TC646 Microchip, TC646 Datasheet - Page 2

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TC646

Manufacturer Part Number
TC646
Description
PWM Fan Speed Controller
Manufacturer
Microchip
Datasheet

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TC646
Functional Block Diagram
DS21446C-page 2
GND
V
V
C
AS
IN
F
V
SHDN
+
+
+
Generator
TC646
Clock
V
OTF
70mV (typ.)
SHDN
PWM
+
+
3 x T
Start-up
Missing
Detect.
Control
Timer
Pulse
Timer
Logic
PWM
OTF
10k
FAULT
2002 Microchip Technology Inc.
SENSE
V
V
DD
OUT

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