TC646B View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

TC646B

PWM Fan Speed Controllers With Auto-Shutdown, Fan Restart and FanSense™ Technology for Fault Detection

Microchip Technology 

TIMING SPECIFICATIONS

tSTARTUP

VOUT

TC646B/TC648B/TC649B

FAULT / OTF

SENSE

FIGURE 1-1:

TC646B/TC648B/TC649B Start-up Timing.

VOUT

33.3 msec (CF = 1 µF)

tMP

tDIAG

tMP

(TC646B and TC649B)

FAULT

SENSE

FIGURE 1-2:

Fan Fault Occurrence (TC646B and TC649B).

tMP

VOUT

FAULT

SENSE

FIGURE 1-3:

Minimum 16 pulses

Recovery From Fan Fault (TC646B and TC649B).

 2003 Microchip Technology Inc.

DS21755B-page 5

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