Datasheet
Table 23. LFAST PLL electrical characteristics
1
(continued)
Symbol Parameter Conditions
Value
Unit
Min Nominal Max
ΔPER
REF
Input reference clock jitter (peak to peak) Single period, f
RF_REF
= 10 MHz — — 300 ps
Long term, f
RF_REF
= 10 MHz –500 — 500
ΔPER
EYE
Output Eye Jitter (peak to peak)
4
— — — 400 ps
1. The specifications in this table apply to both the interprocessor bus and debug LFAST interfaces.
2. The 480 MHz frequency is achieved with a 10 MHz or 20 MHz reference clock. With a 13 MHz or 26 MHz reference, the
VCO frequency is 468 MHz.
3. The time from the PLL enable bit register write to the start of phase locks is maximum 2 clock cycles of the peripheral
bridge clock that is connected to the PLL on the device.
4. Measured at the transmitter output across a 100 Ohm termination resistor on a device evaluation board. See Figure 11.
3.11 Power management: PMC, POR/LVD, power sequencing
3.11.1 Power management electrical characteristics
The power management module monitors the different power supplies. It also generates
the internal supplies that are required for correct device functionality. The power
management is supplied by the V
DDPMC
supply.
3.11.1.1 LDO mode recommended power transistors
Only specific orderable part numbers of MPC5777C support LDO regulation mode. See
Ordering information for MPC5777C parts that support this regulation mode.
The following NPN transistors are recommended for use with the on-chip LDO voltage
regulator controller: ON Semiconductor™ NJD2873. The collector of the external
transistor is preferably connected to the same voltage supply source as the output stage of
the regulator.
The following table describes the characteristics of the power transistors.
Table 24. Recommended operating characteristics
Symbol Parameter Value Unit
h
FE
DC current gain (Beta) 60-550 —
P
D
Absolute minimum power dissipation 1.60 W
I
CMaxDC
Maximum DC collector current 2.0 A
VCE
SAT
Collector to emitter saturation voltage 300 mV
V
BE
Base to emitter voltage 0.95 V
V
c
Minimum voltage at transistor collector 2.5 V
Electrical characteristics
MPC5777C Microcontroller Data Sheet Data Sheet, Rev. 13, 08/2018.
40 NXP Semiconductors