f75363 Feature Integration Technology Inc., f75363 Datasheet - Page 25

• Manufacturer Part Number: f75363
• Description: ?1o C Accuracy Temperature Sensor Ic With Fan Speed Control
• Manufacturer: Feature Integration Technology Inc.

10 Application Circuit
PWM/THERM#
Example 1:
Example 2:
TEMPERATURE MONITOR (CPU THERMAL DIODE)
VCC3V
FAN Circuit for Low PWM Frequency
TEMPERATURE MONITOR (2N3906)
JP2
CON3
3
2
1
R26
THERDA
THERDC
R27
470
10
Q1
2N3906
C11
0.1U
D2
3300pF
3300pF
+12V
Q4
NPN
C1
C3
D+
D-
D+
D-
R21
4.7K
R30
27K
ALERT#/TACH
R28
10K
If use THERM# and ALERT#
PWM/THERM#
PWM/THERM#
ALERT#/TACH
R23
VCC3V
330
R4 4.7K
R5 4.7K
R25
10K
R18
R19
FAN Circuit for High PWM Frequency
Q3
VCC3V
NMOS
-1-
D+
D-
PWM/THERM#
4.7K
4.7K
Title
Size
Date:
A
C8
47U
+12V
Feature Integration Technology Inc.
Document Number
F75363 Application Circuit
+
Q2
PNP
Wednesday , January 26, 2005
VCC3V
C2
1
2
3
4
0.1u
JP1
CON3
VCC
D+
D-
PWM/THERM#
U1
3
2
1
F75363
ALERT#/TACH
D1
SCLK
SDAT
GND
8
7
6
5
R20
4.7K
R22
C10
0.1U
R2
4.7K
Sheet
ALERT#/TACH
27K
R3
4.7K
1
R24
10K
ALERT#/TACH
of
1
SCLK
SDATA
Rev
0.1
July, 2007
V0.27P