AMC6821SDBQG4 Datasheet, PDF (3/56 Pages) Texas Instruments – Intelligent Temperature Monitor and PWM Fan Controller

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