Microchip Technology DM183037 Data Sheet
2012 Microchip Technology Inc.
DS30575A-page 33
PIC18F97J94 FAMILY
2.4
Core Voltage Regulator
(V
(V
CAP
/V
DDCORE
)
A low-ESR (< 5Ω) capacitor is required on the V
CAP
pin
to stabilize the output voltage of the on-chip voltage
regulator. The V
regulator. The V
CAP
pin must not be connected to V
DD
and must use a capacitor of 10 μF connected to
ground. The type can be ceramic or tantalum. Suitable
examples of capacitors are shown in
ground. The type can be ceramic or tantalum. Suitable
examples of capacitors are shown in
Capacitors with equivalent specification can be used.
Designers may use
Designers may use
to evaluate ESR
equivalence of candidate devices.
It is recommended that the trace length not exceed
0.25 inch (6 mm). Refer to
It is recommended that the trace length not exceed
0.25 inch (6 mm). Refer to
for additional information.
FIGURE 2-3:
FREQUENCY vs. ESR
PERFORMANCE FOR
SUGGESTED V
PERFORMANCE FOR
SUGGESTED V
CAP
.
10
1
0.1
0.01
0.001
0.01
0.1
1
10
100
1000 10,000
Frequency (MHz)
ESR (
)
Note:
Typical data measurement at 25°C, 0V DC bias.
TABLE 2-1:
SUITABLE CAPACITOR EQUIVALENTS
Make
Part #
Nominal
Capacitance
Base Tolerance Rated Voltage Temp. Range
TDK
C3216X7R1C106K
10 µF
±10%
16V
-55 to 125ºC
TDK
C3216X5R1C106K
10 µF
±10%
16V
-55 to 85ºC
Panasonic
ECJ-3YX1C106K
10 µF
±10%
16V
-55 to 125ºC
Panasonic
ECJ-4YB1C106K
10 µF
±10%
16V
-55 to 85ºC
Murata
GRM32DR71C106KA01L
10 µF
±10%
16V
-55 to 125ºC
Murata
GRM31CR61C106KC31L
10 µF
±10%
16V
-55 to 85ºC