Datasheet

 2002-2013 Microchip Technology Inc. DS21756C-page 5
TC642B/TC647B
TIMING SPECIFICATIONS
FIGURE 1-1: TC642B/TC647B Start-Up Timing.
FIGURE 1-2: Fan Fault Occurrence.
FIGURE 1-3: Recovery From Fan Fault.
V
OUT
FAULT
SENSE
t
STARTUP
V
OUT
FAULT
SENSE
33.3 msec (C
F
= 1 µF)
t
MP
t
MP
t
DIAG
V
OUT
FAULT
SENSE
Minimum 16 pulses
t
MP