n Overview
The AN8261 is a 3-phase full-wave brushless motor drive IC
and optimum for driving the air conditioner fan motors, etc.
n Features
• Operating supply voltage range : V
CC
= 4.5 to 7V
• 3-phase full-wave drive, external power transistor
• Built-in low-voltage protective circuit
• Built-in thermal protective comparator circuit
• Built-in Hall amplifiers with hysteresis
n Applications
Driving the brushless motors such as air conditioner fan
motors, etc.
AN8261
Brushless Motor Driver
1
2
3
4
5
6
7
8
9
18
17
16
15
14
13
12
11
10
3.8– 0.25 (3.45)
1.2
–
0.25
0.5
–
0.1
2.54
Unit : mm
6.3– 0.25
21.7
–
0.3
3 ~15˚
0.3
+0.1
– 0.25
7.62– 0.25
18-pin DIL Plastic Package (DIP018-P-0300D)
0.51min.
1
VCC
18
7
12
8
11
9
10
2 3
17
16
Hysteresis Amp.A
15
14
Hysteresis Amp.B
Signal Processing
Hysteresis Amp.C
TSD Hysteresis Control
13
4GND
VREF
6 5
VCC Monitor
Protector
n Block Diagram