LA42352
Features of IC Inside and Usage Note
Standby function
• Pin 5 is the standby switch pin. The amplifier is turned on by applying approximately 3V or more to this pin through an
external resistor (R3).
• If voltage in excess of 10V is to be applied to the standby switch, calculate the value of R3 using the following formula
so that the current flowing into pin 5 is 500µA or less:
(Applied voltage − 2V
500µA
(≈1.4V))
BE
R3 =
− 15kΩ
Protector
• In order to prevent damage or degradation which may be caused by abnormally heated IC, the LA42352 has a thermal
shutdown protector. Accordingly, if the IC junction temperature (Tj) climbs to around 160°C due to inadequate heat
dissipation, the thermal shutdown protector will operate to control the output gradually into attenuation.
No.A0078-6/9
SANYO [ SANYO SEMICON DEVICE ]
