NXP Semiconductors
PF4210
14-channel power management integrated circuit (PMIC) for audio/video applications
Name
Bit number
R/W
Default Description
SWBST1STBYMODE 6:5
R/W
0x02
Set the switching mode in standby
• 00 = OFF
• 01 = PFM
• 10 = Auto (default)[1]
• 11 = APS
UNUSED
7
—
0x00
unused
[1] In auto mode, the controller automatically switches between PFM and APS modes, depending on the load current. The SWBST regulator starts up by
default in the auto mode if SWBST is part of the startup sequence.
10.4.5.2 SWBST external components
Table 87.ꢀSWBST external component requirements
Components
Description
Values
[1]
CINBST
SWBST input capacitor
SWBST decoupling input capacitor
SWBST output capacitor
SWBST inductor
10 µF
[1]
CINBSTHF
0.1 µF
[1]
COBST
2 x 22 µF
2.2 µH
LSBST
DBST
SWBST boost diode
1.0 A, 20 V Schottky
[1] Use X5R or X7R capacitors.
10.4.5.3 SWBST specifications
Table 88.ꢀSWBST Electrical Specifications
All parameters are specified at TMIN to TMAX (see Table 4), VIN = VINSWBST = 3.6 V, VSWBST = 5.0 V, ISWBST = 100 mA,
typical external component values, fSWBST = 2.0 MHz, otherwise noted. Typical values are characterized at VIN = VINSWBST
= 3.6 V, VSWBST = 5.0 V, ISWBST = 100 mA, and 25 °C, unless otherwise noted.
Symbol
Parameters
Min
Typ
Max
Units
Switch mode supply SWBST
VINSWBST
VSWBST
Input voltage range
2.8
—
—
4.5
—
V
V
Nominal output voltage
Table 86
VSWBSTACC
Output voltage accuracy
2.8 V ≤ VIN ≤ 4.5 V
%
−4.0
—
—
—
3.0
0 < ISWBST < ISWBSTMAX
ΔVSWBST
Output ripple
mVpk-pk
2.8 V ≤ VIN ≤ 4.5 V
120
0 < ISWBST < ISWBSTMAX, excluding reverse
recovery of Schottky diode
VSWBSTLOR
VSWBSTLIR
ISWBST
DC load regulation
mV/mA
mV
0 < ISWBST < ISWBSTMAX
—
—
0.5
50
—
—
DC line regulation
2.8 V ≤ VIN ≤ 4.5 V, ISWBST = ISWBSTMAX
Continuous load current
2.8 V ≤ VIN ≤ 3.0 V
3.0 V ≤ VIN ≤ 4.5 V
mA
—
—
—
—
500
600
PF4210
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© NXP B.V. 2018. All rights reserved.
Data sheet: technical data
Rev. 2.0 — 14 November 2018
83 / 137
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