NXP Semiconductors
PF4210
14-channel power management integrated circuit (PMIC) for audio/video applications
Name
Bit number
R/W
—
Default Description
UNUSED
SW4OMODE
4
5
0x00
0x00
unused
R/W
Set status of SW4 when in sleep mode
• 0 = OFF
• 1 = PFM
UNUSED
7:6
—
0x00
unused
Table 83.ꢀRegister SW4CONF - ADDR 0x4E
Name
Bit number
R/W
Default Description
SW4ILIM
0
R/W
0x00
SW4 current limit level selection
• 0 = High-level current limit
• 1 = Low-level current limit
UNUSED
1
R/W
R/W
R/W
R/W
0x00
0x00
0x00
0x00
unused
SW4FREQ
3:2
5:4
7:6
SW4 switching frequency selector. See Table 36.
SW4 phase clock selection. See Table 34.
SW4 DVS speed selection. See Table 33.
SW4PHASE
SW4DVSSPEED
10.4.4.6.2 SW4 external components
Table 84.ꢀSW4 external component requirements
Components
Description
Values
4.7 µF
[1]
CINSW4
SW4 input capacitor
SW4 decoupling input capacitor
SW4 output capacitor
SW4 inductor
[1]
CIN4HF
0.1 µF
[1]
COSW4
3 x 22 µF
1.0 µH
LSW4
[1] Use X5R or X7R capacitors.
10.4.4.6.3 SW4 specifications
Table 85.ꢀSW4 electrical characteristics
All parameters are specified at TMIN to TMAX (see Table 4), VIN = VINSW4 = 3.6 V, VSW4 = 1.8 V, ISW4 = 100 mA,
SW4_PWRSTG[2:0] = [101], typical external component values, fSW4 = 2.0 MHz, single/dual phase and independent
mode unless, otherwise noted. Typical values are characterized at VIN = VINSW4 = 3.6 V, VSW4 = 1.8 V, ISW4 = 100 mA,
SW4_PWRSTG[2:0] = [101], and 25 °C, unless otherwise noted.
Symbol
Parameter
Min
Typ
Max
Unit
SWITCH MODE SUPPLY SW4
[1]
VINSW4
VSW4
Operating input voltage
2.8
—
4.5
V
V
Nominal output voltage
Normal operation
VTT mode
—
—
Table 77
—
—
VSW3AFB/2
PF4210
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© NXP B.V. 2018. All rights reserved.
Data sheet: technical data
Rev. 2.0 — 14 November 2018
78 / 137
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