TC648 Microchip, TC648 Datasheet - Page 4

• Manufacturer Part Number: TC648
• Description: Fan Speed Controller
• Manufacturer: Microchip

TC648
DC ELECTRICAL SPECIFICATIONS (CONTINUED)
DS21448C-page 4
Electrical Characteristics: Unless otherwise specified, T
Pulse Width Modulator
F
t
Note 1:
STARTUP
OSC
Symbol
Ensured by design, not tested.
PWM Frequency
Start-up Timer
Parameter
Min
26
—
MIN
T
A
T
MAX
32/F
Typ
30
, V
DD
= 3.0V to 5.5V
Max
—
34
Units
Sec
Hz
2002 Microchip Technology Inc.
C
C
F
F
= 1.0 µF
= 1.0 µF
Test Conditions