f75386 Feature Integration Technology Inc., f75386 Datasheet - Page 28

• Manufacturer Part Number: f75386
• Description: Dual ?1o C Accuracy Temperature Sensor Ic With Fan Speed Control
• Manufacturer: Feature Integration Technology Inc.

THERM#/PWM
Example 1:
Example 2:
12
TEMPERATURE MONITOR (CPU THERMAL DIODE)
VCC3V
FAN Circuit for Low PWM Frequency
TEMPERATURE MONITOR (2N3906)
JP2
CON3
3
2
1
R26
Application Circuit
THERDA
THERDC
R27
470
10
Q1
2N3906
C11
0.1U
D2
3300pF
3300pF
+12V
Q4
NPN
C1
C3
D1+
AGND
D1+
AGND
R21
4.7K
R30
27K
ALERT#/TACH
R28
10K
If use THERM# and ALERT#
THERM#/PWM
THERM#/PWM
ALERT#/TACH
R23
VCC3V
330
R4 4.7K
R5 4.7K
R25
10K
-1-
R18
R19
FAN Circuit for High PWM Frequency
Q3
VCC3V
NMOS
D1+
D2+
THERM#/PWM
4.7K
4.7K
Title
Size
Date:
A
C8
47U
+12V
Feature Integration Technology Inc.
Document Number
F75386 Application Circuit
+
Q2
PNP
Tuesday , February 15, 2005
VCC3V
C2
1
2
3
4
0.1u
JP1
CON3
VCC
D1+
D2+
THERM#/PWM
U1
3
2
1
F75386
ALERT#/TACH
D1
SCLK
SDAT
GND
R20
4.7K
8
7
6
5
R22
C10
0.1U
R2
4.7K
Sheet
ALERT#/TACH
AGND
27K
R3
4.7K
1
R24
10K
ALERT#/TACH
of
1
SCLK
SDATA
Rev
0.1
July
V0.27P
, 2007