AN8480NSB Datasheet, PDF (1/6 Pages) Panasonic Semiconductor – 3-phase full-wave motor driver IC

ICs for Compact Disc/CD-ROM Player
AN8480NSB
3-phase full-wave motor driver IC
s Overview
The AN8480NSB is a 3-phase full-wave motor
driver IC with a reverse rotation brake/short brake
changeover function, incorporating a thermal pro-
tection circuit with its protection monitor pin.
s Features
• 3-phase full-wave and snubberless
• FG output
• Current limit
• Reverse rotation prevention
• Thermal protection circuit built-in (with thermal
protection monitor pin)
s Applications
• Various types of optical disk drive
18.4±0.2
(5.15)
(4.8)
28
22
21
15
1
7
8
14
(1.2)
(6.4)
0.8
0.35
+0.10
–0.05
Seating plane
HSOP042-P-0400
s Block Diagram
Unit: mm
(1.315)
0° to 10°
0.65±0.20
2
H1+
3
H1−
5
H2+
H2− ⁶
H3+ ⁸
H3− ⁹
7
VH
Hall
amp.
matrix
Direction
changeover
Detection
Hall
bias
Direction
detection
ER
Logic
EP = ER × ΕΑ
Upper side
distribution Amp.
Lower side _Amp.
distribution
EC ¹⁸
ECR ¹⁷
EA
Absolute
value
Start/stop
VTL
Thermal
protection
circuit
Brake
circuit
21
VM
22
CS1
28
A1
27
A2
26
A3
1
PG
FG
comparator
12
FG
1