Instruction Manual

159
Regulator ICs BA3932
(5) Reference voltage
Because output voltage is dependent on the input refer-
ence voltage, unstable input results in output wavering
and degradation of ripple rejection. Take care when set-
ting the reference voltage power supply. Note that the
AUDIO output, which has a built-in reference voltage
system, is not affected by the external reference voltage.
(6) Thermal protection circuit
A built-in thermal protection circuit prevents thermal
damage to the IC. All outputs are switched OFF when the
circuit operates, and revert to the original state when
temperature drops to a certain level.
(7) Grounding
Each ground line in the application circuit must be ade-
quately short regarding the PREGND (pin 3) and GND
(pin 12) pins. Make sure to arrange the ground lines, the
AUDIO system, and other outputs in a pattern that pre-
vents electric interference.
Thermal derating curve
External dimensions (Units: mm)