) of
Fan Output On-Resistance
Tach Input Transition Level
Tach Input Hysteresis
Fan Output Current
Fan Output Current Limit (Note 3)
A
Current-Sense Tach Threshold
Current-Sense Tach Hysteresis
SMBus INTERFACE: SMBDATA, ALERT, STBY, OVERT
Logic Input Low Voltage
Logic Input High Voltage
Input Leakage Current
Output Low Sink Current
Input Capacitance
Output High Leakage Current
Serial Clock Frequency
Bus Free Time Between Stop
and Start Conditions
Start Condition Setup Time
Repeat Start Condition Setup
Time
Start Condition Hold Time
Stop Condition Setup Time
Clock Low Time
Clock High Time
Data Setup Time
Data Hold Time
Receive SMBCLK/SMBDATA
Rise Time
Receive SMBCLK/SMBDATA
Fall Time
SMBus Timeout
CC
= +25°C.) (Note 1)
= +3V to +5.5V, V
greater than 25ms. This feature can be disabled by setting bit 2 of the Fan Gain register at 16h/1Bh to a 1. When the timeout
is disabled, the minimum clock frequency is DC.
SMBCLK’s falling edge.
RJ
PARAMETER
, Remote Temperature accuracy is guaranteed by design, not production tested.
Fan-Speed Regulator with SMBus Interface
Remote-Junction Temperature-Controlled
_______________________________________________________________________________________
VFAN
= +12V, T
A
. This implies zero dissipation in pass transistor (no load, or fan turned off).
SYM B O L
t
t
TIMEOUT
t
t
t
t
HD:DAT
SU:STA
HD:STA
SU:STO
SU:DAT
I_leak
t
R
t
f
t
HIGH
LOW
V
V
I
C
SCL
BUF
ONF
t
OL
t
A
R
IH
F
IL
in
= -40°C to +125°C, unless otherwise specified. Typical values are at V
V
V
250mA load
V
V
V
V
V
V
(Note 4)
90% to 90%
10% of SMBDATA to 90% of SMBCLK
90% of SMBCLK to 10% of SMBDATA
10% to 10%
90% to 90%
90% of SMBDATA to 10% of SMBCLK
(Note 5)
SMBDATA and SMBCLK time low for reset
of serial interface
VFAN
FAN
CC
CC
CC
IN
OL
OH
= GND or V
= 0.4V
= +3.0V to +5.5V
= +3.0V
= +5.5V
= 5.5V
= 12V
= 12V
CONDITIONS
CC
MIN
250
250
2.2
2.6
4.7
4.7
4.7
50
25
-2
6
0
4
4
4
0
TYP
10.5
190
320
0.3
20
5
4
CC
MAX
410
100
300
0.8
+2
40
1
1
= +3.3V and
UNITS
kHz
mA
mA
mA
mA
mV
mA
ms
µA
pF
µA
µs
µs
µs
µs
µs
µs
µs
ns
µs
µs
ns
Ω
V
V
V
3