W83391TS Datasheet, PDF (5/9 Pages) Winbond – DC Fan Pre-Driver

W83391TS/TG
3. APPLICATION CIRCUIT
• W83391TS/TG
FROM FAN1_OUT
FROM FAN2_OUT
VCC12
C4 0.1U
C3
0.1U
C6
0.1U
U1
1 _{FAN1_IN}
FAN1_DRV
14
2
FAN2_IN
13
FAN1_SEN
3 _VCC12
FAN2_DRV
12
4
C1
11
FAN2_SEN
5 _C2
FAN3_DRV
10
6 _{CHRPMP FAN3_SEN} 9
7 _GND
FAN3_IN
8
W83391TS
FROM FAN3_OUT
VCC12
C1
10n
Q1
2
N DGS
R1 10K
R2
6.49K
VCC12
2
C5
10n
Q2
N DGS
R3 10K
R4
6.49K
VCC12
2
C8
10n
R5 10K
R6
6.49K
Q3
N DGS
C2
470u
TO FAN1
C7
470u
TO FAN2
C9
470u
TO FAN3
4. INTERNAL BLOCK DIAGRAM
- W83391TS/TG
FAN1_IN
FAN2_IN
FAN3_IN
C1 C2 Chrpmp
Charge Pump
24V
+
_
24V
+
_
24V
+
_
-2-
FAN1_DRV
FAN1_SEN
FAN2_DRV
FAN2_SEN
FAN3_DRV
FAN3_SEN