EMC2103 Standard Microsystems Corporation, EMC2103 Datasheet - Page 14

• Manufacturer Part Number: EMC2103
• Description: Rpm-based Fan Controller with HW Thermal Shutdown
• Manufacturer: Standard Microsystems Corporation

Revision 0.85 (01-29-08)
3.1
CHARACTERISTIC
Diode decoupling
Voltage Accuracy
PWM Duty Cycle
Resistance Error
PWM Resolution
First Conversion
Supply Voltage
Supply Current
SMBus Delay
Temperature
Temperature
Temperature
Temperature
Resolution
Resolution
Corrected
Accuracy
Accuracy
capacitor
Ready
VDD = 3V to 3.6V, T
Electrical Specifications
SYMBOL
R
t
C
t
CONV_T
DUTY
SMB_D
PWM
V
SERIES
FILTER
T
V
I
TRIP
DD
A
DIE
DD
= -40°C to 125°C, all Typical values at T
Table 3.2 Electrical Specifications
MIN
External Temperature Monitors
3
0
Internal Temperature Monitor
TRIP_SET Measurement
DATASHEET
PWM Fan Driver
0.125
0.125
2200
DC Power
±0.5
TYP
450
300
100
256
3.3
1.3
0.5
10
±1
±1
1
14
MAX
2700
750
100
3.6
1.8
1.5
±1
±2
±2
1
RPM-Based Fan Controller with HW Thermal Shutdown
Steps
UNIT
A
Ohm
mA
mA
ms
ms
uA
°C
°C
°C
pF
°C
°C
%
%
V
= 27°C unless otherwise noted.
4 Conversions / second, Fan
Driver active at maximum PWM
frequency, Dynamic Averaging
Enabled (EMC2103-2)
4 Conversions / second, Fan
Driver active at maximum PWM
frequency, Dynamic Averaging
Enabled (EMC2103-1)
1 Conversions / second, Fan
Driver not active, Dynamic
Averaging Disabled
Time after power up before all
channels updated
Time before SMBus
communications should be sent
by host
60°C < T
30°C < T
-40°C < T
Connected across external
diode, CPU, GPU, or AMD diode
Sum of series resistance in both
DP and DN lines
A
CONDITIONS
DIODE
DIODE
< 100°C
< 125°C
< 125°C
SMSC EMC2103
Datasheet