TC664_36 Datasheet, PDF (4/36 Pages) Microchip Technology – SMBus™ PWM Fan Speed Controllers With Fan Fault Detection

TC664/TC665
TEMPERATURE SPECIFICATIONS
Electrical Characteristics: Unless otherwise noted, all parameters apply at V_DD = 3.0 V to 5.5 V
Parameters
Symbol Min Typ Max Units
Conditions
Temperature Ranges:
Specified Temperature Range
Operating Temperature Range
Storage Temperature Range
Thermal Package Resistances:
Thermal Resistance, 10 Pin MSOP
T_A
-40
—
+85
°C
T_A
-40
— +125
°C
T_A
-65
— +150
°C
_JA
—
113
—
°C/W
TIMING SPECIFICATIONS
Electrical Characteristics: Unless otherwise noted, all limits are specified for V_DD = 3.0 V to 5.5 V,
-40°C <T_A < +85°C
Parameters
Sym
Min
Typ Max Units
Conditions
SMBus Interface (See Figure 1-1)
Serial Port Frequency
Low Clock Period
High Clock Period
SCLK and SDA Rise Time
SCLK and SDA Fall Time
Start Condition Setup Time
SCLK Clock Period Time
Start Condition Hold Time
Data in SetupTime to SCLK
High
f_SC
0
t_LOW
4.7
t_HIGH
4.7
t_R
—
t_F
—
t_SU(START)
4.7
t_SC
10
t_H(START)
4.0
t_SU-DATA
250
— 100 kHz Note 1
—
— µsec Note 1
—
— µsec Note 1
— 1000 nsec Note 1
— 300 nsec Note 1
—
— µsec Note 1
—
— µsec Note 1
—
— µsec Note 1
—
— nsec Note 1
Data in Hold Time after SCLK
t_H-DATA
300
Low
—
— nsec Note 1
Stop Condition Setup Time
t_SU(STOP)
4.0
Bus Free Time Prior to New
t_IDLE
4.7
Transition
—
— µsec Note 1
—
µsec Note 1 and Note 2
Note 1: Not production tested, ensured by design, tested during characterization.
2: Time the bus must be free before a new transmission can start.
DS21737B-page 4
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