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PDF FAN8902 Data sheet ( Hoja de datos )
| Número de pieza | FAN8902 | |
| Descripción | DC FAN Motor Controller | |
| Fabricantes | Fairchild Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de FAN8902 (archivo pdf) en la parte inferior de esta página. Total 14 Páginas | ||
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FAN8902(KA3902)
DC FAN Motor Controller
www.fairchildsemi.com
Features
• Built-in PWM Current Control Circuit
• Built-in 5V Regulator
• Low Supply Current
• Stalled Motor Current Limitation
• Built-in Over Voltage Protection (OVP)
• Built-in Over Current Protection (OCP)
• Built-in Load Dump Protection
• Built-in Thermal Shutdown (TSD) Circuit
• Built-in Under Voltage Lockout (UVLO) Circuit
Description
The FAN8902 is a monolithic integrated circuit, designed
for the PWM control of a DC fan motor current in an
automotive systems. It allows the fan motor speed to be
controlled linearly and efficiently.
14-DIP-300
Typical Application
• DC for Motor Control for Automotive
Ordering Information
Device Package Operating Temperature
FAN8902 14-DIP-300
-40°C ~ +90°C
©2002 Fairchild Semiconductor Corporation
Rev. 1.0.3
1 page  
FAN8902(KA3902)
Electrical Characteristics
(Unless otherwise, Ta=25°C, VCC=5V, VM=12V)
Parameter
REFERENCE
Reference Voltage
Line Regulation
Load Regulation
UNDER VOLTAGE LOCKOUT (UVLO)
Start Threshold Voltage
Threshold Hysteresis
PROTECTION
Over Voltage
OSCILLATOR (RT=75kΩ, CT=1nF)
Frequency
Duty Cycle
CURRENT SENSING INPUT
Threshold Voltage
OUTPUT DRIVER
Output Voltage Switching Limit
Low Output Voltage
High Output Voltage
Rising Time
Falling Time
TOTAL STANDBY CURRENT
Start-up Current
Operating Supply Current
Symbol
Conditions
Vref
∆Vref1
∆Vref2
Iref=1mA
VCC=9V ~ 32V
Iref=1mA ~ 10mA
VTH(ST)
VHYS
-
-
OVP
-
fosc
Duty
-
-
VTH(ST) VCMD = 5V
VOLIM
VOL1
VOL2
VOH1
VOH2
Tr
Tf
VCC = 18V, Cld =1nF
Iout = 20mA
Iout = 200mA
Iout = -20mA
Iout = -200mA
Cld = 1nF
Cld = 1nF
IST VCC = 7V
ICC VCC = 9V
Min. Typ. Max. Unit
4.75 5.0 5.25 V
- 50 150 mV
- 10 50 mV
7.5 8.0 8.5
1.0 1.2 1.4
V
V
33 36
-
V
20 25 30 kHz
90 95 - %
0.19 0.20 0.21 V
- 15 -
- - 0.4
- - 2.2
10.0 -
-
9.0 -
-
- 100 200
- 100 200
V
V
V
V
V
ns
ns
- 1.0 1.5 mA
- 6.0 8.0 mA
5
5 Page 
FAN8902(KA3902)
Test Circuit
VCC
IN 6
Iout
SW 2
TP 4
CO +
47µF
A
14
La
Cid
1µF
13
VCC
12
OUT
11
PG
IN 5 IN 4
10 9
CS CL
8
NC
FAN8902
CMD
CMDa
CMDb
SG
RT / CT
VREF
123
456
R2
10k
R1
10k
CT
1nF
RT
75k
C2
+
22µF
SW 1
IN 1 TP 1 IN 2
TP 2
TP 3
Iout
CH
7
IN 3
11
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet FAN8902.PDF ] | |
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