AN8783SB Datasheet, PDF (6/7 Pages) Panasonic Semiconductor – 4-channel linear driver IC for CD/CD-ROM drive

AN8783SB
s Application Notes
• P_D  T_a curves of HSOP042-P-0400
2.500
2.240
2.000
1.500
ICs for Compact Disc/CD-ROM Player
P_D  T_a
Mounted on standard board
(glass epoxy:
75 mm × 75 mm × t1.6 mm)
Rth(j-a) = 55.8°C/W
1.042
1.000
0.500
Independent IC
without a heat sink
Rth(j-a) = 119.9°C/W
0.000
0
25
50
75
100 125
150
Ambient temperature T_a (°C)
s Application Circuit Example
RL1
RL2
V1
SVCC
RAS _{VIN2 R1}
VREF
VCC1
RC1 R3 R4
C1
V3 V4
RS3 RS4
RC2
C2
VCC2
RL4
RL3
When the AN8783SB is use, take into account the following cautions and follow the power dissipation characteristic curve.
1. Load current I_P1 flowing into load RL1 is supplied through pin 21.
I_P1 = | V₂₀ −V₁₈ | /R_L1
2. Load current I_P2 flowing into load RL2 is supplied through pin 16.
I_P2 = | V₁₇ −V₁₅ | /R_L2
3. Load current I_P3 flowing into load RL3 is supplied through pin 13 via the resistor RS3.
I_P3 = | V₁₄ −V₁₂ | /R_L3
4. Load current I_P4 flowing into load RL4 is supplied through pin 8 via the resistor RS4.
I_P4 = | V₁₀ −V₉ | /R_L4
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