PIC24FJ128GC010 Datasheet, PDF (35/472 Pages) Microchip Technology – 16-Bit Flash Microcontrollers with 12-Bit Pipeline A/D, Sigma-Delta A/D, USB On-The-Go and XLP Technology

PIC24FJ128GC010 FAMILY
2.4 Voltage Regulator Pin (VCAP)
A low-ESR (< 5Ω) capacitor is required on the VCAP pin
to stabilize the output voltage of the on-chip voltage
regulator. The VCAP pin must not be connected to VDD
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 Table 2-1. Capacitors with
equivalent specification can be used.
The placement of this capacitor should be close to VCAP.
It is recommended that the trace length not exceed
0.25 inch (6 mm). Refer to Section 37.0 “Electrical
Characteristics” for additional information.
Designers may use Figure 2-3 to evaluate ESR
equivalence of candidate devices.
Refer to Section 34.2 “On-Chip Voltage Regulator”
for details on connecting and using the on-chip
regulator.
FIGURE 2-3:
10
1
FREQUENCY vs. ESR
PERFORMANCE FOR
SUGGESTED VCAP
0.1
0.01
0.001
0.01
0.1
1
10
100
Frequency (MHz)
1000 10,000
Note:
Typical data measurement at 25°C, 0V DC bias.
TABLE 2-1:
Make
TDK
TDK
Panasonic
Panasonic
Murata
Murata
.
SUITABLE CAPACITOR EQUIVALENTS
Part #
Nominal
Capacitance
Base Tolerance Rated Voltage Temp. Range
C3216X7R1C106K
C3216X5R1C106K
ECJ-3YX1C106K
ECJ-4YB1C106K
GRM32DR71C106KA01L
GRM31CR61C106KC31L
10 µF
10 µF
10 µF
10 µF
10 µF
10 µF
±10%
±10%
±10%
±10%
±10%
±10%
16V
-55 to +125ºC
16V
-55 to +85ºC
16V
-55 to +125ºC
16V
-55 to +85ºC
16V
-55 to +125ºC
16V
-55 to +85ºC
 2012-2013 Microchip Technology Inc.
DS30009312B-page 35