Rainbow Electronics BA3950A - Manual (Page 6)

204
Regulator ICs BA3950A
F
Application example
F
Operation notes
(1) Operating power supply voltage
When operating within proper ranges of power supply
voltage and ambient temperature, most circuit functions
are guaranteed. Although the rated values of electrical
characteristics cannot be absolutely guaranteed, char-
acteristic values do not change drastically within the
proper ranges.
(2)
Power dissipation (Pd)
Refer to the heat reduction characteristics (Fig. 4) and
the rough estimation of IC power dissipation given on a
separate page. If power dissipation exceeds the allow-
able limit, the functionality of IC will be degraded (such
as reduction of current capacity by increased chip tem-
perature). Make sure to use the IC within the allowable
range of power dissipation with a sufficient margin.
(3) Preventing oscillation at each output
To stop oscillation of output, make sure to connect a ca-
pacitor having a valve 1
µ
F or greater between GND and
each output pin. Also, be sure to connect a bypass ca-
pacitor between V
CC
and GND for further stabilization of
output. (To avoid the noise effect, layout the grounding
close to the IC.) Oscillation can occur if capacitance is
susceptible to temperature. We recommend using a tan-
talum electrolytic capacitor with minimal changes in ca-
pacitance.