TC648B Microchip Technology Inc., TC648B Datasheet - Page 5

• Manufacturer Part Number: TC648B
• Description: Pwm Fan Speed Controllers With Auto-shutdown, Fan Restart And Fansense Technology For Fault Detection
• Manufacturer: Microchip Technology Inc.

TIMING SPECIFICATIONS
FIGURE 1-1:
FIGURE 1-2:
FIGURE 1-3:
2003 Microchip Technology Inc.
FAULT / OTF
SENSE
SENSE
FAULT
FAULT
SENSE
V
V
OUT
OUT
V
OUT
33.3 msec (C
TC646B/TC648B/TC649B Start-up Timing.
Fan Fault Occurrence (TC646B and TC649B).
Recovery From Fan Fault (TC646B and TC649B).
t
STARTUP
F
= 1 µF)
Minimum 16 pulses
t
MP
t
MP
TC646B/TC648B/TC649B
t
DIAG
t
MP
(TC646B and TC649B)
DS21755B-page 5