FAN8902 Fairchild Semiconductor, FAN8902 Datasheet - Page 10

• Manufacturer Part Number: FAN8902
• Description: Motor / Motion / Ignition Controllers & Drivers Fan Motor Controller DC
• Manufacturer: Fairchild Semiconductor
• Type: Fan Motor Controllerr

Specifications of FAN8902

• Operating Current: 8mA
• Operating Temperature Classification: Industrial
• Package Type: PDIP
• Operating Supply Voltage (typ): 12V
• Product: Fan / Motor Controllers / Drivers
• Operating Supply Voltage: 32 V
• Supply Current: 8 mA
• Mounting Style: Through Hole
• Package / Case: DIP-14
• Operating Temperature: - 40 C to + 90 C
• Lead Free Status / RoHS Status: Compliant

8. Operational Mode Selection
The FAN8902 has three operation modes as follows:
The voltage, V
9. Over Voltage Protector (Ovp)
If the voltage, V
the motor is stopped. Then if the voltage, V
10. Totem-pole Output
The FAN8902 has a single totem-pole output driver which can be drive current to peak 0.8[A].
- STOP: Turned-off the power MOSFET
- LINEAR: Linearly controlled the power MOSFET
- FULL-ON: Fully turned-on the power MOSFET
- V
- V
SRT (PIN #9)
MAX (PIN #7)
SRT (PIN #9)
BAT
= Vref R7 / (R5 + R6 + R7)
= Vref (R6 + R7) / (R5 + R6 + R7)
36[V], the output (pin #12) is grounded, and the switching device (power MOSFET) is turned-off, and
and V
Normal operation
MAX (PIN #7)
Motor current
current
[A]
Motor
BAT
I
MAX
I
SRT
, in the application circuit are as follows:
STOP
36[V], the switching device is turned-on again, and the motor is operated.
V
SRT
Reduced switch-on time
LINEAR
V
V
CMD
CMD
Stalled state
Uncontrolled without the FAN8902
Controlled with the FAN8902
V
[V]
La
V
MAX
FULL-ON
V
BAT
V
CS
FAN8902(KA3902)
10