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AMC6821SDBQG4 Fiches technique(PDF) 3 Page - Texas Instruments

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No de pièce AMC6821SDBQG4
Description  Intelligent Temperature Monitor and PWM Fan Controller
Download  56 Pages
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Fabricant  TI [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI - Texas Instruments

AMC6821SDBQG4 Fiches technique(HTML) 3 Page - Texas Instruments

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ELECTRICAL CHARACTERISTICS
AMC6821
SBAS386C – MAY 2006 – REVISED JULY 2007
At TA = –40°C to +100°C and VDD = +3V or +5V, unless otherwise noted.
AMC6821
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNIT
TEMPERATURE MEASUREMENT
TA = 0°C to +90°C
±0.5
±2.0
°C
Local sensor accuracy
TA = –25°C to +100°C
±1.0
±3.0
°C
TR = +50°C to +100°C
±0.5
±2.0
°C
Remote sensor accuracy(1)
TR = –40°C to +125°C
±1.0
±3.0
°C
Sensor resolution
Both channels
0.125
°C
Conversion time
Two channels
62.5
ms
PWM CONTROLLER
PWM frequency range (programmable)
10
40k
Hz
PWM frequency accuracy
+25
°C to +100°C
–6
+7
%
Duty cycle
Programmable
0
100
%
Duty cycle resolution
8-bit
0.39
%/bit
FAN RPM-TO-DIGITAL CONVERTER
Accuracy
+25
°C to +100°C
–6
+7
%
Full-scale count
65535
Nominal input RPM
100
23000
RPM
Internal clock frequency for RPM measurement
100
kHz
DIGITAL INPUT/OUTPUT
VOL
Open-drain output low voltage
Sink current 6 mA, VDD = +3V
0
0.4
V
IOH
Open-drain high-level output leakage current
0.1
1
µA
VIH
Input high voltage
2.1
V
VIL
Input low voltage
0.8
V
IIH
Input high current
–1
µA
IIL
Input low current
1
µA
Input capacitance
5
pF
POWER SUPPLY
Operating VDD Range
2.7
5
5.5
V
Specified VDD Range
3
5
V
Current
VDD = 5
1.1
2.0
mA
Power dissipation
5
mW
Operating temperature
–40
+125
°C
Storage temperature
–65
+150
°C
(1)
The remote temperature sensor is optimized for the Pentium M™ thermal diode with diode ideality n = 1.0022, and TA = 0°C to +100°C.
Copyright © 2006–2007, Texas Instruments Incorporated
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