NXP Semiconductors
PF4210
14-channel power management integrated circuit (PMIC) for audio/video applications
Table 15.ꢀ16 MHz clock specifications
TMIN to TMAX (see Table 4), VIN = 2.8 V to 4.5 V, LICELL = 1.8 V to 3.3 V and typical external
component values. Typical values are characterized at VIN = 3.6 V, LICELL = 3.0 V, and 25 °C,
unless otherwise noted.
Symbol
VIN16MHz
f16MHZ
Parameters
Min
2.8
Typ
—
Max
4.5
Units
V
Operating voltage from VIN
16 MHz clock frequency
2.0 MHz clock frequency
14.7
1.84
16
—
17.2
2.15
MHz
MHz
[1]
f2MHZ
[1] 2.0 MHz clock is derived from the 16 MHz clock.
10.2.1 Clock adjustment
The 16 MHz clock and hence the switching frequency of the regulators, can be adjusted
to improve the noise integrity of the system. By changing the factory trim values of the
16 MHz clock, the user may add an offset as small as ±3.0 % of the nominal frequency.
Contact your NXP representative for detailed information on this feature.
10.3 Bias and references block description
10.3.1 Internal core voltage references
All regulators use the main band gap as the reference. The main band gap is bypassed
with a capacitor at VCOREREF. The band gap and the rest of the core circuitry are
supplied from VCORE.
The performance of the regulator is directly dependent on the performance of the band
gap. No external DC loading is allowed on VCORE, VCOREDIG, or VCOREREF.
VCOREDIG is powered as long as there is a valid supply and/or valid coin cell. Table 16
shows the main characteristics of the core circuitry.
Table 16.ꢀCore voltages electrical specifications
TMIN to TMAX (see Table 4),VIN = 2.8 V to 4.5 V, LICELL = 1.8 V to 3.3 V, and typical external component values. Typical
values are characterized at VIN = 3.6 V, LICELL = 3.0 V, and 25 °C, unless otherwise noted.[1]
Symbol
VCOREDIG (digital core supply)
VCOREDIG Output voltage
Parameters
Min
Typ
Max
Units
[2]
V
ON mode
Coin cell mode and OFF
—
—
1.5
1.3
—
—
VCORE (analog core supply)
VCORE Output voltage
V
ON mode and charging
OFF and coin cell mode
—
—
2.775
0.0
—
—
VCOREREF (band gap / regulator reference)
VCOREREF
Output voltage
—
—
—
1.2
0.5
—
—
—
V
%
%
VCOREREFACC
VCOREREFTACC
Absolute accuracy
Temperature drift
0.25
[1] For information only
PF4210
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© NXP B.V. 2018. All rights reserved.
Data sheet: technical data
Rev. 2.0 — 14 November 2018
22 / 137
NXP [ NXP ]
