HT817D0
Push-pull output
To prevent the speaker and driver transistor from damage due to excess power dissipation which re-
sults from a high voltage power supply (4.5V~5.5V), the following push-pull output stage is recom-
mended.
V DD
SW
100W ~
R OSC 330W
100W ~
330W
O SC2
KEY1
O S C 1 FLA G 1 FLA G 2 V D D
H T817D 0
AUD
K E Y 12
VSS
8050
47mF
8550
430W
Coupling to power amplifier
V DD
100W ~
330W
R O SC
100W ~
330W
O SC2
KEY1
O S C 1 FLA G 1 FLA G 2 V D D
H T817D 0
AUD
K E Y 12
VSS
0 .1 m F
560W
10kW
To
pow er
am p
14
March 15, 2000