ADT7468ARQ-REEL7 ON Semiconductor, ADT7468ARQ-REEL7 Datasheet - Page 54
ADT7468ARQ-REEL7
Manufacturer Part Number
ADT7468ARQ-REEL7
Description
IC REMOTE THERMAL CTRLR 24-QSOP
Manufacturer
ON Semiconductor
Series
dBCool®r
Datasheet
1.ADT7468ARQ.pdf
(81 pages)
Specifications of ADT7468ARQ-REEL7
Rohs Status
RoHS non-compliant
Function
Fan Control, Temp Monitor
Topology
ADC, Comparator, Fan Speed Counter, Multiplexer, Register Bank
Sensor Type
External & Internal
Sensing Temperature
-40°C ~ 120°C, External Sensor
Output Type
SMBus™
Output Alarm
No
Output Fan
Yes
Voltage - Supply
3 V ~ 5.5 V
Operating Temperature
-40°C ~ 120°C
Mounting Type
Surface Mount
Package / Case
24-QSOP
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ADT7468
MEASUREMENT
MEASUREMENT
TEMPERATURE
TEMPERATURE
TEMPERATURE
OPERATING
PREVIOUS
CURRENT
T1 (n – 1)
POINT
T1(n)
OP1
IS T1(n) – T1(n – 1) = 0.5 – 0.75° C
IS T1(n) – T1(n – 1) = 1.0 – 1.75° C
IS T1(n) – T1(n – 1) > 2.0° C
IS T1(n) – T1(n – 1)
MONITORING
(OP1 – HYS)
CYCLES
IS T1(n) >
WAIT n
0.25°C
YES
NO
NO
YES
DECREASE T
DECREASE T
DECREASE T
FOR CONSTANT)
DO NOTHING
DO NOTHING
COOLING OF
(SYSTEM IS
MIN
MIN
MIN
BY 1°C
BY 2° C
BY 4° C
MEASUREMENT
TEMPERATURE
TEMPERATURE
THERM LIMIT
OPERATING
OPERATING
HIGH TEMP
CURRENT
LOW TEMP
POINT
T1(n)
OP1
POINT
LIMIT
LIMIT
T
MIN
IS T1(n) < LOW TEMP LIMIT
ACTUAL
T
TEMP
HYSTERESIS
MIN
< HIGH TEMP LIMIT
IS T1(n) > OP1
MONITORING
T1(n) > T
T
MIN
WAIT 2n
CYCLES
AND
AND
AND
< OP1
NO
NO
MIN
YES
YES
DECREASE T
T
INCREASE
MIN
CHANGE
DO NOT
BY 1° C
BY 1° C
MIN
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