Harman Kardon FL 8380, Service Manual

Page: 48 / 72

AN8814SB
■
Electrical Characteristics at T
a
=
25
°
C (continued)
Parameter Symbol Conditions Min Typ Max Unit
Thermal protection circuit
Operating temperature T
THD

180
 °
C
equilibrium value
Operating temperature
∆
T
THD

45
 °
C
hysteresis width
•
Design reference data
Note) The characteristics listed below are theoretical values based on the IC design and are not guaranteed.
■
Usage Notes
1. Avoid the short-circuits between output and V
CC
, and between output pin and GND.
Otherwise, the IC is likely to break down or emit smoke.
2. An appropriate prior study should be done for use of dip soldering.
■
Application Notes
•
P
D

T
a
curves of HSOP042-P-0400
P
D

T
a
0.000
0 25 50 75 100 125 150
2.500
1.500
1.000
2.240
2.000
1.042
0.500
Ambient temperature T
a
(
°
C)
Po
wer dissipation
P
D
(W)
Mounted on standard board
(glass epoxy:
75 mm
×
75 mm
×
t1.6 mm)
R
th(j-a)
=
55.8
°
C/W
Independent IC
without a heat sink
R
th(j-a)
=
119.9
°
C/W
FL8380
48