2003 Fairchild Semiconductor Corporation
www.fairchildsemi.com
Rev.1.0.2
Features
A wide range of operating voltage: 2.8V to 28V
Locked rotor protection with open collector output and
auto retry
Open collector FG output.
Open collector Alarm output.
TSD protection.
Description
The FAN8461G is a single phase BLDC motor driver and
it's typical application is DC cooling fans with wide range of
supply voltage(3.3/5/12/24V).
Typical Applications
CPU Cooling Fans
Instrumentation Fans
Desktop PC Fans
Ordering Information
Device
Package
Operating Temp.
FAN8461G
10-SSOP
-30C ~ 90C
FAN8461GX
10-SSOP
-30C ~ 90C
FAN8461G
Single Phase Full Wave BLDC Motor Driver
FAN8461G
4
Absolute Maximum Ratings (Ta = 25
C)
note
1 : Should not exceed P
D
or ASO value.
2 :
I
OPEAK time is within 2us.
Recommended Operating Conditions (Ta = 25
C)
Power Dissipation Curve
PCB condition : When mounted on 76.2mm
114mm
1.57mm PCB (glass epoxy material).
Parameter
Symbol
Value
Unit
Maximum power supply voltage
VCC
MAX,
VM
MAX
32
V
Thermal resistance
Rja
150
o
C/W
Maximum power dissipation
P
DMAX
800
mW
Maximum output voltage
V
OMAX
36
V
Maximum output current
I
OMAX
0.8
note
A
Maximum output peak current
I
OPEAK
1.2
note
A
Maximum FG/Alarm output current
I
FG/AL
5
mA
FG/Alarm output sustain voltage
V
FG/AL
36
V
Hall output withstanding voltage
V
HO
36
V
Operating temperature
T
OPR
-30 ~ 90
C
Storage temperature
T
STG
-55 ~ 150
C
Parameter
Symbol
Min.
Typ.
Max.
Unit
Supply voltage
VCC
2.8
-
28
V
0
0
25
50
75
100
125
Ambient temperature, Ta [
C]
150
175
0.5
1.0
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