MAX6670 Maxim Integrated Products, MAX6670 Datasheet - Page 2

• Manufacturer Part Number: MAX6670
• Description: (MAX6668 / MAX6670) Remote Temperature Switches
• Manufacturer: Maxim Integrated Products

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ABSOLUTE MAXIMUM RATINGS
V
PGND to GND .......................................................-0.3V to +0.3V
FANOUT to GND ....................................................-0.3V to +15V
DXN to GND ..........................................................-0.3V to +0.8V
DXP, WARN, HYST, FORCEON, OT...........-0.3V to (V
Current into V
Current into FANOUT, PGND ........................................ ±300mA
ELECTRICAL CHARACTERISTICS
(V
Remote Temperature Switches with Integrated
Fan Controller/Driver
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.
2
POWER SUPPLY
Power-Supply Range
Average Supply Current
Operating Current
Power-On Reset (POR) Threshold
POR Threshold Hysteresis
TEMPERATURE SENSOR
FANOUT Temperature
Threshold Accuracy
FANOUT Temperature
Threshold Hysteresis
WARN Temperature Threshold
(MAX6670 Only)
OT Temperature Threshold
(MAX6670 Only)
Supply Sensitivity of Temperature
Threshold
Temperature Sample Frequency
FAN DRIVE OUTPUT
FANOUT Output Voltage Low
Thermal Shutdown
Thermal Shutdown Hysteresis
LOGIC INPUT/OUTPUT
FORCEON Input High Voltage
DD
DD
FORCEON, OT..............................................................±20mA
_______________________________________________________________________________________
to GND ..............................................................-0.3V to +6V
= +3V to +3.6V, T
PARAMETER
DD
, GND, DXP, DXN, WARN, HYST,
A
= -40°C to +125°C, unless otherwise noted. Typical values are at V
SYMBOL
T
POR
V
V
HYST
I
V
T
DD
DD
OL
IH
TH
During sampling
V
T
T
T
T
MAX6670
MAX6668
Relative to FANOUT temperature threshold
Relative to FANOUT temperature threshold
I
SINK
RJ
A
RJ
A
DD
= 0 C to +85 C, V
= -40 C to +125 C, V
DD
= +40 C to +75 C (Note 1),
= +40 C to +75 C (Note 1),
falling edge
= 250mA
+ 0.3V)
CONDITIONS
Continuous Power Dissipation (T
Operating Temperature Range .........................-40°C to +125°C
Storage Temperature Range .............................-60°C to +150°C
Junction Temperature ......................................................+150°C
Lead Temperature (soldering, 10s) .................................+300°C
HYST = GND
HYST = float
HYST = V
DD
10-Pin µMAX (derate 5.6mW/°C above +70°C) ...........444mW
8-Pin µMAX (derate 4.1mW/°C above +70°C) .............333mW
DD
= +3.3V
= +3.3V
DD
DD
= +3.3V and T
0.8 x
MIN
V
3.3
DD
3
1
A
= +70°C)
TYP
+15
+30
110
400
170
0.5
1.5
±1
50
12
20
4
8
8
1
4
A
1
= +25°C.)
MAX
200
650
3.6
2.0
1.6
2.2
1
4
UNITS
mV
µA
µA
C/V
Hz
V
V
V
V
C
C
C
C
C
C