n Overview
The AN8267S is an IC to drive the brushless DC fan motors
for internally cooling or blowing the air to the office automa-
tion equipments and measuring equipmennts.
n Features
• Operating supply voltage range ; V
CC
=9.6 to 27.6V
(Operable at V
CC
=6V to 9.6V as well)
• 2-phase half-wave drive, built-in power transistor
• Built-in lock protective function and automatic reset function
• Built-in thermal protective circuit(operating temperature:
150˚C typ.)
• Built-in rotation display function
n Application
For drive of brush-less DC fan motor
AN8267S
Fan Motor Driver
0.1
–
0.1
(0.4)
0.9
–
0.25
2.05
–
0.2
0.9
–
0.25
0.2
+ 0.1 – 0.05
(0.4)
0.4
–
0.25
1.27
2
3
4
5
6
7
8
1
16
15
14
13
12
11
10
9
Unit : mm
7.6– 0.3
5.5– 0.3
1.16-pin PANAFLAT Plastic Package (SOP016-P-0300)
10.09
–
0.3
13 2 3 7 9
8
11
106412
14
1
16
5
Hall Bias
TSD
Revolution
Display
CTRL
Lock Protect
Automatic Reset
+
–
Hall
Amp.
PGND
VM
C
GND RD1 RD2 B1 B2
OUT2OUT1
TSD
VS
VCC
IN (+)
IN (–)
n Block Diagram