AN8473SA Datasheet, PDF (1/6 Pages) Panasonic Semiconductor – Spindle motor driver IC for optical disk

ICs for Compact Disc/CD-ROM Player
AN8473SA
Spindle motor driver IC for optical disk
s Overview
The AN8473SA is an optical disk driver IC,
featuring direct PWM drive, DMOS power drive,
low ON resistance of output power MOS and 120°
of duty-factor.
11.0±0.3
32
17
s Features
• R_ON = 0.5 Ω (for both upper and lower)
• 5 V single power source
• Circuit current 7 mA (including step-up circuit
current)
s Applications
• Optical disk
s Block Diagram
1
16
(0.625)
0.65
0.3
+0.10
–0.05
Seating plane
SSOP032-P-0300
Unit: mm
0.2^{+–00..0150}
(0.5)
Start ^{11 Start/}
stop
FG ¹⁰
H1H ⁷
H1L ⁶
H2H ⁵
H2L ⁴
H3H ³
H3L ²
VH ¹
EC ⁸
ECR ⁹
Hall amp.
matrix
Hall
bias
PWMSW
30
PWM
frequency
changeover
circuit
Step-up
voltage
circuit
OSC
Thermal
protection
Amp.
Distributor
circuit
PWMOUTU
Amp.
Output
circuit
PWMOUTL
FF
Absolute
value
V_T
SSET
SRESET
×5
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
15
GND
1