mc78pc50ntr ON Semiconductor, mc78pc50ntr Datasheet - Page 12

• Manufacturer Part Number: mc78pc50ntr
• Description: Low Noise 150 Ma Low Drop Out Ldo Linear Voltage Regulator
• Manufacturer: ON Semiconductor

following points:
• Phase compensation is made for securing stable operation
• Please be sure the V
• Connect the capacitor with a capacitance of 1.0 mF or
When using these circuits, please be sure to observe the
even if the load current varies. For this reason, be sure to
use a capacitor C
and ESR (Equivalent Series Resistance) as described in
the graphs on page 11.
On page 11, the relations between I
wide. When the impedance of these lines is high, there is
a chance to pick up noise or to malfunction.
more between V
GND.
in
OUT
and GND as close as possible to V
with good frequency characteristics
4.0 V
in
and GND lines are sufficiently
IN
CAPACITOR
Figure 46. Measuring Circuit for White Noise: MC78PC30
CERAMIC
CAP.
MEASURING CONDITIONS: (1) FREQUENCY RANGE: 10 Hz TO 1.0 MHz
MEASURING CONDITIONS:
1.0 mF
OUT
+
(Output Current)
V
IN
Figure 47. Typical Application
1
V
IN
APPLICATION HINTS
MC78PC00 Series
http://onsemi.com
MC78PCxx
2
3
in
or
(2) TEMPERATURE: 25°C
GND
CE
12
CE
GND
• Set external components, especially the Output Capacitor,
ESR
V
5
and ESR of Output Capacitor are shown. The conditions
where the white noise level is under 40 mV (Avg.) are
marked by the shaded area in the graph. (note: When
additional ceramic capacitors are connected to the Output
Pin with Output capacitor for phase compensation, there
is a possibility that the operation will be unstable. Because
of this, test these circuits with as same external
components as ones to be used on the PCB).
as close as possible to the circuit, and make the wiring as
short as possible.
OUT
V
OUT
CERAMIC
CAPACITOR
+
CAP.
I
OUT
OUT
S.A.
SPECTRUM
ANALYSER