EMC2102 Standard Microsystems Corporation, EMC2102 Datasheet - Page 13

• Manufacturer Part Number: EMC2102
• Description: Rpm-based Fan Controller with HW Thermal Shutdown
• Manufacturer: Standard Microsystems Corporation

RPM-Based Fan Controller with HW Thermal Shutdown
Datasheet
SMSC EMC2102
3.3
TACH Range
TACH Setting
Accuracy
Thermal Shutdown
Threshold
Thermal Shutdown
Hysteresis
Output High Voltage
Output Low Voltage
Input High Voltage
Input Low Voltage
Input High/Low Current
Input Capacitance
Output Low Sink Current
Clock Frequency
Spike Suppression
CHARACTERISTIC
CHARACTERISTIC
Note 3.4
Note 3.5
SMBus Electrical Specifications
VDD_3V = 3V to 3.6V, VDD_5V = 4.6V - 5.5V, T
VDD_3V = 3V to 3.6V, VDD_5V = 4.6 to 5.5V, T
T
the device. The internal temperature sensor will return T
Contact SMSC for Application Notes and guidelines when measuring GPU processor
diodes and CPU processor diodes.
SYMBOL
TSD
DIE
TSD
Δ
Δ
TACH
V
V
TACH
TACH
Typical values are at T
all Typical values at T
SYMBOL
OH
OL
HYST
refers to the internal die temperature and may not match T
I
TH
IH /
f
V
C
SMB
Table 3.2 Electrical Specifications (continued)
V
t
SP
IH
IN
IL
Table 3.3 SMBus Electrical Specifications
I
IL
_3V 0.4
VDD
MIN
480
MIN
2.0
SMBus and Digital I/O pins
10
RPM Based Fan Controller
-1
Thermal Shutdown
DATASHEET
SMBus Interface
SMBus Timing
TYP
A
A
5
4
TYP
150
= 27°C unless otherwise noted.
±1
±5
50
= 27°C unless otherwise noted.
13
MAX
400
0.8
50
1
16000
MAX
±7.5
0.5
±2
UNITS
kHz
mA
uA
pF
ns
V
V
UNIT
RPM
A
A
°C
°C
%
%
V
V
= 0°C to 85°C
= 0°C to 85°C
SMDATA = 0.5V
Internal Oscillator
4mA current sink
External oscillator 32.768kHz
40°C < T
2 mA current drive
DIE
.
CONDITIONS
CONDITIONS
DIE
A
due to self heating of
Revision 1.95 (10-19-06)
< 100°C