PIC24FV16KM204 Datasheet, PDF (31/336 Pages) Microchip Technology – General Purpose, 16-Bit Flash Microcontroller with XLP Technology Data Sheet

PIC24FV16KM204 FAMILY
2.4 Voltage Regulator Pin (VCAP)
Note:
This section applies only to
PIC24FV16KM devices with an on-chip
voltage regulator.
Some of the PIC24FV16KM devices have an internal
voltage regulator. These devices have the voltage
regulator output brought out on the VCAP pin. On the
PIC24F K devices with regulators, a low-ESR (< 5Ω)
capacitor is required on the VCAP pin to stabilize the
voltage regulator output. 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 specifications can
be used.
Designers may use Figure 2-3 to evaluate ESR
equivalence of candidate devices.
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 27.0 “Electrical
Characteristics” for additional information.
Refer to Section 27.0 “Electrical Characteristics” for
information on VDD and VDDCORE.
FIGURE 2-3:
10
FREQUENCY vs. ESR
PERFORMANCE FOR
SUGGESTED VCAP
1
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
 2013 Microchip Technology Inc.
Advance Information
DS33030A-page 31