Datasheet
2002-2013 Microchip Technology Inc. DS21755C-page 5
TC646B/TC648B/TC649B
TIMING SPECIFICATIONS
FIGURE 1-1: TC646B/TC648B/TC649B Start-up Timing.
FIGURE 1-2: Fan Fault Occurrence (TC646B and TC649B).
FIGURE 1-3: Recovery From Fan Fault (TC646B and TC649B).
V
OUT
FAULT / OTF
SENSE
t
STARTUP
(TC646B and TC649B)
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