AN8472SA Datasheet, PDF (9/9 Pages) Panasonic Semiconductor – Spindle motor driver IC for optical disk

ICs for Compact Disc/CD-ROM Player
s Application Circuit Example
(Connect this capacitor,
if necessary,
after checking operation.)
AN8472SA
5V
Step-up voltage circuit
100 Ω
START ¹¹
2 200 pF ₁₀
FG
H1H 7
H1L 6
H2H 5
H2L ⁴
H3H 3
H3L 2
Start/stop
Hall amp.
matrix
VH 1
Hall
100Ω
bias
Spindle speed ^{EC 8}
V_T
control signal _{ECR 9}
OSC
Thermal
protection
19 VM2
27 A11
28 A12
Distributor
circuit
Amp.
Amp.
Output
circuit
24 A21
25 A22
21 A31
22 A32
PWMOUT
FF
SRESET
RNFOUT
×5
23 RNF2
26 RNF1
17 GND
R_CS = 0.33 Ω
FC 32 _{Oscillator SSET}
V_C1
560 pF
9