THMC45_13 Datasheet, PDF (2/15 Pages) Texas Instruments – 5-V AND 3.3-V DC BRUSHLESS FAN MOTOR DRIVER WITH SINGLE WIRE CONTROL

THMC45
5ĆV AND 3.3ĆV DC BRUSHLESS FAN MOTOR DRIVER
WITH SINGLE WIRE CONTROL
SLIS101A − MAY 2001
functional block diagram
VPWR
PWM 8
70 kΩ
Sleep State SLEEP
Detection
Locked Rotor
Detection and
Auto-Restart
OSC
ITACH/RD
Signaling
OSC
+5 V
ITACH
700 µA
OSC
Oscillator
SLEEP
OSC
H-Bridge
Drive
and
Control
+5 V
1 VPWR
C1
1 µF
2 OUTA
3 OUTB
SN
NS
H− 7
Hall
Sensor H+ 6
TACH 5
−
+
Hall
Sensor
Amplifier
Signal
Conditioning
TACH
TACH
4 GND
2
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