TC647B Microchip Technology Inc., TC647B Datasheet - Page 4

• Manufacturer Part Number: TC647B
• Description: Pwm Fan Speed Controllers With Minimum Fan Speed, Fan Restart And Fansense Technology For Fault Detection
• Manufacturer: Microchip Technology Inc.

TC642B/TC647B
ELECTRICAL SPECIFICATIONS (CONTINUED)
TEMPERATURE SPECIFICATIONS
DS21756B-page 4
Electrical Specifications: Unless otherwise specified, all limits are specified for -40°C < T
SENSE Input
SENSE Input Threshold Voltage with
Respect to GND
Blanking time to ignore pulse due to
V
FAULT Output
Output Low Voltage
Missing Pulse Detector Timer
Start-Up Timer
Diagnostic Timer
Note 1:
Electrical Characteristics: Unless otherwise noted, all parameters apply at V
Temperature Ranges:
Specified Temperature Range
Operating Temperature Range
Storage Temperature Range
Thermal Package Resistances:
Thermal Package Resistance, 8-Pin MSOP
Thermal Package Resistance, 8-Pin SOIC
Thermal Package Resistance, 8-Pin PDIP
OUT
turn-on
2:
Ensured by design, tested during characterization.
For V
Parameters
Parameters
DD
< 3.7V, t
STARTUP
and t
V
t
TH(SENSE)
STARTUP
t
MP
BLANK
Sym
t
V
DIAG
t
MP
OL
timers are typically 13/f.
Symbol
T
T
T
JA
JA
JA
A
A
A
Min
50
—
—
—
—
—
Min
-40
-40
-65
—
—
—
Typ
32/f
32/f
3.0
70
3/f
—
Typ
200
155
125
—
—
—
DD
= 3.0V to 5.5V
+125
+150
Max
+85
Max
—
—
—
—
0.3
90
—
—
—
A
< +85°C, V
Units
°C/W
°C/W
°C/W
Units
µsec
°C
°C
°C
mV
sec
sec
sec
V
2003 Microchip Technology Inc.
DD
I
Note 2
Note 2
OL
= 3.0V to 5.5V.
= 2.5 mA
Conditions
Conditions