AN8725FH Datasheet, PDF (28/36 Pages) Panasonic Semiconductor – Semiconductor laser power control IC

AN8725FH
ICs for Optical Disk Drive
s Terminal Equivalent Circuits (continued)
Pin No.
Symbol
71 PKGND
72
PKV_CC
Pin 72
77
Equivalent circuit

PKV_CC
BIV_CC
73 PKDCP
SGND
AV_CC
Pin 73, 78
74 LDBI
75 XLDBI
76 BIGND
77
BIV_CC
78 BIDCP
79 SGND
80 SGND
Refer to pin 69
Refer to pin 70

Refer to pin 72
Refer to pin 73


s Application Notes
1. P_D  T_a curves of QFP080-P-1212
2.000
1.920
1.800
1.600
1.400
Mounted on standard board
(glass epoxy: 75 mm × 75 mm × t0.8 mm)
Rth(j-a) = 65.1°C/W
1.200
1.000
0.800
0.600
0.400
Independent IC
without a heat shink
R_th(j-a) = 125.0°C/W
0.200
0.000
0
25
50
75
100 125
150
Ambient temperature T_a (°C)
28
SGND
PBGND