emc2105 Standard Microsystems Corp., emc2105 Datasheet - Page 15

• Manufacturer Part Number: emc2105
• Description: Emc2105 Rpm-based High Side Fan Controller With Hardware Thermal Shutdown
• Manufacturer: Standard Microsystems Corp.

RPM-Based High Side Fan Controller with Hardware Thermal Shutdown
Datasheet
SMSC EMC2105
VDD = 3V to 3.6V, VDD_5V = 4.5V to 5.5V, T
Supply Current
Supply Current from
VDD_5V
Temperature
Accuracy
Temperature
Resolution
Diode decoupling
capacitor
Resistance Error
Corrected
Temperature
Accuracy
Temperature
Resolution
Total Unadjusted
Error
Reference Voltage
Reference Accuracy
Output High Voltage
from 5V supply
Voltage Accuracy
Fan Drive Current
Overcurrent Limit
DC Short Circuit
Current Limit
Short circuit delay
CHARACTERISTIC
Δ
SYMBOL
R
I
V
C
V
SOURCE
Δ
I
I
SHORT
I
V
SERIES
FAN_OUT
FILTER
TUE
OH_5V
OVER
T
t
DD_5
I
V
DFS
REF
DD
DIE
REF
Table 3.2 Electrical Specifications (continued)
VDD_5V
- 0.35
MIN
External Temperature Monitors
Internal Temperature Monitor
A
Voltage Measurement
High Side Fan Driver
= -40°C to 85°C, all Typical values at T
DATASHEET
VDD_5
V - 0.3
±0.25
0.125
0.125
2200
TYP
±0.5
500
100
800
700
±1
1
1
2
noted.
15
MAX
2700
2800
750
100
600
±1
±2
±2
1
2
UNIT
Ohm
mV
mA
mA
mA
uA
uA
pF
°C
°C
°C
°C
°C
%
%
%
V
s
1 Conversions / second-
Dynamic Averaging disabled,
Fan Driver disabled.
Fan Driver enabled, No load
current
60°C < T
30°C < T
0°C < T
0°C < T
Connected across external
diode, CPU, GPU, or AMD diode
Sum of series resistance in both
DP and DN lines
Note 3.4
Measured at 3/4 full scale
I
5V
Measured at 3/4 full scale -
Direct Setting Mode
Momentary Current drive at
startup for < 2 seconds
1.5V < FAN_OUT < 3.5V
Sourcing current, Thermal
shutdown not triggered,
FAN_OUT = 0V
SOURCE
A
= 27°C unless otherwise
DIODE
DIE
= 600mA, VDD_5V =
CONDITIONS
DIODE
DIE
Revision 1.74 (05-08-08)
< 115°C
< 85°C
< 125°C,
< 110°C