NXP Semiconductors
PF4210
14-channel power management integrated circuit (PMIC) for audio/video applications
COIN CELL
VIN < UVDET
VIN < UVDET
VIN > UVDET
PWRON = 0 held ≥ 4.0 sec
any SWxOMODE bits = 1
and PWRONRSTEN = 1
(PWRON_CFG = 1)
Thermal shutdown
OFF
PWRON = 1 and
VIN > UVDET
(PWRON_CFG = 0)
or
VIN < UVDET
SLEEP
PWRON = 0 < 4.0 sec
and VIN > UVDET
(PWRON_CFG = 1)
PWRON = 0
any SWxOMODE bits = 1
and (PWRON_CFG = 0)
or
PWRON = 0 held ≥ 4.0 sec
any SWxOMODE bits = 1
and PWRONRSTEN = 1
(PWRON_CFG = 1)
PWRON = 1 and
VIN > UVDET
(PWRON_CFG = 0)
or
PWRON = 0 < 4.0 sec
and VIN > UVDET
(PWRON_CFG = 1)
PWRON = 0
all SWxOMODE bits = 0
(PWRON_CFG = 0)
or
PWRON = 0 held ≥ 4.0 sec
all SWxOMODE bits = 0
and PWRONRSTEN = 1
(PWRON_CFG = 1)
VIN < UVDET
ON
PWRON = 0
any SWxOMODE bits = 1
(PWRON_CFG = 0)
or
Thermal shutdown
PWRON = 0
all SWxOMODE bits = 0
(PWRON_CFG = 0)
or
PWRON = 0 held ≥ 4.0 sec
any SWxOMODE bits = 1
and PWRONRSTEN = 1
(PWRON_CFG = 1)
STANDBY de-asserted
STANDBY asserted
PWRON = 0 held ≥ 4.0 sec
all SWxOMODE bits = 0
and PWRONRSTEN = 1
(PWRON_CFG = 1)
Thermal shutdown
STANDBY
aaa-026475
Figure 7.ꢀState diagram
To complement the state diagram in Figure 7, a description of the states is provided in
following sections. Note that VIN must exceed the rising UVDET threshold to allow a
power up.
See Table 26 for the UVDET thresholds. Additionally, I2C control is not possible in the
coin cell mode and the interrupt signal, INTB, is only active in sleep, standby, and on
states.
10.4.1.1 On mode
The PF4210 enters the on mode after a turn on event. RESETBMCU is deasserted high
in this mode of operation.
10.4.1.2 Off mode
The PF4210 enters the off mode after a turn off event. A thermal shutdown event also
forces the PF4210 into the off mode.
Only VCOREDIG and VSNVS are powered in this mode of operation. To exit the off
mode, a valid turn on event is required. RESETBMCU is asserted low in this mode.
10.4.1.3 Standby mode
• Depending on STANDBY pin configuration, standby is entered when the STANDBY pin
is asserted. This is typically used for low-power mode of operation.
• When STANDBY is deasserted, standby mode is exited.
PF4210
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2018. All rights reserved.
Data sheet: technical data
Rev. 2.0 — 14 November 2018
26 / 137
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