AN8473SA Datasheet, PDF (6/6 Pages) Panasonic Semiconductor – Spindle motor driver IC for optical disk

AN8473SA
s Application Circuit Example
ICs for Compact Disc/CD-ROM Player
( Check the stipulated value of electrical characteristics
and then determine resistance value.)
0.1 µF
0.1 µF
5V
100 µF
100 Ω
Start ¹¹
2 200 pF 10
FG
Start/
stop
H1H 7
H1L 6
H2H 5
H2L 4
H3H 3
H3L 2
VH 1
100Ω
Spindle speed ^{EC 8}
control signal _ECR ⁹
Hall amp.
matrix
Hall
bias
PWMSW ³⁰
PWM
frequency
changeover
High: 40 kHz
circuit
Low: 80 kHz
Step-up
voltage
circuit
OSC
Thermal
protection
Amp.
Distributor
circuit
PWMOUTU
Amp.
Output
circuit
PWMOUTL
FF
Absolute
value
V_T
SSET
SRESET
X5
V_C1
17 VM21
18 VM22
32 VM11
31 VM12
27 A11
28 A12
24 A21
25 A22
21 A31
22 A32
23 PG2
26 PG1
19 CS
R_CS = 0.33 Ω
15 GND
6