AN8816SB Datasheet, PDF (8/8 Pages) Panasonic Semiconductor – 4ch. Linear Driver IC for CD/CD-ROM

AN8816SB
s Cautions for use
ICs for CD/CD-ROM Player
VREF
V4 V3
R4 R3
V2
R2
V1
R1
PVCC1
RL1
RL2
28 27 26 25 24 23 22 Fin 21 20 19 18 17 16 15
AN8816SB
1 2 3 4 5 6 7 Fin 8 9 10 11 12 13 14
SVCC
PVCC2
RL4
RL3
When the AN8816SB is used, take into account the following cautions and follow the power dissipation characteristic curve.
(1) Load current, IP1 flowing in loads RL1 and RL2 is supplied through Pin20.
IP1 =
| V18 –V17 |
RL1
+
| V16 –V15 |
RL2
(2) Load current, IP2 flowing in loads RL3 and RL4 is supplied through Pin9.
IP2 =
| V14 –V13 |
RL3
+
| V12 –V11 |
RL4
(3) Dissipation increase (DPd) inside the IC (power output stage) caused by loads RL1, RL2, RL3, RL4 is as follow.
DPd = (PVCC1 – | V18 –V17 | ) ×
| V18 –V17 |
RL1
+ (PVCC1 – | V16 –V15 | ) ×
| V16 –V15 |
RL2
+ (PVCC2 – | V14 –V13 | ) ×
| V14 –V13 |
RL3
+ (PVCC2 – | V12 –V11 | ) ×
| V12 –V11 |
RL4
(4) Dissipation increase (DPS) inside the IC (signal block supplied from Pinu) caused by loads RL1, RL2, RL3, RL4 is almost as
follows ;
DPS = 3
V1
R1
(2SVCC + | V18 –V17 | )
+
V2
R2
(2SVCC + | V16 –V15 | )
+
V3
R3
(2SVCC + | V14 –V13 | ) +
V4
R4
(2SVCC + | V12 –V11 | )
(5) Dissipation increase during driver running is DPd + DPS.
(6) Inside loss under no load (Pd1) is almost as follows ;
Pd1 = SVCC × I (SVCC) + PVCC1 × I (PVCC1) + PVCC2 × I (PVCC2)
(7) Entire IC inside loss (Pd) is almost as follows ;
Pd = Pd1 + DPd + DPS