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| AN8473SA Datasheet, PDF (4/6 Pages) Panasonic Semiconductor – Spindle motor driver IC for optical disk | |||
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AN8473SA
ICs for Compact Disc/CD-ROM Player
s Electrical Characteristics at Ta = 25°C (continued)
Parameter
Symbol
Conditions
PWM oscillation changeover
Input high-level
Input low-level
PWMH VDD = 5 V
PWML VDD = 5 V
Min Typ Max Unit
4.5   V
  0.5 V
⢠Design reference data
Note) The characteristics listed below are theoretical values based on the IC design and are not guaranteed.
Parameter
Symbol
Conditions
Min Typ Max Unit
PWM oscillation changeover
PWM frequency high-level
PWM frequency low-level
Thermal protection
fPWMH
fPWML
VDD = 5 V, PWMSW = Low
VDD = 5 V, PWMSW = High
 80  kHz
 40  kHz
Thermal protection operating
temperature
TSDON VDD = 5 V
 150  °C
Thermal protection hysteresis width âTSD VDD = 5 V
 40  °C
s Usage Notes
⢠Prevent this IC from being line-to-ground fault.
(To be concrete, do not short-circuit any of A31 (pin 21), A32 (pin 22), A21 (pin 24), A22 (pin 25), A11 (pin 27) and
A12 (pin 28) with GND pin (pin 15).)
⢠Be careful of the following three pins because their static breakdown voltages are low. (C = 200 pF, R = 0 â¦)
Pin 23: breakdown at 120 V
Pin 26: breakdown at 120 V
s Application Notes
⢠PD  Ta curves of SSOP032-P-0300
1 400
PD  Ta
1 200
1 032
1 000
800
Mounted on standard board
(glass epoxy: 50 Ã 50 Ã t0.8 mm3)
Rth(j-a) = 96.9°C/ W
PD = 1 032 mW (25°C)
600
534
400
Independent IC
without a heat sink
Rth(j-a) = 187.1°C/ W
200
PD = 534 mW (25°C)
000
0
25
50
75
100 125
150
Ambient temperature Ta (°C)
4
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