RPM-Based Fan Controller with HW Thermal Shutdown
Datasheet
Table 3.2 Electrical Specifications (continued)
VDD = 3V to 3.6V, TA = -40°C to 125°C, all Typical values at TA = 27°C unless otherwise noted.
CHARACTERISTIC
SYMBOL
MIN
TYP
MAX
UNIT
CONDITIONS
0.5
2
°C
°C
1% external resistor
5% external resistor
TemperatureDecode
Accuracy
TTRIP
1
RPM Based Fan Controller
Tachometer Range
TACH
480
16000
±5
RPM
%
Tachometer Setting
Accuracy
ΔTACH
±2.5
Digital I/O pins
Input High Voltage
Input Low Voltage
VIH
VIL
2.0
V
V
0.8
VDD -
0.4
8 mA current drive
8 mA current sink
Output High Voltage
Output Low Voltage
VOH
VOL
V
V
0.4
±5
ALERT and SYS_SHDN pins
Device powered or unpowered
TA < 85°C
Leakage Current
ILEAK
uA
3.2
SMBus Electrical Specifications (Client Mode)
Table 3.3 SMBus Electrical Specifications
VDD= 3V to 3.6V, TA = -40°C to 125°C Typical values are at TA = 27°C unless otherwise noted.
CHARACTERISTIC
SYMBOL
MIN
TYP
MAX
UNITS
CONDITIONS
SMBus Interface
±5
Input High/Low Current
Input Capacitance
IIH / IIL
CIN
uA
pF
Device powered or unpowered
TA < 85°C
4
10
SMBus Timing
Clock Frequency
fSMB
tSP
10
400
50
kHz
ns
Spike Suppression
Bus free time Start to
Stop
tBUF
1.3
us
Setup Time: Start
Setup Time: Stop
Data Hold Time
Data Setup Time
tSU:STA
tSU:STP
tHD:DAT
tSU:DAT
0.6
0.6
0.6
0.6
us
us
us
us
6
72
SMSC EMC2103
Revision 0.85 (01-29-08)
DATA1S5HEET
SMSC [ SMSC CORPORATION ]
